半導体レーザー(LD)ドライバー、20 mA~4 A


  • Constant Current or Constant Power Driving of Laser Diodes
  • Extremely Low Noise
  • Compatible with all Laser Diode & Photodiode Polarities
  • Current Limit and Interlock for Laser Diode Protection

LDC205C

CAB400

LDC240C Front

Related Items


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特長

  • 極めて低ノイズ(LDC201CU 0.2 μA)
  • 5桁のLED表示
  • アナログ制御入出力
  • 信頼性の高い半導体レーザ保護機能
  • 半導体レーザとフォトダイオードの全極性に対応
  • 最大レーザ電流が20 mA~4 Aまでの7つのモデル
  • Certificate of Calibration(校正証明書)および検査報告書が付属
  • 1.5 mの接続ケーブル1本がコントローラ本体に付属

半導体レーザ用の電流コントローラLDC200Cシリーズの7つのモデルは、それぞれ異なる電流範囲に対応し、各製品は特定の用途に適切な性能を実現するように構成されています。各ユニットにはCertificate of Calibration(校正証明書)と検査報告書を同梱しています。製品情報の詳細については、「仕様」タブと「セレクションガイド」タブをご参照ください。

当社ではこちらのドライバを24か月毎に再校正することをお勧めしております。当社では再校正サービスを提供しております。詳細は当社までお問い合わせください。

動作モード

LDC200Cシリーズ半導体レーザーコントローラは、半導体レーザを定電流(CC)モードあるいは定光出力(CP)モードで駆動できます。フォトダイオード内蔵タイプの半導体レーザに対応しています。半導体レーザは、常にグラウンド接地を基準として駆動されます。フローティング接地型のコントローラと比較して、このグラウンド接地はノイズ、過渡抑止と安定性の面で優れています。

定電流モード
定電流(CC)モードでは、レーザへの電流は設定されたレベルに厳密に保たれます。このモードは、低いノイズと速い反応速度が必要とされる場合に使用されます。このモードを使う用途では、ほとんどの場合に温度安定化も要求されます。当社では、最大値12 WのTED200C最大値225 WのTED4015の2つの温度コントローラの製品をご提供しています。

定光出力モード
定光出力(CP)モードでは、ほとんどの半導体レーザーパッケージに内蔵されているフォトダイオードからの信号を利用してフィードバックすることによりレーザ出力を安定化します。CPモードでは、フォトダイオード電流のフルスケールの調整機能を利用することにより、個々の半導体レーザにおけるフォトダイオードの電流の違いを補償します。

コントローラの使用

直感的かつユーザーフレンドリな操作
選択された動作モードに関係なく、5桁のLED表示ではレーザ電流、フォトダイオードのモニタリング電流やレーザ電流の最大設定値を表示することができます。また光出力をmWの単位で表示することも可能です。光出力の計測値は、前面パネルのポテンショメータを調整することで、モニタ用フォトダイオードの感度に応じて校正できます。 多くの用途では、前述の利点によって、別個の光パワーメータは必要ありません。

背面パネルからの制御
ユニットの背面には、レーザ電流または電力(半導体レーザのパルス出力に使用可能)用の変調入力端子、レーザ電流に比例する出力端子、そしてリモート制御でレーザON/OFFするTTL入力端子があります。

保護機能

電流リミット値
レーザ電流が最大値を超えないよう、電流リミット値を精密に設定することができます。また操作を誤って最大電流設定を変えてしまうのを防ぐため、この機能へ簡単にアクセスできないように設計されています。あらかじめ設定された値を超えてレーザ駆動電流を増加させようとすると、表示と短い警告音が鳴ります。外部変調機能を使用する際にも電流リミット値を超えた電流供給はできません。

電流電源
電流電源とレーザの接続が遮断された場合、電流電源のスイッチは自動的にOFFになります。電流回路がオープンになると、LEDが「OPEN」と表示し、短い警告音が鳴ります。レーザ電流は、独立したレーザONキーによってONとOFFに切り替えます。スイッチがOFFになると、LDC200C内の電子スイッチが、半導体レーザを短絡させて確実に保護します。スイッチをONにするとソフトスタートによって過電圧することなくレーザ電流がゆっくりと増加します。外部電源に故障が生じてもレーザ電流は過渡電流を流すことはありません。AC電源からの過電圧は、内蔵の電気フィルタ、トランスの遮断機構により抑えられ、さらに筐体をしっかりアースすることによって効果的に抑制されます。

接続ケーブル

LDC200CシリーズLDコントローラを半導体レーザ用マウントに接続するためには、ケーブルCAB400が必要です。各コントローラ本体にはケーブルが1本付属しています(長さ1.5 m)。追加のケーブルもご用意しております(下記参照)。

Item #LDC200CVLDC201CULDC202CLDC205CLDC210CLDC220CLDC240C
Current Control (Constant Current Mode)
Control Range0 to ± 20 mA0 to ± 100 mA0 to ± 200 mA0 to ± 500 mA0 to ± 1 A0 to ± 2 A0 to ± 4 A
Compliance Voltage>6 V>5 V>10 V>10 V>10 V>4 V>5 V
Resolution1.0 µA10 µA10 µA10 µA100 µA100 µA100 µA
Accuracy±20 µA±50 µA±100 µA±0.5 mA±1.0 mA±2.0 mA±4.0 mA
Noise Without Ripplea<1.0 µA<0.2 µA<1.5 µA<3 µA<5 µA<15 µA<50 µA
Rippleb<0.5 µA<0.5 µA<1.5 µA< 2 µA<3 µA<5 µA<8 µA
Transients (typ.)<10 µA<10 µA<0.2 mA<0.5 mA<1 mA<2 mA<4 mA
Drift, 24hoursc<1 µA<2 µA<3 µA<10 µA<20 µA<100 µA<200 µA
Temperature Coefficient<50 ppm/°C
Current Limit
Setting Range0 to >20 mA0 to >100 mA0 to >200 mA0 to >500 mA0 to >1 A0 to >2 A0 to >4 A
Resolution1 µA10 µA10 µA10 µA100 µA100 µA100 µA
Accuracy±50 µA±200 µA±500 µA±1.5 mA±2.5 mA±5 mA±10 mA
Power Control (Constant Power Mode)
Photocurrent Control Range5 µA to 2 mA25 µA to 10 mA50 µA to 20 mA
Photocurrent Resolution0.1 µA1 µA1 µA
Photocurrent Accuracy±2 µA±10 µA±20 µA
Analog Modulation Input
Input Resistance10 kΩ
Small Signal 3dB Bandwidth,
CC Mode
DC to 100 kHzDC to 0.2 kHzDC to 250 kHzDC to 150 kHzDC to 100 kHzDC to 50 kHzDC to 30 kHz
Modulation Coefficient,
CC Mode
2 mA/V ± 5%10 mA/V ± 5%20 mA/V ± 5%50 mA/V ± 5%100 mA/V ± 5%200 mA/V ± 5%400 mA/V ± 5%
Modulation Coefficient, CP Mode0.2 mA/V ± 5%1 mA/V ± 5%2 mA/V ± 5%
Laser Current Monitor Output
Load Resistance>10 kΩ
Transmission Coefficient500 V/A ± 5%100 V/A ± 5%50 V/A ± 5%20 V/A ± 5%10 V/A ± 5%5 V/A ± 5%2.5 V/A ± 5%
General data
Safety FeaturesInterlock, Laser Current Limit, Soft Start, Short Circuit when Laser Off,
Open Circuit Detection, Over Temperature Protection
DisplayLED, 5 Digits
Connector for Laser, Photodiode,
Interlock & Laser On Signal
9-pin D-Sub Jack
Connectors for Control
Input / Output
BNC
Chassis Ground Connector4 mm Banana Jack
Line Voltage / Frequency100 V, 115 V, 230 V +15% –10% each / 50 to 60 Hz
Maximum Power Consumption20 VA20 VA25 VA30 VA40 VA60 VA100 VA
Mains Supply OvervoltageCategory II (Cat II)
Operating Temperature0 to 40 °C
Storage Temperature-40 to 70 °C
Relative HumidityMax. 80% Up to 31 °C, Decreasing to 50% at 40 °C
Pollution Degree (Indoor Use Only)2
Operation Altitude<2000 m
Warm-up Time for
Rated Accuracy
10 min
Weight<3.1 kg<3.3 kg
Dimensions (W X H X D)
without Operating Elements
146 x 66 x 290 mm³
Dimensions (W X H X D)
with Operating Elements
146 x 77 x 320 mm³
  • 10 Hz~10 MHz、rms、典型値
  • 50/60 Hz、rms、典型値
  • 0~10 Hz 典型値(@一定の室温)。

全ての技術データは、23 ± 5 °Cおよび45 ±15%、相対湿度で有効。

LDC前面パネル

CalloutConnectionCalloutConnection
15-Digit LED Display9Display Indicators
2Display Units10Up/Down Display Select
3Interlock Indicators11Diode Polarization Indicator
4Laser Status Indicator
5Laser Current On/Off Switch12Output Mode Indicator
6Display Adjustment Knob13Diode Polarization Select
7Supply Power Switch14Output Mode Select
8Current Limit and Power Calibration Pots15Photodiode Current Range Pot

LDC背面パネル

CalloutConnectionCalloutConnection
1TTL Input "LD REM" 0 to 5 V6Connector "LD OUT" for LD, PD, Interlock, & Status LED
2Modulation Input / Analog Control Input "MOD IN", -10 to +10 V7Serial Number of the Unit
3Analog Control Output "CTL OUT",
-10 to +10 V
8Indicator / Switch for Line Voltage (Included in Fuse Holder)
4Cooling Fan
54 mm Banana Jack for Chassis Ground9Power Connector and Fuse Holder
PinConnectionPinConnection
1Interlock and Status LASER ON/OFF6Not Connected
2Photodiode Cathode7Laser Diode Cathode (with Polarity Anode Grounded - AG)
3Laser Diode Ground8Laser Diode Anode (with Polarity Cathode Grounded - CG)
4Photodiode Anode
5Ground for Pin 19Not Connected

半導体レーザ接続

DB9 Female

 

半導体レーザーリモート端子*

BNC

*TTL入力 (0...+5 V)

変調入力端子**

BNC

* * アナログ制御入力(-10 V ...10V)

制御出力端子***

BNC

***アナログ制御出力(0 ...±10 V)

シャーシグラウンド端子

4 mm Banana Jack


Posted Comments:
Young Soo Yu  (posted 2023-12-20 18:04:54.86)
Hello, I'm using LDC205C to supply current to my laser diode(Eagleyard 671nm 15mW diode). But I'm seeing some phenomena that I don't understand. When I increase my current the diode seems to work well except for current range 50~60mA. (CC mode) The current fluctuates very large(20~30mA fluctuation). Do you have some technical suggestion about this? Thank you
hkarpenko  (posted 2023-12-20 07:01:06.0)
Dear customer, thank you for your feedback. In this case it would be necessary to check the laser diodes specifications, such as threshold current, max current, max voltage. Therefore I will contact you directly to discuss this issue in detail with you.
Maeno Yuto  (posted 2023-06-09 14:55:10.673)
If the current is increased to 850 mA with the laser output turned on, the internal lock will open at 850 mA.
wskopalik  (posted 2023-06-14 07:42:39.0)
Thank you very much for your feedback! It is possible that the compliance voltage of the LDC220C is exceeded at this current. The larger the current which is applied to a laser diode, the larger the voltage at the diode will be. The LDC220C has a compliance voltage of a little above 4 V. So it is possible that this voltage limit is exceeded at 850 mA. I will contact you directly so we can check the spec sheet of the diode to see if this could be the reason.
Rajesh D  (posted 2022-07-14 11:13:46.36)
Dear Thorlabs We recently purchased a LDC20C but while making the fuses we broke the plastic retainers (below the 3pole power connector, R10) while pressing the fuse holder. Now, I am not able to open the fuse holder (R10) so can you please let me know some solution for this, do Thorlab will replace for the LDC205C. Thank you Regards Rajesh
hkarpenko  (posted 2022-07-19 07:51:21.0)
Thank you very much for your feedback. I will reach out to you directly to discuss this further with you.
user  (posted 2022-04-08 23:24:15.467)
Hi, How can one measure phase noise and intensity noise of laser diodes from using LD driver LDC205C? How can one analyse noise characteristics of LDC205C? thanks.
soswald  (posted 2022-04-14 04:48:57.0)
Dear Customer, thank you for your feedback. I have reached out to you directly to discuss your application in more detail.
Rebecca Chen  (posted 2021-11-03 08:00:26.923)
Hello. I am using the controller LDC220C to drive a laser diode. I wonder if I can give an input of a square wave at 12 kHz (50% duty cycle) to the analog modulation input ? Thanks a lot !
wskopalik  (posted 2021-11-09 09:06:45.0)
Thank you very much for your inquiry! The analog modulation input of the LDC220C is specified with a small signal 3dB bandwidth of DC to 50 kHz. For a square wave a rule of thumb is to have at least a factor of 10 more bandwidth than the modulation frequency to keep a good square shape. So square waves with 12 kHz are probably a bit too much for the LDC220C. If you already have an LDC220C, you can however try to apply a 12 kHz signal. The edges of the square waves will not be perfect and a bit blurred but depending on the requirements it could still be good enough. I will also contact you to provide further assistance.
user  (posted 2021-02-24 20:30:05.52)
I am using LDC205C, but I cannot adjust the I_LIM (current limit). It is always 100 mA. Is there anything I should pay attention to? How can I adjust the current limit? Thanks a lot!
wskopalik  (posted 2021-02-25 04:30:05.0)
Thank you very much for your inquiry! The current limit can be adjusted using the potentiometer “LIM I” on the LDC205C. First, set the display to "ILIM" using the arrow buttons. It will then show the set current limit. Then use a screwdriver to set the desired current limit by turning the potentiometer "LIM I". It is the safest to switch the laser current off during the adjustment. I will also contact you directly to provide further assistance.
青青 何  (posted 2020-12-14 21:27:33.05)
您好,请问一下使用索雷博专用夹具LM14S2 TYPE1情况下(供电激光器型号索雷博SLD1005S ), MODE中LD POL如何选择
MKiess  (posted 2020-12-15 05:24:38.0)
Thank you very much for your inquiry. A member of the Chinese technical support team will contact you directly.
user  (posted 2020-10-01 18:36:04.053)
Hello, I am using the LD205C. Is there a way to measure the voltage applied to the LD when driving in current mode? (looks like there are voltage readout pins on CAB400, I'm wondering if these could be redirected to a voltmeter?)
MKiess  (posted 2020-10-02 08:16:16.0)
Hello, thank you very much for your inquiry. The LDC205C does not allow you to check the voltage via the 9-pin connector. The pins of the CAB400 are not connected on the LDC200 series. With the LDC4000 series controllers and the PRO8 laser diode current control modules you have the possibility to measure the laser voltage.
Johanna T  (posted 2020-06-09 04:33:44.67)
Hi, Is the LDC205C compatible with a LD with a floating anode (in a butterfly type 2 with bias T package)?
nreusch  (posted 2020-06-15 03:46:26.0)
Thank you for your inquiry. Yes, you can drive floating laser diodes with the drivers of our LDC series. As settings for the laser diode output configuration, you can either use AG or CG polarity. Please carefully check that the pin assignment of your diodes is compatible with the pins of the LDC driver that are shown in the Pin Diagram tab.
wenzel.jakob  (posted 2017-11-28 19:28:38.723)
Dear Thorlabs support, a minor question that wasn't clear to me from the documentation: do the LDC* controllers persist the current/regulation settings when they are powered off and turned on again at a later point? Or does the entire configuration have to be repeated each time? The same question also applies to your temperature controller TED200C. Thank you!
swick  (posted 2017-12-01 03:34:43.0)
This is a response from Sebastian at Thorlabs. Thank you very much for the inquiry. When nothing is changed at the control panel, the current limit, current set point and other settings will not vary when power cycling the LDC drivers. Same is valid for TED200C.
v.lychagov  (posted 2017-11-22 16:35:56.917)
Hi I'm using LDC205C w/ TCLDM9. I wonder if it is possible to connect directly to PD output of a laser diode? I want to record and process signal from photodiode rather then monitoring it's current with LDC.
mvonsivers  (posted 2017-11-27 09:19:18.0)
This is a response from Moritz at Thorlabs. Thank you for your inquiry. To monitor the PD signal externally you would need a custom cable which is connected to pins 2 and 4 of the "LD Driver" connector on the TCLDM9 mount. I will contact you directly for further details.
s.zhou  (posted 2017-08-16 12:06:09.48)
Hi Thorlabs, I am using a LDC202C current source in constant current mode, and find that the I_LD_SET changes over time. As I am using a function generator to control the current source, when I_LD_SET changes, the current output also changes. Could you explain me what is exactly the I_LD_SET and what will affect its value? I can't find much information about it on the manual. Thanks.
mvonsivers  (posted 2017-08-17 04:04:32.0)
This is a response from Moritz at Thorlabs: Thank you for your inquiry. When modulating the current with an external voltage source, I_LD_SET is an offset value that can be changed using the control knob. I will contact you directly for further details.
ltli  (posted 2017-08-14 13:03:35.617)
Hi, we have some problem on your LDC240C current source. The current source was in normal use (~1.3A, connected to an AG laser diode) but suddenly generated a buzzer sound and stopped working in the last week. The current source has no output current and the LED display shows "-----" when selecting ILD. However, the display of ILIM is normal. Can you give us some suggestion?
mvonsivers  (posted 2017-08-17 06:18:11.0)
This is a response from Moritz at Thorlabs: Thank you for your inquiry. It would be best to send in the unit to us for inspection. You will be contacted by us for further information.
artur.rackos  (posted 2017-05-12 11:15:17.12)
Dear Thorlabs, is your laser diode driver LDC205C compatible with laser ’PLT5 520_B1_2_3’ with built-in photodiode? How can I connect ’PLT5 520_B1_2_3’ with photodiode in reverse bias mode?
swick  (posted 2017-05-15 03:21:52.0)
This is a response from Sebastian at Thorlabs. Thank you for the inquiry. This Laserdiode is compatible to LDC205C and has Pin Style A (LD Anode and PD Cathode connected to Ground). If the Photodiode shall be operated with bias voltage, a battery can be connected in series to the Photodiode. You can find further information in the manual of LDC205C on page 12. I will contact you directly to provide assistance.
user  (posted 2017-03-29 22:39:34.45)
Would it be possible to have a strain relief version of the CAB400? I like the SR9 cables a lot, but changing the diode drive to one with TEC meaning I have to give them up. The CAB400 in comparison is too rigid.
swick  (posted 2017-03-31 03:06:09.0)
This is a response from Sebastian at Thorlabs. Thank you very much for the feedback. At the time we do not offer Strain Relief Cables for laserdiodes based on CAB400. We will internally discuss this idea.
user  (posted 2016-10-11 13:48:19.68)
Why is the current listed as ±? It doesn't make sense to me to be able to reverse the current. For one thing the LD won't function and can be damaged by reversing leads. In fact other LD drivers will switch off if you attempt to energize with reversed leads, which is a useful safety feature. Does this model have that feature?
swick  (posted 2016-10-13 03:28:48.0)
This is a response from Sebastian at Thorlabs. Thank you very much for your inquiry. The ± is referred to the feature Anode Grounded (AG) and Cathode Grounded (CG). While keeping the Compliance Voltage positive the Electrical Current has to be positive for CG and negative for AG. For LDC-Series if the laser diode was connected correctly but the polarity of the laser diode was selected wrong, an “OPEN” error will be indicated. After pressing "LASER ON" the LED "OPEN" extinguishes and the output can be switched on by pressing "LASER ON" again.
kedves  (posted 2015-12-12 11:24:02.757)
Dear Thorlabs, is your laser diode driver DC201CU compatible with your LED sources, e.g. LED631E? We need a very stable current driving for a LED and we have such a laser diode driver. I suppose we can use it, cannot we? Best regards
shallwig  (posted 2015-12-14 05:10:02.0)
This is a response from Stefan at Thorlabs. Thank you very much for your inquiry. The LDC201CU can deliver up to 100mA constant current at 5V compliance voltage. The LED631E can be driven up to 50mA (max rating) at typically 2.2V. You can find these information in the spec sheet of the Driver http://www.thorlabs.de/newgrouppage9.cfm?objectgroup_id=10&pn=LDC201CU and LED http://www.thorlabs.de/thorcat/16200/LED631E-SpecSheet.pdf You can use this driver in “constant current” mode to run the LED. There is no ready to use mount for these LEDs available, for correct connection please check the Pin assignment of CAB400 cable: http://www.thorlabs.de/newgrouppage9.cfm?objectgroup_id=10&pn=LDC201CU The Interlock Pin 1 and pin 5 must be connected externally by a short cut wire, by a circuit (total resistance <430 Ohm) : The current limit should be set at the ILim potentiometer to maximum 50mA. Please also take care of the soldering specifications which are mentioned in the LED spec sheet as well as correct pin assignment. I will contact you directly to check if there are any open questions.
faisal_ipa3  (posted 2015-04-17 16:49:18.22)
Hi, I am using Thorlabs LDC 205C and LM9LP. I would like to pulse signal on them. I am looking for external analog modulation for LDC 205C. Is that offered by Thorlabs? Thanks.
shallwig  (posted 2015-04-20 02:21:55.0)
This is a response from Stefan at Thorlabs. Thank you very much for your inquiry. Unfortunately we do not offer function generators so far. There are various options from other manufacturers, I will contact you directly to discuss your needs in detail.
prax.jean.sebastien  (posted 2015-03-02 15:40:30.787)
Dear Madam or Sir, I currently have an LDC210C and want to drive an FPL1009P laser diode on an LM14S2 mount. I would like the diode to deliver a pulse with a frequency of 10MHz. Can I achieve this with the external modulation input? Thank You.
tschalk  (posted 2015-03-04 09:28:59.0)
This is a response from Thomas at Thorlabs. Thank you very much for your inquiry. The bandwidth of the analog modulation input of the LDC210C is DC to 100kHz and a modulation of 10MHz is not possible. But the laser mount LM14S2 provides a RF modulation input (BIAS-T) for an external modulation up to 500MHz. You can find more detailed Information in the corresponding Manual at RF Modulation: http://www.thorlabs.de/thorcat/10600/LM14S2-Manual.pdf
ferrari  (posted 2013-10-22 17:24:50.883)
Dear Madam or Sir, I am using an LDC202 to drive a diode laser, and I would like to protect the diode when the controller is not connected or not working using a shorting Reed relay. This relay would be driven with the 10mA current available through the interlock pins 1 and 5 while the laser is "on". To do this I would need a voltage of the order of 5V between pin 1 and 5, but instead I found about 2.3V. Is there a possibility to increase this voltage to about 5V. Thank you, Gabriele Ferrari
tschalk  (posted 2013-10-24 06:13:00.0)
This is a response from Thomas at Thorlabs. Thank you very much for your inquiry. The interlock is not designed to be used as an external signal. Because of the internal logic circuit its not possible to provide the signal you would need for your application. I will contact you directly with more detailed information.
bdada  (posted 2012-05-17 15:38:00.0)
Response from Buki at Thorlabs: Thank you so much for your feedback and suggestion. We agree that it would be helpful to make the modulation bandwidth more visible, especially since these Laser Diode controllers look alike but have different modulation bandwidths. We will look into offering an immediate and long term solution. Thank you again for sharing your thoughts. Please contact TechSupport@thorlabs.com if you would like to discuss this further.
user  (posted 2012-05-16 17:20:10.0)
Please consider printing the modulation bandwidth on the back panel next to the control input, this would save some of us from wasting valuable time. I was using your LDC201CU and didn't realize the BW was just 0.2 KHz as i was familar with the LDC202 which has a 250 KHz BW, silly me i just assumed they would be the same.
jvigroux  (posted 2012-01-10 10:00:00.0)
A response from Julien at Thorlabs: thank you for your inquiry! Yes the LDC200C series can be used also in pulsed operation when using the external modulation input.
hautlutao  (posted 2012-01-10 15:54:47.0)
Dear Mr. or Mrs. Could the LDC laser diode driver driven laser diode operating in pulsed mode ?
jvigroux  (posted 2011-12-13 12:23:00.0)
A response from Julien at Thorlabs: Thank you for your feedback! We'll put the links to the required cables on this product page as well as on the product page of the TED200C.
rsavioli  (posted 2011-12-13 10:44:09.0)
Why don't you have any information pointing to the CAB400 and related interface cables on this page or any other LDC or TED pages, with the exception of the PRO8 stuff? I just spent 10 minutes looking for them and finally had to pull out a catalog.
bdada  (posted 2011-10-03 09:23:00.0)
Response from Buki at Thorlabs: Thank you for so much your feedback. Our design engineers will look into this issue and we will contact you to discuss what you can do to improve the feel or performance of the knob.
olsonaj  (posted 2011-10-02 10:30:21.0)
Have had this controller for a couple years. An issue I've had is the front current control knob is very loose, and makes it hard to tune the current precisely (esp. important for manually current-tuning the wavelength of a diode laser). Also, at times the knob seems "loose" and the current will jump around between different values. Perhaps this is a faulty connection? On future designs I recommend a sturdier current control knob.
bdada  (posted 2011-04-08 14:50:00.0)
Response from Buki at Thorlabs to Emmanuel: Thank you for your feedback, Emmanuel. We will contact you shortly to discuss your set up and verify the laser diode is connected properly to the driver.
emmanuel.vanbrackel  (posted 2011-04-08 09:01:22.0)
I have a big issue with this kind of driver. Up to now, I used a home-made driver that was built many years ago. Nevertheless, I needed a less noisy source, so I bought this. I tried to plug my laser diode (HL 6320G), following each documentation (of the diode, AG, following the pins correctly ; of the current controller, connecting the right pins to their right place, chose properly the polarity on the driver, set the limit for the current to 70 mA, put the knob to the left,...) : and when I push "laser on", when no current, its ok. But as soon as I get 0.1 mA, the open lights up, and no current anymore. I tried other cables configurations, verified that my diode works (with the old controller). Whats wrong ? Has anyone experienced that ? Bests
jhartmann  (posted 2009-08-13 12:52:30.0)
A response from Juergen at Thorlabs to joonggun.ha: This error message indicates a hardware failure. From experience it is known to us, that in 99% of such cases the reason for this failure is operation of the item at 230V AC while it was set to 100/115V AC. Of course, mains fuse blows, however during fuses reaction time damages to electronic circuitry may happen. After replacement of mains fuse and setting to correct AC, the unit switches on, but indicates only "Err.05", no operation is possible. The unit must be returned for repair to Thorlabs, this repair is NOT covered by warranty as the unit has been used inappropriate: We put an eyecatching yellow sticker accross the AC power connector on the rear panel, alerting the operator "Use correct voltage setting and fuse - see manual". So prior to apply AC voltage, this sticker must be removed. Please contact the Sales office, from where it has been purchased, for return instructions.
joonggun.ha  (posted 2009-08-12 22:21:52.0)
We have a litter LDC202C LD Controller. Today, one controller displyed an error message and did not work. The message is "Err.05". I recheck operation manual but could not find this error message. What is the problem? Please, answer ASAP.
juergen  (posted 2008-07-23 10:49:09.0)
Hi Ina, Thank you for your feedback. Manual and web specs are correct - LDC201CU is an ultra low noise driver. This is achieved by a low pass filter on the current output. Due this LPF, the max. modulation frequency in CC mode is 200Hz (-3dB, small signal) In VOL19, p.419, spec table, 200kHz is stated, which is wrong. We will correct that. Juergen Hartmann
ina.kinski  (posted 2008-07-18 01:50:28.0)
Hi, there is a typo both on this webpage and the operation manual that comes with this laser diode controller (p. 37): The small signal 3dB bandwidth (cc mode) goes up to 200kHz, not 200Hz. Thanks

半導体レーザーコントローラーセレクションガイド

下の表は、当社の半導体レーザ用コントローラおよびデュアル半導体レーザ/温度コントローラの主な仕様の一覧です。詳しい内容や仕様について、またはご注文の際には表内の型番をクリックしてご確認ください。

Current Controllers
Item #Drive CurrentCompliance VoltageConstant CurrentConstant PowerModulationPackage
LDC200CV20 mA6 VYes!Yes!ExternalBenchtop
VLDC00225 mA5 VYes!-Int/ExtOEM
LDC201CU100 mA5 VYes!Yes!ExternalBenchtop
LD2000R100 mA3.5 V-Yes!ExternalOEM
EK2000100 mA3.5 V-Yes!ExternalOEM
LDC202C200 mA10 VYes!Yes!ExternalBenchtop
KLD101230 mA≤10 VYes!Yes!ExternalK-Cube™
IP250-BV250 mA8 VaYes!Yes!ExternalOEM
LD1100250 mA6.5 Va-Yes!--OEM
LD1101250 mA6.5 Va-Yes!--OEM
EK1101250 mA6.5 Va-Yes!--OEM
EK1102250 mA6.5 Va-Yes!--OEM
LD1255R250 mA3.3 VYes!-ExternalOEM
LDC205C500 mA10 VYes!Yes!ExternalBenchtop
IP500500 mA3 VYes!Yes!ExternalOEM
LDC210C1 A10 VYes!Yes!ExternalBenchtop
LDC220C2 A4 VYes!Yes!ExternalBenchtop
LD3000R2.5 A--Yes!-ExternalOEM
LDC240C4 A5 VYes!Yes!ExternalBenchtop
LDC40055 A12 VYes!Yes!Int/ExtBenchtop
LDC402020 A11 VYes!Yes!Int/ExtBenchtop
  • 12 V電圧使用時
Dual Temperature and Current Controllers
Item #Drive CurrentCompliance VoltageTEC Power (Max)Constant CurrentConstant PowerModulationPackage
VITC00225 mA5 V> 2 WYes!-Int/ExtOEM
ITC102200 mA> 4 V12 WYes!Yes!ExtOEM
ITC1101 A> 4 V12 WYes!Yes!ExtOEM
ITC40011 A11 V> 96 WYes!Yes!Int/ExtBenchtop
CLD1010LPa1.0 A> 8 V> 14.1 WYes!Yes!ExtBenchtop
CLD1011LPb1.0 A> 8 V> 14.1 WYes!Yes!ExtBenchtop
CLD1015c1.5 A> 4 V> 14.1 WYes!Yes!ExtBenchtop
ITC4002QCLd2 A17 V> 225 WYes!Yes!Int/ExtBenchtop
ITC1333 A> 4 V18 WYes!Yes!ExtOEM
ITC40055 A12 V> 225 WYes!Yes!Int/ExtBenchtop
ITC4005QCLd5 A20 V> 225 WYes!Yes!Int/ExtBenchtop
ITC402020 A11 V> 225 WYes!Yes!Int/ExtBenchtop
  • 半導体レーザ用マウント付きコントローラ(ピンコードがA、D、E、Gのピグテール付きTO-Can型半導体レーザにのみ対応)
  • 半導体レーザ用マウント付きコントローラ(ピンコードがB、C、Hのピグテール付きTO-Can型半導体レーザにのみ対応)
  • 半導体レーザ用マウント付きコントローラ(バタフライ型半導体レーザにのみ対応) 
  • 量子カスケードレーザ(QCL)用に高く設定したコンプライアンス電圧

当社では製品組み込み用あるいはラックマウントの半導体レーザ電流&温度コントローラ(組み込み用モジュールPRO8電流コントロールモジュールPRO8電流&温度コントロールモジュール)もご用意しております。

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半導体レーザー(LD)ドライバー、20 mA~4 A

半導体レーザ電流コントローラLDC200Cシリーズ
半導体レーザ用の電流コントローラLDC200Cシリーズの7つのモデルは、それぞれ異なる電流範囲に対応し、各製品は特定の用途に適切な性能を実現するように構成されています。各ユニットにはCertificate of Calibration(校正証明書)と検査報告書を同梱しています。製品情報の詳細については、「仕様」タブと「セレクションガイド」タブをご参照ください。

+1 数量 資料 型番 - ユニバーサル規格 定価(税抜) 出荷予定日
LDC200CV Support Documentation
LDC200CVベンチトップ型LD電流コントローラ、±20 mA、ケーブル1本付属(長さ1.5 m)
¥174,852
Today
LDC201CU Support Documentation
LDC201CUベンチトップ型LD電流コントローラ、±100 mA、ケーブル1本付属(長さ1.5 m)
¥174,852
Today
LDC202C Support Documentation
LDC202Cベンチトップ型LD電流コントローラ、±200 mA HV、ケーブル1本付属(長さ1.5 m)
¥165,812
Today
LDC205C Support Documentation
LDC205Cベンチトップ型LD電流コントローラ、±500 mA HV、ケーブル1本付属(長さ1.5 m)
¥165,812
Today
LDC210C Support Documentation
LDC210Cベンチトップ型LD電流コントローラ、±1 A HV、ケーブル1本付属(長さ1.5 m)
¥174,852
Today
LDC220C Support Documentation
LDC220Cベンチトップ型LD電流コントローラ、±2 A、ケーブル1本付属(長さ1.5 m)
¥191,612
Today
LDC240C Support Documentation
LDC240Cベンチトップ型LD電流コントローラ、 ±4 A、ケーブル1本付属(長さ1.5 m)
¥208,373
Today
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CAB400シリーズ 接続ケーブル

CAB400 9 Pin Diagram
CAB400 (9 Pin Male) Cable
Pin #Description
1Interlock and Status LASER ON/OFF
2Photodiodea
3Laser Diode Ground
4Photodiodeb
5Ground for Pin 1
6Voltage Measurement Laser Diode Cathodec
7Laser Diode Cathode (with Polarity Anode Grounded - AG)
8Laser Diode Anode (with Polarity Cathode Grounded - CG)
9Voltage Measurement Laser Diode Anodec
  • LDC200Cシリーズ、フォトダイオードカソードPRO8シリーズ: フォトダイオード接地、カソードまたはアノード(設定可能)
  • LDC200Cシリーズ、フォトダイオードアノードPRO8シリーズ: フォトダイオード入力、カソードまたはアノード(設定可能
  • LDC200Cシリーズ: N.C.
+1 数量 資料 型番 - ユニバーサル規格 定価(税抜) 出荷予定日
CAB400 Support Documentation
CAB400半導体レーザ電流コントローラ用ケーブル、Dサブ9ピンコネクタ、1.5 m
¥11,311
Today
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Recalibration Service for LDC200C Series Laser Diode Drivers

Calibration Service Item # Compatible Drivers
CAL-LDC2 LDC200CV
LDC201CU
LDC202C
LDC205C
LDC210C
LDC220C
LDC240C

Thorlabs offers a recalibration service for our LDC200C Series Laser Diode Drivers. To ensure accurate measurements, we recommend recalibrating the devices every 24 months. The table to the right lists the drivers for which the CAL-LDC2 recalibration service is available.

Requesting a Calibration
Thorlabs provides two options for requesting a calibration:

  1. Complete the Returns Material Authorization (RMA) form. When completing the RMA form, please enter your name, contact information, the Part #, and the Serial # of the item being returned for calibration; in the Reason for Return field, select "I would like an item to be calibrated." All other fields are optional. Once the form has been submitted, a member of our RMA team will reach out to provide an RMA Number, return instructions, and to verify billing and payment information.
  2. Enter the Part # and Serial # of the item that requires recalibration below and then Add to Cart. A member of our RMA team will reach out to coordinate return of the item for calibration. Should you have other items in your cart, note that the calibration request will be split off from your order for RMA processing.

Please Note: To ensure your item being returned for calibration is routed appropriately once it arrives at our facility, please do not ship it prior to being provided an RMA Number and return instructions by a member of our team.

+1 数量 資料 型番 - ユニバーサル規格 定価(税抜) 出荷予定日
CAL-LDC2 Support Documentation
CAL-LDC2Recalibration Service for the LDC200C Series Laser Diode Drivers
Part Number:  Serial Number:
Request
Lead Time