High Contrast Linear Polarizer
In response to the need for improved contrast in the near infrared region, Meadowlark Optics now offers a line of High Contrast Linear Polarizers. These polarizers are constructed by laminating Polarcor™ dichroic glass polarizers between high quality glass substrates to achieve improved wavefront performance and surface quality.
Meadowlark Optics High Contrast Linear Polarizers offer the performance of calcite polarizers in large apertures. Contrast ratios are available as high as 10,000:1. Custom wavelength ranges from 630 to 1580 nm with 60 to 80 nm bandpasses and sizes from 10 to 25 mm are available.
Key Features
Very high contrast
High transmission
Absorptive dichroic glass
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
Versalight Polarizer
Wire Grid Beam Splitter
Laser Line Beamsplitting Polarizer
Broadband Beamsplitting Polarizer
Polarizing Bandpass Filter
Circular Polarizers
Dichroic Circular Polarizer
Beam Separator
SPECIFICATIONS
Polarizer Material
Dichroic Glass
Substrate Material
BK 7 Grade A, fine annealed
Transmitt ed Wavefront Distortion (at 632.8 nm)
≤ λ/4
Surface Quality
40 – 20 scratch‐dig
Beam Deviation
≤ 3 arc min
Reflectance (per surface)
≤ 0.5% at normal incidence
Temperature Range
‐50˚C to +70˚C
Recommended Safe Operating Limit
1 W/cm2 , CW 200 mJ/cm2 , 20 ns, visible 2 J/cm2 , 20 ns, 1064 nm
Prolonged exposure to strong ultraviolet radiation may damage these polarizers.
ORDERING INFORMATION
Diameter in. (mm)
Clear Aperture in. (mm)
Thickness in. (mm)
Wavelength Range
Part Number
1.00 (25.4 mm)
0.40 (10.16 mm)
0.25 (6.35 mm)
Please specify
PPM – 050 – λ
1.00 (25.4 mm)
0.70 (17.78 mm)
0.35 (8.89 mm)
Please specify
PPM – 100 – λ