Broadband Beamsplitting Polarizer
For applications involving broadband or tunable wavelength sources, Meadowlark Optics presents a line of Broadband Beamsplitting Polarizers covering the visible to near infrared region. These cubes offer increased utility for a range of polarization needs. As with the Laser Line Beamsplitting Polarizers, two usable polarization forms result, conveniently separated by 90°. For unpolarized input, incident light will be equally split, 50% transmitted and reflected. Varying the input polarization axis will change the split ratio. These broadband designs require well‐collimated input and accurate angular alignment for optimal performance. All four entrance and exit faces are antireflection coated to minimize losses.
Key Features
High contrast
Low reflectance
Broad spectral range
High damage threshold
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
Wavelength Range
Visible Near IR1 Near IR2
Near IR3
440 – 680 nm
620 – 900 nm
820 – 1250 nm
1150 – 1600 nm
Substrate Material
SF 2
Transmitted Wavefront Distortion
(at 632.8 nm)
≤ λ/5 for p‐polarized beam
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
≥ 98% reflected
Clear Aperture
Central 80% diameter
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, at 1064 nm
ORDERING INFORMATION
Clear Aperture
Dimensions
± 0.020 in.
(± 0.51 mm)
Part Number
Visible (440‐680)
0.40 × 0.40 × 0.40
(10.2 x 10.2 x 10.2 mm)
0.50 × 0.50 × 0.50
(12.7 x 12.7 x 12.7 mm)
BB – 050 – VIS
0.80 × 0.80 × 0.80
(20.3 × 20.3 × 20.3 mm)
1.00 × 1.00 × 1.00
(25.4 × 25.4 × 25.4 mm)
BB – 100 – VIS
Near IR1 (620‐900 nm)
0.40 × 0.40 × 0.40
(10.2 x 10.2 x 10.2 mm)
0.50 × 0.50 × 0.50
(12.7 x 12.7 x 12.7 mm)
BB – 050 – IR1
0.80 × 0.80 × 0.80
(20.3 × 20.3 × 20.3 mm)
1.00 × 1.00 × 1.00
(25.4 × 25.4 × 25.4 mm)
BB – 100 – IR1
Near IR2 (820‐1250 nm)
0.40 × 0.40 × 0.40
(10.2 x 10.2 x 10.2 mm)
0.50 × 0.50 × 0.50
(12.7 x 12.7 x 12.7 mm)
BB – 050 – IR2
0.80 × 0.80 × 0.80
(20.3 × 20.3 × 20.3 mm)
1.00 × 1.00 × 1.00
(25.4 × 25.4 × 25.4 mm)
BB – 100 – IR2
Near IR3 (1150‐1600 nm)
0.40 × 0.40 × 0.40
(10.2 x 10.2 x 10.2 mm)
0.50 × 0.50 × 0.50
(12.7 x 12.7 x 12.7 mm)
BB – 050 – IR3
0.80 × 0.80 × 0.80
(20.3 × 20.3 × 20.3 mm)
1.00 × 1.00 × 1.00
(25.4 × 25.4 × 25.4 mm)
BB – 100 – IR3