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- Corrects Dispersion Caused by Optical Elements
- Low AOI Allows Multiple Reflections Between Mirrors
- R > 99% for Either 650 - 1050 nm or 700 - 1000 nm
DCMP175
53.0 mm x 12.0 mm, Designed for Multiphoton Microscopy
UMC10-15FS
Ø1", Compensates for
1.5 mm of Fused Silica
UMC05-15FS
Ø1/2", Compensates for
1.5 mm of Fused Silica
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2つのミラーマウントPOLARIS-C1Gにそれぞれ分散補償ミラーUMC10-15FSを取り付けたセットアップの光路(例)。ミラーの＞99.5%の反射率と、10°の小さな入射角が多重反射をサポートしています。
特長
- 分散補償用に設計されたチャープミラー
- UMCx-15FS:1回の反射で溶融石英の1.5 mmの群遅延(GD)を補償
- DCMP175:多光子顕微鏡における長い光路長での大きな群遅延を補償
- 高い反射率と小さな入射角で多重反射が可能(右の図をご覧ください)
- 溶融石英基板
当社の分散補償ミラーは、超短パルスが光学系を伝搬するときに発生するパルスの広がりを補正します。当社では、分散制御ツール(例：前置補償)として、2種類のチャープミラーをご用意しております。1つは円形ミラーで、これは超短パルスレーザ用光学素子としてもっとも一般的な溶融石英基板を透過する際に生じる分散を補償します。 もう1つは多光子顕微鏡に使用される長い光路長と光学基板用に設計された長方形ミラーです。
フェムト秒レーザーパルスは多くの異なる波長から構成されているため、パルスがガラスのような誘電体を透過するときにそのパルス幅(時間的な強度プロファイル)が広がります。この広がりの原因は、光が透過する光学素子が持つ屈折率の波長依存性にあります。典型的なガラスでは短波長の方が長波長よりも屈折率が大きいため、短波長の伝搬は遅くなります。こちらのミラーは、長波長の方が短波長よりも大きい群遅延を生じ、短波長が長波長に「追いつく」ように設計されています。
ミラーの表面は、イオンビームスパッタ(IBS)を使用してコーティングされています。この再現性と制御性の高い手法により、高い損傷閾値と耐久性のある薄膜コーティングが実現しています。
超短パルス光学系用の光学素子のラインナップについては、「超短パルス用光学素子」のタブをご覧ください。
| Specifications | |||
|---|---|---|---|
| Item # | UMC05-15FS | UMC10-15FS | DCMP175 |
| Wavelength Range | 650 - 1050 nm | 700 - 1000 nm | |
| Reflectance over Wavelength Rangea | Rabs > 99.5% over Wavelength Range | Ravg > 99% over Wavelength Range | |
| Group Delay Dispersion (GDD) per Reflection | -54 fs2 at 800 nm | -175 fs2 at 800 nm | |
| Size | Ø1/2" | Ø1" | 53.0 mm x 12.0 mm (2.09" x 0.47") |
| Diameter Tolerance | +0.00 / -0.10 mm | N/A | |
| Thickness | 6.35 mm (0.25") | 9.5 mm (0.37") | 12.0 mm (2.09") |
| Thickness Tolerance | ±0.10 mm | ±0.20 mm | - |
| Clear Aperture | > 80% of Diameter | At Least 8 mm x 50 mm | |
| Angle of Incidence (AOI) | 10° | 8° | |
| Surface Flatnessb | λ/4 at 632.8 nm Over Clear Aperture | λ/10 Over Any Ø8 mm in the Clear Aperture | |
| Surface Quality | 15-5 Scratch-Dig | 10-5 Scratch-Dig | |
| Back Surface | Polished | - | |
| Laser-Induced Damage Threshold | 0.07 J/cm2 (800 nm, 43.2 fs FWHM, S-Pol, 10 000 Pulses)c | 0.10 J/cm2 (800 nm, 100 fs) | |
| Substrate | Fused Silica | ||
| Parallelism | ≤3 arcmin | - | |
下のプロット図は、こちらのミラーの反射率と群遅延(GD)の理論計算値で、設計性能を示しています。実際の性能は「仕様」タブ内の仕様の範囲内でロット毎にバラつきがあります。青い網掛け部分はミラーの仕様の波長範囲を示しています。
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超短パルスレーザ用光学素子のレーザ損傷閾値(LIDT)の値は、所定のパルス数で、視覚的に確認できる損傷を与える(パルスあたりの)流束量で定義されています。ここでのLIDT値は、800 nmにおける43.2 fsのFWHMパルス(S偏光)で測定されました。LIDTの値は、超短パルス領域では保証されておりません。このデータは、お客様に向けた目安として掲載しています。
| Posted Comments: | |
Lukasz Piatkowski
(posted 2023-10-09 10:27:14.27) Hi,
I'm looking for dispersion compensating optics to deal with dispersion in the range 600-700 nm in the laser pulses coming from a white light laser source (NKT Fianium). What is the reflectivity/dipsersion compensation characteristic of your DCMP175 in the mentioned range?
With best wishes,
Lukasz cdolbashian
(posted 2023-10-20 10:37:27.0) Thank you for reaching out to us with this inquiry. Unfortunately, these mirrors are not meant to be used <650nm as this is outside the design wavelength range. The in-range performance can be found in the "graphs" tab above. In the case you do decide to use them within this range, you will likely experience inconsistent performance from unit to unit, due to the above design consideration. XinWei Yi
(posted 2023-04-01 16:00:55.72) I want to know the group delay dispersion (GDD) curve of UMC10-15FS at zero Angle of incident. cdolbashian
(posted 2023-04-26 10:01:00.0) Thank you for reaching out to us with this inquiry. Unfortunately we do not have such data to share. we would estimate a redshift of about 2% with respect to the values we have posted for the 10° AOI. Cheng Zong
(posted 2022-03-18 13:30:38.39) Hi, I find the DCMP175 surface is dusty. How to clean it? Can I use methanol or acetone to clean it? ksosnowski
(posted 2022-03-22 05:33:05.0) Hello Cheng, thanks for reaching out to Thorlabs. We recommend light dusting with clean, dry air first to remove the largest particles. If solvent is needed to wipe the surface, you can use acetone, methanol, or isopropanol to clean this as the chirped mirror pair is not cemented. We offer lens wipes MC-5 and cleaning accessories to aid in this as well. It may be slightly easier to avoid streaks with isopropanol, as it dries slightly slower allowing a slower, more even wiping motion. Hendrik Wrigge
(posted 2021-12-08 08:31:59.49) Using the UMC10-15FS mirrors, I noticed a slight ellipticity in polarisation after my mirror compressor. The initial beam bevore the mirrors is strictly linear polarized.
Inside the compressor, I use 16 reflections on the UMC10-15FS.
Is this a standart behavior of your mirror or do you have any coment on this?
Thank you in advance cdolbashian
(posted 2021-12-22 04:29:22.0) Thank you for contacting us here at Thorlabs. We have not characterized the reflection-induced-polarization states for these mirrors. Theoretically though, if your polarization state was not completely within, or orthogonal to, the incident plane, you may see a slight ellipticity in your reflected beam, especially after 16 bounces. Based on our discussion it seemed that there was a bit of misalignment between the incident plane and the direction of linear polarization (~.5deg). Correcting this error solved the problem which you were seeing. Thank you again for reaching out to us and allowing me to help you work through this problem. Audrius z
(posted 2020-09-30 08:28:56.68) Hello, could please send me the GDD curve for these chirped mirrors?
Best YLohia
(posted 2020-10-01 03:57:11.0) Hello, thank you for contacting Thorlabs. Which specific mirror are you referring to? One can calculate this from the raw group delay data (found on the Graphs tab) by taking the derivative. I have reached out to you directly to discuss this further. Ondrej Novak
(posted 2019-10-11 17:48:54.953) Dear colleagues, could you please provide us with a graph of DCMP175 GDD compensation performance over different wavelength? Such curve would be extremely helpful. I am especially interested in wavelengths from 920nm to 1040nm. How much fs2 can be compensate per single bounce? Thank you.
Ondrej YLohia
(posted 2019-10-22 10:12:15.0) Hello Ondrej, thank you for contacting Thorlabs. The GDD for the DCMP175 is nominally -175 fs^2 at 800 nm but it changes a little with wavelength and has fairly large oscillations. I have reached out to you directly with some GDD data that we have up to 1000 nm. The oscillations become very large outside the design range. That's typical for all dielectric coatings, not just these chirped mirrors. We do not recommend using these at >1000 nm. yuezhu
(posted 2017-12-18 12:46:27.343) Can I use chirped mirrors in optical coherence tomography system?
How about https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=3242 ?
Which one is better? tfrisch
(posted 2018-03-22 12:16:19.0) Hello, thank you for contacting Thorlabs. Chirped mirrors and dispersion compensating prisms are both used to adjust for chromatic dispersion. Which one is better suited for your application will depend on how you intend to use these. I will contact you directly about your application. dtorchin
(posted 2017-12-06 18:32:00.957) Individual chirped mirrors have GD oscillations as a function of wavelength. Is DCMP175 sold as a pair whose oscillations cancel? llamb
(posted 2018-03-01 08:12:47.0) Hello, thank you for contacting Thorlabs. DCMP175 is indeed sold as a pair of mirrors. The oscillations will not cancel, but each reflection will add to the Group Delay Dispersion. The mirrors can be adjusted to increase/decrease the number of reflections, thus increasing/decreasing the GDD as needed for the application. pedro.oliveira
(posted 2017-10-24 18:52:36.55) Dear Sir/Madam,
I would like to have the data for the reflectance and the GD for DCMP175?
Many thanks,
Pedro Oliveira tfrisch
(posted 2017-10-30 01:55:22.0) Hello, thank you for contacting Thorlabs. We will reach out to you directly with theoretical data in tabular form that can be used for your calculations. t.wills
(posted 2017-01-27 05:41:00.78) Dear Thorlabs,
Do you have a number available for the GDD per reflection at 940nm? This would be the wavelength I need to use.
I am confused by the graph showing 'GD' versus wavelength - 'GD' appears to go positive at wavelengths >850nm, which means the mirror wouldn't work for pre-compensation (but I suspect I haven't understood the graph).
Many thanks,
Tom tfrisch
(posted 2017-02-17 02:34:05.0) Hello, thank you for contacting Thorlabs. GD and GDD are related by a derivative. I will contact you directly with more details, but the zero of GD is chosen only as a reference. user
(posted 2013-08-23 10:41:42.49) Is there a recommended maximum distance between the mirrors, a maximum incidence angle or a maximum number of reflexions to consider? Is there an app note or recommendations on using these? Thank you. jlow
(posted 2013-08-29 13:18:00.0) Response from Jeremy at Thorlabs: The recommended maximum angle of incidence (AOI) is about 7°. The correct mirror distance depends on the number of bounces needed. Depending on the wavelength of the laser used, the tolerable AOI can be different as well. We have some plots (for s- and p-polarization) showing the evolution of the calculated GDD in the specified wavelength range as a function of AOI. As a general rule of thumb, the maximum AOI is smaller if the laser wavelength is longer. For example, around 20° AOI might be useable for 750-800nm light but around 10° AOI might be useable for 900-950nm light. However, it should be noted that the performance is not guaranteed for large AOIs. Since you did not leave your e-mail address, can you contact techsupport@thorlabs.com please? We can discuss about this further via e-mail. tcohen
(posted 2012-05-16 13:45:00.0) Response from Tim at Thorlabs: Thank you for contacting us Jan Metje! Our baseline LIDT for the DCMP is 0.1J/cm^2 for 100fs pulses at 100Hz. Please note that for shorter pulses and higher repetition rates the damage threshold will be smaller. jan.metje
(posted 2012-05-15 07:57:14.0) Dear Sir or Madam,
do you know the damage threshold of this dispersion comensating mirror set?
Kind regards,
Jan Metje bdada
(posted 2011-10-12 19:22:00.0) Response from Buki at Thorlabs:
The DCMP175 Dispersion-Compensating Mirrors can be mounted in the KM100C Kinematic Cylindrical Lens Mount. The mount accepts any cylindrical or rectangular optic up to 65 mm tall.
The mount can be attached to any of Thorlabs' Ø1/2" TR Series posts, which feature an #8-32 (M4) tapped hole. Alternatively, the KM100C mount can also be attached to an RS1.5P Ø1" Pedestal Pillar Post, which has a height of 1.5", and can be secured to the breadboard using a CF125 Clamping Fork.
Alternatively, these mirrors can be mounted in the Kinematic Grating Mount Adapter,KGM20, KGM40, or KGM60 which is compatible with Ø1", front-loading, unthreaded mirror mounts.
Please contact TechSupport@thorlabs.com if you have further questions. zacarias.garcia
(posted 2011-10-12 08:52:58.0) Could you please tell us how and where to install these mirrors ? |
フェムト秒パルスレーザ用ならびにピコ秒レーザ用光学素子を幅広くご用意しています。詳細は下表をご参照ください。
| Dielectric Mirror | High-Power Mirrors for Picosecond Lasers | Metallic Mirrors | Low-GDD Pump-Through Mirrors | ||
|---|---|---|---|---|---|
 |  |  |  |  |  |
| Dual-Band Dielectric Mirror, 400 nm and 800 nm | Ytterbium Laser Line Mirrors, 250 nm - 1080 nm | Ultrafast-Enhanced Silver Mirrors, 750 - 1000 nm | Protected Silver Mirrors, 450 nm - 20 µm | Unprotected Gold Mirrors, 800 nm - 20 µm | Pump-Through Mirrors, 1030 - 1080 nm and 940 - 980 nm |
| Deterministic GDD Beamsplitters | Low-GDD Harmonic Beamsplitters | Low-GDD Polarizing Beamsplitters | β-BBO Crystals | Dispersion-Compensating Optics | |
|---|---|---|---|---|---|
 |  |  |  |  |  |
| Beamsplitters & Windows, 600 - 1500 nm or 1000 - 2000 nm | Harmonic Beamsplitters, 400 nm and 800 nm or 500 nm and 1000 nm | High-Power, Broadband, High Extinction Ratio Polarizers, 700 - 1300 nm | β-BBO Crystals for Second Harmonic Generation | Dispersion-Compensating Mirrors, 650 - 1050 nm | Dispersion-Compensating Prisms, 700 - 900 nm |
ズーム- 反射率:＞99.5%(650～1050 nm)
- 1回の反射当たりの群遅延分散(GDD):溶融石英の-1.5 mm(-54 fs2 @800 nm)
- 開口：＞直径の80%
- 入射角10°
当社のチャープミラーUMC05-15FSならびにUMC10-15FSは、650～1050 nmにおいて反射率＞99.5%です。このコーティングの全範囲に渡り、1.5 mmの溶融石英によって生じる分散を、1回の反射で補償するように設計されています。10°の入射角によりミラーはS偏光とP偏光のどちらでも同様に機能します。またこの入射角は多重反射が必要なコンパクトなセットアップにも適しています。
取り付け方法の選択
Ø12.7 mm(Ø1/2インチ)ミラーの厚さは6.35 mm、Ø25.4 mm(Ø1インチ)ミラーは9.5 mmです。これらのミラーはこの厚さに対応するミラーマウントに取り付けられます。クリアエッジを最大化するために、UMC105-15FSは180°のクリアエッジが得られる接着固定式ミラーマウントPOLARIS-C05Gに、UMC10-15FSは252°のクリアエッジが得られる接着固定式マウントPOLARIS-C1Gに取り付けることをお勧めいたします。
ズーム
- 平均反射率: ＞99%(700～1000 nm)
- 1回の反射当たりの群遅延分散(GDD): -175 fs2@800 nm
- コーティング面の寸法:50 mm x 8 mm
- 入射角8°
- スペクトル幅＞50 nm(FWHM)のパルス用に設計
- 2個入りパックでご提供
DCMP175は、700～1000 nmの波長範囲において平均反射率＞99%の長方形光学素子2個で構成されています。一般に多光子顕微鏡は分散性の高いガラスを透過する長い光路長を有しますが、こちらのミラーはそのようなセットアップに組み込むように設計されています。8°の入射角によりミラーはS偏光とP偏光のどちらでも同様に機能します。またこの入射角は多重反射が必要なコンパクトなセットアップにも適しています。
取り付け方法の選択
これらのミラーは右の写真のように回折格子用キネマティックマウントアダプタに取り付けることができます。また、このアダプタは当社のPolaris低ドリフトミラーマウントのような、Ø25.4 mm(Ø1インチ)、前面取り付け、ネジ切り無しのミラーマウントに取り付け可能です。
チャープミラー