这些光束采样器设计为使得单个楔形的优先偏振选择效果被抵消，并且所得的光束图像被偏振校正以恢复原始光束的偏振分量。

• 设计为与 LBP2 光束分析仪一起使用

• 样品被偏振校正

• 包括一组可调节的 ND 滤光片

特征：

用于大功率输入的实时光束监控的光束采样器

Additional ND Filters Included

A set of adjustable ND filters, ranging from OD0.3 up to OD4, are provided in the -UV, -VIS, and -NIR versions to make final intensity adjustments to the beam before it reaches the camera imager, after beam passes through the wedges. In the -BB version, all the ND filters included in the -UV, -VIS, and -NIR versions are included.  There are two slots in series to insert the ND filters on the beam sampler.  Damage threshold of these ND filters are 50 W/cm2 ( 100 mW/cm2 for -UV version), however, distortion due to thermal lensing can happen at as low as 5 W/cm2.  It is advised to use this sampler for optical power ranging from 10 mW to ~400 Watts.

The Broadband Version

One can choose to use the broadband LBP2-SAM-BB2 to handle multiple lasers with a broad range of wavelengths.  The differences between the broadband version from the others are as follows:

The wedges are not coated with anti-reflection coating

All the ND filters included in the UV, VIS, and the NIR versions are included

Best Use Recommendation

The ultimate goal of using the beam sampler and the ND filters are to keep the laser intensity level maximum but below the sensor saturation level without damaging any optical element. Since the wedges are highly reflective, they are not of concern in most cases.  Keep the laser power so that the intensitive level at below 5 W/cm2 at the first surface of the ND filters to avoid a thermal lensing effect.  Also, try to avoid using too many ND filters.  The more filters are used in the beam path, the more distortion and interference can happen.