Our VA-CB series of variable beam splitters provide continuous beam splitting for many CW or pulsed lasers. The VA-CB series is designed to provide high contrast beam splitting of linearly polarized light over a series of broad wavelength ranges.
Additional drawings are not available for this product.
Specifications
Attenuation Range
Tp > 90% average Rs > 99.5% average
Extinction Ratio
Tp/Rs > 500:1, 1000:1 average
Damage Threshold
500 W/cm2 CW, 2 J/cm2 with 8 nsec pulses at 1064 nm, typical
Clear Aperture
10 mm
Features
Manual Tunable Laser Beam Attenuators
The manual versions of the VA-CB series come with a manual rotary stage containing the half-waveplate. The user manually rotates the stage to control attenuation.
CONEX™ Motorized Tunable Laser Beam Attenuators
The motorized versions of the VA-CB series come with a motorized rotary stage containing the half-waveplate. Software is included which allows the user to calibrate the VA-CB at a single wavelength on either exit port. The motorized version can be used in open- or closed-loop operation.
Motorized, Variable Beam Splitter (Post and post holder sold separately)
Compact Industrial Housing
The optics and high-precision opto-mechanics are incorporated into a compact housing, flexibly designed for post mounting at varying optical axis heights. P-polarized light is transmitted with minimal loss collinear to the input beam path while S-polarized light is reflected 90º. A removable beam dump is included on the reflected beam port, allowing the use of the VA-CB as a variable attenuator for the transmitted beam. M-4 and 8-32 threads are included on the opposite side and bottom of the housing for mounting on optical posts. This allows for various polarized output options.
The VA-CB series is based on zero-order half-waveplates and polarizing cube beam splitters. These broadband versions are designed to handle average powers up to 500 Watts for wavelength ranges of 400-700 nm, 700-1000 nm, 900-1300 nm or 1200-1600 nm.
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