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LBP2 Series Laser Beam Samplers
LBP2 Series Laser Beam Samplers
LBP2 series laser beam samplers have been discontinued. Please see the replacement products in table below.
- Designed to work with LBP2 beam profilers (C-mount)
- Sample is polarization corrected
- Includes set of adjustable ND filters
- Multiple mounting points See All Features
Features
Beam Samplers for Real Time Beam Monitoring for High Power Input
The LBP2-SAM Series beam sampler is designed so that the preferential polarization selection effect of a single wedge is cancelled out and the resulting beam image is polarization corrected to restore the polarization components of the original beam. The beam sampler operates by reflecting the incoming beam from the front surfaces of a pair of wedges through 90 degrees into the camera. The wedges for the UV, VIS, and IR are AR coated for the appropriate operating wavelength ranges. The wedges for the broadband BB model are uncoated. For the UV, VIS, and IR models, approximately 99% of the beam is transmitted through the beam sampler with 0.01% passed on to the camera. For the BB model, approximately 95% of the beam is transmitted through the beam sampler with 0.25% passed on to the camera. Also, two samplers can be coupled in series providing up to a 10-8 attenuation (6 X 10-6 for BB).
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.
Replacement Products for LBP2 Series Beam Profilers and Samplers
| Part Number | Description | Replacement |
|---|---|---|
| LBP2-HR-VIS3 | Beam Profiler, 190-1100 nm | SP90608 |
| LBP2-HR-IR3 | Beam Profiler, 1440-1605 nm | SP90563 |
| LBP2-SAM-BB2 | Beam Sampler, 190-1550 nm | SP90467 |
| LBP2-SAM-UV2 | Beam Sampler, 266-355 nm | SP90464 |
| LBP2-SAM-VIS2 | Beam Sampler, 400-700 nm | SP90465 |
| LBP2-SAM-NIR2 | Beam Sampler, 1064 nm | SP90466 |
| LBP2-ND1 | ND1 Attenuator | SPZ08234 |
| LBP2-ND2 | ND2 Attenuator | SPZ08235 |
| LBP2-ND3 | ND3 Attenuator | SPZ08253 |
| LBP2-UVBS | UV Beam Splitter | SPZ17015 |
| LBP2-UVIMG | 1X UV Image Converter | SPZ17023 |
Resources
Manuals
LBP2-SAM2 Laser Beam Samplers User Manual(826.6 kB, PDF)
