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半導体レーザ用高安定、定電流ドライバ


  • Zener & Schottky Diode Protection
  • 250 mA and 2.5 A Versions
  • RoHS Compliant Drivers Available

LD3000R

LD1255R

Application Idea

LD1255R

Mounted on an LD1255P
(Power Supply Not Included)

Related Items


Please Wait
Item #LD1255RLD3000R
Operating Current0.2 to 250 mA0.02 to 2.5 A
Operating ModeConstant Current
Internal Current Control12 Turn Potentiometer (On Board)
External Current Control0 to 5 Volt Analog Input Voltage
Operating Voltage±8 to 12 Volts
Monitor Photodiode
Transimpedance Gain
1000 V/A

LD1255R(250 mA)は低ノイズかつ高い安定性を特長とする定電流モードの半導体レーザードライバです。LD3000Rは、LD1255Rの高出力(2.5 A)バージョンです。これらのレーザはLED駆動用に推奨しています。どちらのレーザ電流ドライバも、A、D、Eスタイルのピン配置に完全対応しています(下記参照)。

Pin Style A
Pin Style D
Pin Style E

注: LD1255RとLD3000Rのフォトダイオードのモニタ回路は、アイソレート型のフォトダイオードアノードにのみ対応しています(フォトダイオードのカソードがレーザーアノードに接続されています)。これらの製品はカソードコモンのレーザには対応していません。これらのレーザのフォトダイオードをLD1255RまたはLD3000Rに接続した場合、レーザが破壊されます。フォトダイオードアノードがドライバに接続されていなければ、 LD1255RとLD3000Rは、カソードコモンレーザのレーザ部分を問題なく駆動します。

Item #LD1255R
Operating Current0.2 to 250 mA
Operating ModeConstant Current
Internal Current Control12 Turn Potentiometer (On Board)
External Current Control0 to 5 V Analog Input Voltage
Output Current Drift 4.4 μA/°C (Typical)
Current Noise< 1 μARMS
Operating Voltage±8 to 12 V
Dimensions2.45" x 1.03" (62.2 mm x 25.4 mm)
LD ESD ProtectionForward Voltage: 160 ms Slow-Start Circuit, 3.3 V Zener Diode,
Reverse Voltage: Schottky Diode, LD DISABLE Pin
Signal Bandwidth1.2 kHz
Monitor Photodiode
Transimpedance Gain1000 V/A
Max LD Forward Voltage3.3 V
Operating Temperature10 to 30 °C
Storage Temperature-20 to 50 °C
Warm-up Time30 Minutes
Item #LD3000R
Operating Current0.02 to 2.5 A
Operating ModeConstant Current
Internal Current Control12 Turn Potentiometer (On Board)
External Current Control0 to 5 V Analog Input Voltage
Operating Voltage±8 to 12 V
Dimensions3.6" x 1.3" (91.4 mm x 33.0 mm)
Monitor Photodiode
Transimpedance Gain1000 V/A
Operating Temperature10 to 30 °C
Storage Temperature-20 to 50 °C
Warm-up Time30 Minutes

LD1255R平面図

LD1255 Top View

LD3000R平面図

LD3000 Top View

LD1255Rのピン配列

PinFunction
J1-1+V (+8 to +12 VDC, 10 mA)
J1-2Common
J1-3-V (-8 to -12 VDC, 0.3A) Provides Power to Laser
J1-4External Current Control (0 to +5 V)
J1-5Disable
J1-6Laser Diode Anode
J1-7Laser Diode Cathode
J1-8Monitor Photo Diode Anode (From Laser)a
J1-9Photodiode Monitor Output (-1 V/mA)
J1-10Laser Current Monitor Output (10 mV/mA)
  • LD1255Rのフォトダイオードモニタ回路は、アノードが電気的に分離されているフォトダイオードを持つレーザにのみ対応しています。 CQL7825/DおよびCQL7840/Dなどの一般的なカソードレーザには対応しておりません。 

LD3000Rのピン配列 

PinFunction
J1-1+V (+5 to +12 VDC, 50 mA)
J1-2Ground
J1-3-V (-8 to -12 VDC, 2.5A) Provides Power to Laser
J1-4External Current Control (0 to +5 V)
J1-5No Contact (Polarization Key)
J1-6Laser Diode Anode (Internally Connected to Pin 2 Ground)
J1-7Laser Diode Cathode
J1-8Monitor Photo Diode Anode (From Laser)a
J1-9Photodiode Monitor Output (-1 V/mA)
J1-10Laser Current Monitor Output (1 V/A)
  • LD3000Rのフォトダイオードモニタ回路は、 フォトダイオードのアノードが電気的に分離されている(フォトダイオードのカソードがレーザのアノードに接続している)レーザにのみ対応しています。 一般的なカソードレーザにはお使いいただけません。 これらのレーザのフォトダイオードをLD3000Rに接続するとレーザは破壊されます。 フォトダイオードのアノードがLD3000Rに接続されない限り、このドライバは一般的なカソードレーザを問題なく駆動させます。 
J2 Pins to JumperOperating Mode
1 to 2Mode 1. COMMON Referenced
External Current Control
2 to 3Mode 2. Disable External Current Control
J2 Pins to JumperOperating Mode
2 to 3Mode 1. COMMON Referenced
External Current Control
4 to 5Mode 2. Disable External Current Control

重要: J2に取り付けられているジャンパがない状態でLD3000Rを起動させないでください。 レーザがオーバードライブを起こし、致命的な損傷を受ける可能性があります。 

Remaining J2 PinsFunction
1No Connection (Leave this Pin Floating)
5-V (May also be used for Monitoring Signals)
LD3000R SmartPack Packaging
Click to Enlarge

LD3000R Packaging

Smart Pack

Item #% Weight
Reduction
CO2-Equivalent
Reductiona
LD3000R 15.26% 1.32 kg

Smart Pack

  • Reduce Weight of Packaging Materials
  • Increase Usage of Recyclable Packing Materials
  • Improve Packing Integrity
  • Decrease Shipping Costs

Thorlabs' Smart Pack Initiative is aimed at waste minimization while still maintaining adequate protection for our products. By eliminating any unnecessary packaging, implementing packaging design changes, and utilizing eco-friendly packaging materials for our customers when possible, this initiative seeks to improve the environmental impact of our product packaging. Products listed above are now shipped in re-engineered packaging that minimizes the weight and the use of non-recyclable materials.b As we move through our product line, we will indicate re-engineered packages with our Smart Pack logo.

  • Travel-based emissions reduction calculations are estimated based on the total weight reduction of packaging materials used for all of 2013’s product sales, traveling 1,000 miles on an airplane, to provide general understanding of the impact of packaging material reduction. Calculations were made using the EPA’s shipping emissions values for different modes of transport.
  • Some Smart Pack products may show a negative weight reduction percentage as the substitution of greener packaging materials, such as the Greenwrap, at times slightly increases the weight of the product packaging.

Posted Comments:
Ludo Angot  (posted 2020-08-19 00:49:32.627)
I have a couple of additional questions, this time regarding specifically the LD3000R. 1) is there a disable pin and function as on the LD1255R? If so how to use it? And if not, what is the function of pin 5 on J1 (it's not documented in the user manual)? 2) I've noticed negative transient currents down to -100mA when shutting off the power supply to the LD3000R (using your EC5PS P.S. module) and up to 90mA when interrupting the current on the +/-12V pins on the LD3000R itself, these could damage the L.D. How do you recommend to switch off the driver in order to avoid the transient currents? 3) finally: if my L.D. doesn't include a photodiode or if it does but I don't need it, can the LD3000R be operated with only the negative 12V applied? Or asked in another way, what are the low-power amplifiers (those requiring the +12V bias) used for?
Ludovic Angot  (posted 2020-08-14 04:47:41.6)
What problem may I face when driving a G pin code LD with either one of these drivers? I've just tried with the LD1255R and it seems to work just fine. Also, on the user manual of the LD1255R, does the figure 2 (Disable Circuit Schematic) refer to the actual internal circuit of the driver or is it a suggestion for an external customer made disable circuit?
asundararaj  (posted 2020-08-26 04:18:09.0)
Thank you for contacting Thorlabs. The LD1255R can operate any laser diode as long as it can be wired correctly. It uses a floating power supply when the case is held at a potential other than GND. It does not require the PD for operation since it is a constant current controller without a power feedback loop. There is a PD monitor but it is not required for operation.
lmarin  (posted 2015-09-28 14:20:47.867)
IS CONFUSING Laser Current Monitor: The laser drive current can be monitored from pin 10 of J1. This output is referenced to the negative supply (J1 Pin 3 or J2 Pin 4) and has the following transfer function: VPIN10 = -V + ILD * 10 Hint: Using a DVM, the laser current can be read without having to compensate for the -V offset by attaching the (-) lead to J2 Pin 4 and the (+) lead to J1 Pin 10.
jlow  (posted 2015-10-01 04:47:39.0)
Response from Jeremy at Thorlabs: The test point outputs are voltage outputs. Using a voltmeter, a simple to read the output current is to connect the (+) lead to J1 Pin 10 and the (-) lead to J2 Pin 4 and measure the voltage between those two pins. The conversion is 10mV/mA.
lmarin  (posted 2015-09-28 13:23:44.05)
I am measuring LED current via pin 10 and pin 4 with DVM, what formula I need to use. Is a direct reading volts to amperes??
user  (posted 2014-12-08 15:31:19.617)
There is a typo in the autocad drawing of the LD1255R. It says "all header posts 0.25" square" but that should probably be 0.025" instead.
myanakas  (posted 2014-12-08 05:12:32.0)
Response from Mike at Thorlabs: Thank you for your feedback. You are correct, the dimension should be 0.025" square. We are currently working on updating the support drawing.
iain  (posted 2013-11-01 05:51:17.01)
Can the LD1255R be battery-operated? For example, with a pair of lead-acid batteries.
cdaly  (posted 2013-11-07 03:10:11.0)
Response from Chris at Thorlabs: As long as you hook up a voltage supply to the J1 connector such that pin 1 is 8-12 volts higher in potential than the pin 2 ground and pin 3 is 8-12 volts lower in potential than the pin 2 ground, it does not really matter what the voltage supply is. As long as it can provide a minmimum of 10mA at these voltages, batteries would be fine.
jlow  (posted 2012-10-10 16:51:00.0)
Response from Jeremy at Thorlabs: The LD3000 does not support the TTL feature you mentioned. For a similar OEM driver with at least 2.5A output, maybe the ITC133 (http://www.thorlabs.com/NewGroupPage9.cfm?objectgroup_id=984) might be of more interest to you. I will get in contact with you to discuss about your application.
ntrail  (posted 2012-10-06 10:33:47.0)
Hello- Following up on the last comment about TTL, I read the instrution manual but am after a bit more clarification. I would like to have the internal pentiometer to set the current output, and then use the external 0-5V source to turn that current "on" to "off", or pulse it. Will the LD3000 support that type of functionality? I ask this, as it mentions the current can be controlled by the external voltage, but I didn't want the exact voltage to set the current, just to turn it on / off. Thank you.
jlow  (posted 2012-10-04 09:12:00.0)
Response from Jeremy at Thorlabs: The current output can be externally controlled by a voltage source applied to J1 pin 4. For example, you could use a DAQ card output (0 to +5V) to do that. Please refer to page 3 of the manual (http://www.thorlabs.com/Thorcat/16500/LD3000R-SpecSheet.pdf) for full details on this feature. Your voltage source would have to be triggered by your camera.
sebastien.avila  (posted 2012-10-04 05:53:00.0)
Hello, How can we pulse the current of the LD3000R? We want to trigger the laser diode synchronous to a camera @ 100fps (100µs to 3ms pulse time). Is there a TTL "enable" input? Thank you very much.
tcohen  (posted 2012-05-10 13:03:00.0)
Response from Tim at Thorlabs: Thank you for your feedback! The LD1255R can be used with common cathode diodes as long as the photodiode is not connected. This may work if you are interested in using constant current mode. We also offer the IP250-BV that accommodates common cathode pin-outs and is capable of utilizing the photodiode for both constant current and constant power mode. The IP250-BV also supports analog modulation.
amiller  (posted 2012-05-09 13:32:15.0)
Hi, It would be useful to have a version of the controllers, e.g. the LD1225 for grounded cathode laser diodes. Many antimonide diodes have the polarity reversed, making the use of the existing LD1255 challenging for these devices. A separate current modulation input would also be a nice feature. Thanks.
bdada  (posted 2012-02-24 18:37:00.0)
Response from Buki at Thorlabs to przeszla: LD1255 should have sufficiently low current noise to be considered suitable for a DFB laser diode. However, you have to to be very careful to use the instructions in the manual, as it is not difficult to damage the LD if something is overlooked. For expensive laser diodes we recommend using a more turnkey current controller like the LDC201CU. We have contacted you to provide more information.
przeszla  (posted 2011-10-28 08:27:47.0)
Can I use the LD1255 to drive a DFB-Laser (distributed feedback laser) with a specified linewidth < 2MHz? Another manufactor of diode drivers offers an expensive driver with a similar noise and ripple of 2µA, but you have to use another electrical low-noise filter in order to drive the diode.
leichner  (posted 2009-10-19 11:05:56.0)
A response from Lou at Thorlabs to tom.hawkins: There is nothing you can do to add additional voltage. The 3.3V is actually the compliance voltage that the driver is regulated to be able to handle. The actual forward voltage is developed by the device, your LED. If the LED develops a higher forward voltage then you need a different driver. A recommend driver would be the IP250-BV which has a compliance voltage to 8VDC. http://www.thorlabs.com/NewGroupPage9.cfm?ObjectGroup_ID=1363&pn=IP250-BV&CFID=6061011&CFTOKEN=5737989 The LED may work with the LD1255R but the output will be significantly lower. (LEDs are much more forgiving then laser diodes)
tom.hawkins  (posted 2009-10-19 08:17:49.0)
I understand that this product can be used to drive LEDs as well as laser diodes, but what if the forward voltage of the LED is more than 3.3 V? Is there something I could do with an external voltage reference or negative supply rail to extend the drive voltage range?

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。

半導体レーザ用高安定・定電流ドライバ、組み込み用: 250 mA、3.3 V

  • レーザ用ディスエイブルピン
  • レーザ保護のためのスロースタート回路
  • LD1255Pを使って光学テーブルまたはブレッドボードに取付け
  • サイズ: 62.2 x 25.4 mm
  • RoHS準拠
  • 低い電流ノイズ (<1 μARMS)
  • 低温度ドリフト
  • 基板上に12回転電流調整用ボリューム
  • レーザ電流制御用外部入力
  • レーザ電流およびフォトダイオード電流用モニタ出力

LD1255Rは、低ノイズ、高安定、定電流半導体レーザードライバです。駆動電流は250 mAで、ピン配列A、D、Eのレーザに対応しています。外部共振器型波長可変レーザで駆動するような要求の厳しい半導体レーザ用途でもご使用いただけます。この第2世代の半導体レーザードライバは、基板上にツェナーダイオードおよびショットキーダイオード保護回路とディスエイブルピンが搭載されています。オペアンプと電圧参照の設計により、より正確なレーザ電流制御が可能です。LD1255Rは、ポスト取付け用M4タップ穴付きの取付けプレートLD1255Pによって、ブレッドボードや光学テーブルに固定できます。

+1 数量 資料 型番 - ユニバーサル規格 定価(税抜) 出荷予定日
LD1255R Support Documentation
LD1255R250mA 定電流LDドライバ、RoHS準拠
¥21,382
3-5 Days
LD1255P Support Documentation
LD1255PLD1255R用光学テーブルマウントプレート
¥3,475
Today

半導体レーザ用高安定・定電流ドライバ、組み込み用: 2.5 A、7.7 V

  • 低ノイズの2.5 A駆動電流
  • レーザ保護のためのスロースタート回路
  • RoHS準拠モデルをご用意
  • 1.0 Aで12 µARMSの低ノイズ
  • 基板上に12回転電流調整用ボリューム
  • 電流制御用外部入力
  • レーザ電流とフォトダイオード電流用モニタ出力

LD3000Rは、上記の高安定、低ノイズ半導体レーザードライバ LD1255Rの高出力バージョンです。高電流用部品が使われており、2.5 Aの電流が供給できます。また、ピン配列A、D、Eに対応しています。アルミニウム製の筺体がヒートシンクの役割を果たし、比較的小型で高安定な半導体レーザードライバとなっています。 このデバイスは、LED と半導体レーザのいずれも駆動できます。

+1 数量 資料 型番 - ユニバーサル規格 定価(税抜) 出荷予定日
LD3000R Support Documentation
LD3000R2.5A 安定型定電流LDドライバ、RoHS準拠
¥23,071
Today

ドライバLD1255R用電源とケーブル

LD3000R SmartPack Packaging
Click to Enlarge

付属ケーブルのピン配列
Pin #Assignment
1+12 V
2GND
3-12 V
  • ドライバLD1255R用の電源(型番LDS12B)とケーブル
  • 付属の3ピンケーブルはドライバとの接続用
  • 出力:±12 VDC
  • AC入力電圧は切り替え可能(100/120/230 V)

LD1255用電源セットには、電源LDS12Bと、半導体レーザ用ドライバLD1255R(上記参照)に接続するためのケーブルが含まれています。電源筐体のスイッチによりAC入力電圧を100 V、120 Vまたは230 Vから選択できます。付属のケーブルを用いて、電源から半導体レーザ用ドライバLD1255Rに±12 VDCを供給することができます。このケーブルは半導体レーザ用ドライバLD3000Rには対応していません。付属のケーブルは単体でのご注文も可能ですので、その際は当社までご連絡ください。

+1 数量 資料 型番 - ユニバーサル規格 定価(税抜) 出荷予定日
LD1255-SUPPLY Support Documentation
LD1255-SUPPLY電源LDS12Bとケーブルのセット、ドライバLD1255R用
¥16,112
3-5 Days
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