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双波长波片是设计用于双波长工作中, 对于其中一个波长为1/4波片, 另一个波长为半波片. 一个常见的应用是将一个波长的偏振态旋转90°, 而另一波长的偏振态保持不变. 这经常发生在非线性倍频或三倍频的激光光源, 如Nd:YAG激光器(1064/532/355/266nm).
特性:
- λ1时为1/4波片,λ2时为1/2波片
- 高损伤阈值
- 较窄的带宽和温度范围
- 可提供各种波长和相位延迟
双波长波片规格:
|
材料 |
Crystal Quartz, laser quality |
|
波片结构 |
Single plate |
|
工作波长 |
532 nm & 1064 nm |
|
延迟角精度 |
< λ/100 at both wavelengths at 23° C |
|
尺寸公差 |
+0.0/-0.2mm |
|
有效口径 |
> 90% central |
|
波前畸变 |
λ/8 @632.8nm |
|
平行度 |
< 1 arc second |
|
表面质量 |
20-10 scratch-dig |
|
增透膜层 |
R < 0.5% at both wavelengths |
|
损伤阈值 |
> 5J/cm2, 20ns, 20Hz@ 1064 nm |
订购信息:
Description: Dual Wavelength WavePlate
Part Number: WPD–Retardance–Dimension–Coating–Mount
Retardance: λ/2@1064nm & λ@532nm, λ@1064nm & λ/2@532nm, λ/2@1064nm & λ/4@532nm,
λ/4@1064nm & λ/2@532nm, λ/4@1064nm & λ@532nm
Dimension: Φ10.0mm, Φ12.7mm, Φ15.0mm, Φ20.0mm, Φ25.4mm, or Others
Coating: AR coating or Uncoated
Mount: Φ25.4mm, Φ30.0mm or Unmounted