The fluorescent plate was designed to be field replaceable and can be ordered. The part number to order is 11597-103 and it can be ordered by contacting our service department at service@us.ophiropt.com.
The LBS-300HP-NIR uses specially treated material that provides extremely low reflection and high laser damage threshold, enabling beam attenuation by around a million times while keeping all beam parameters. This extreme attenuation enables measuring High Power laser beam profile focused on a beam profiler CCD.
Yes, the main function of LBS-300HP-NIR beam splitter is Beam profiling, however it performs a 3-way beam splitting:
Less than 0.0001% (1/10⁶) of the beam is reflected in one direction and less than 0.1 % in another while remaining 99.9% of incident laser beam is transmitted.
This allows user to measure one of the 3 beams, depends on available power measurement equipment and setup convenience.
Verify that the Optical Scaling (Magnification) is set to the correct value, as listed on the label of the WB-I unit
Yes, but the accuracy will be lower than what is listed in the specification.
System absorbs 20% of the power, the other 80% is back diffused from the WB-I. 200W is acceptable in continuous mode; higher power depends on environmental conditions and time of use.
The WB-I is optically aligned and calibrated for use with of any combination of 2 Ophir ND1 or ND3 filters. Other filters have a different thickness and use of them will affect the measurement accuracy
The WB-I SWIR is designated to operate without any ND filters on InGaAs camera. The attenuation is performed via Iris control wheel, which attenuates by up to 100 (ND2) . Addition of any filters will disrupt magnification.
In case additional attenuation is required, LBS-400 beam splitter is recommended.
The WB-I SWIR accessory is adjusted to work with Ophirs C-mount InGaAs cameras, SP1203, SP1201 and XC-130.
In BeamGage software, go to "Computations" tab and modify "Optical" scaling to the value indicated on label. For WB-I 8.15 and for WB-I SWIR 8.3.
According to the light source and beam geometry, customer will choose the measurement parameters which will yield most suitable results for the application, e.g. D4σ is the best for gaussian fit at M2 = 1, 50% of Peak value (FWHM) for "Tophat".
For repeatable and reproducible results, use the UltraCal and Aperture features.
For divergence angle measurements, distance from source to imaging screen should be measured. Screen is 0.5mm inside support tube end surface.
The Divergence Angle measurements can be enabled in the Results area of the BeamGage application:
In BeamGage, go to "Computation" > Divergence >Far Field Wide Angle settings to set distance from source to WB-I screen.