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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 620-900 nm 820-1250 nm 1150-1600 nm |
| Substrate Material | SF 2 |
|
Transmitted Wavefront Distortion (P-V @ 632.8 nm) (P-V @ 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, 1064 nm |
| 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 (620-900 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 (820-1250 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 (1150-1600 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 |
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