Laser Line Beamsplitting Polarizer
Right‐angle prisms are matched in pairs to produce high quality laser line beamsplitting polarizers with superior wavefront quality in both transmission and reflection. The hypotenuse face of one prism is coated with a multilayer dielectric beamsplitting coating optimized for laser performance. Two prisms are cemented together, protecting the critical coating from performance‐degrading environmental factors. Each cube separates an unpolarized incident beam into two orthogonal, linearly polarized components with negligible absorption. Following the principle of pile‐of‐plates polarizers, p‐polarized light is transmitted with approximately 1000:1 contrast and s‐polarization is reflected with approximately 20:1 contrast. These polarizers perform best with collimated or near‐collimated light.
Key Features
High contrast
Low reflectance
Low transmitted wavefront distortion
Polarization Suite
Linear Polarizers
Precision Linear Polarizer
High Contrast Linear Polarizer
Ultra‐High Contrast Linear Polarizer
Glan‐Thompson Polarizer
Ultra Broadband Polarizer
MWIR Polarizer
Deep Ultraviolet Polarizer
Beamsplitting Polarizers
Wire Grid Versalight Polarizer
Wire Grid Versalight Beam Splitter
Laser Line Beamsplitting Polarizer
Broadband Beamsplitting Polarizer
Polarizing Bandpass Filter
Circular Polarizers
Dichroic Circular Polarizer
Beam Separator
SPECIFICATIONS
Substrate
N‐BK7
Transmitted Wavefront Distortion
(P‐V @ 632.8 nm)
≤ λ/5 for p‐polarized beam
Surface Quality
40 – 20 scratch‐dig
Beam Deviation
Transmitted Reflected
≤ 3 arc‐min
≤ 6 arc‐min
Reflectance (per surface)
≤ 0.5%
Contrast Ratio
Transmitted Reflected
≤ 500:1
≤ 20:1
Transmission
p‐polarized light s‐polarized light
≥ 95% transmitted
≥ 99% reflected
Acceptance Angle
± 2˚
Storage Temperature
‐40˚C to + 100˚C
Operating Temperature
‐40˚C to + 100˚C
Laser Damage Threshold
500 W/cm2, CW
300 mJ/cm2, 10 ns, visible
200 mJ/cm2, 10 ns, 1064 nm
ORDERING INFORMATION
Dimensions
± 0.020 in.
(± 0.51 mm)
Part Number
0.50 × 0.50 x 0.50
(12.7 x 12.7 x 12.7 mm)
BP – 050 – λ
1.00 × 1.00 × 1.00
(25.4 × 25.4 × 25.4 mm)
BP – 100 – λ