Broadband Beamsplitting Polarizer

Broadband Beamsplitting Polarizer

KEY FEATURES
  • High contrast
  • Low reflectance
  • Broad spectral range
  • High damage threshold
DESCRIPTION

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.

Specifications - Broadband Beamsplitting Polarizer
Wavelength Range
Visible
Near IR1
Near IR2
Near IR3
440-680 nm
650-1000 nm
900-1400 nm
1200-1600 nm
Substrate Material SF 2
Surface Quality 40 - 20 scratch - dig
Surface Flatness λ/8 @ 633 nm
Beam Deviation ≤ 3 arc-min
Dimension Tolerance ≤ +0/-0.20 mm
Reflectance (per surface) ≤ 0.5% avg
Contrast Ratio ≥ 500:1 (Average)
Transmission (p-polarized light)
Transmission (s-polarized light)
≥ 90% avg
≥ 99.8% avg
Clear Aperture Central 85% diameter
Storage Temperature -50°C to +80°C
Operating Temperature -50°C to +80°C
Laser Damage Threshold ≥ 0.5 j/cm2 (10ns)
 

 

Ordering Information - Broadband Beamsplitting Polarizer
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]
0.50 × 0.50 × 0.50
[12.7 x 12.7 x 12.7]
BB-050-VIS
0.80 × 0.80 × 0.80
[20.3 × 20.3 × 20.3]
1.00 × 1.00 × 1.00
[25.4 × 25.4 × 25.4]
BB-100-VIS
Near IR1 (650-1000 nm)
0.40 × 0.40 × 0.40
[10.2 x 10.2 x 10.2]
0.50 × 0.50 × 0.50
[12.7 x 12.7 x 12.7]
BB-050-IR1
0.80 × 0.80 × 0.80
[20.3 × 20.3 × 20.3]
1.00 × 1.00 × 1.00
[25.4 × 25.4 × 25.4]
BB-100-IR1
Near IR2 (900-1400 nm)
0.40 × 0.40 × 0.40
[10.2 x 10.2 x 10.2]
0.50 × 0.50 × 0.50
[12.7 x 12.7 x 12.7]
BB-050-IR2
0.80 × 0.80 × 0.80
[20.3 × 20.3 × 20.3]
1.00 × 1.00 × 1.00
[25.4 × 25.4 × 25.4]
BB-100-IR2
Near IR3 (1200-1600 nm)
0.40 × 0.40 × 0.40
[10.2 x 10.2 x 10.2]
0.50 × 0.50 × 0.50
[12.7 x 12.7 x 12.7]
BB-050-IR3
0.80 × 0.80 × 0.80
[20.3 × 20.3 × 20.3]
1.00 × 1.00 × 1.00
[25.4 × 25.4 × 25.4]
BB-100-IR3
Custom sizes are available.
Please contact our Sales Department