Newport precision linear polarizers are constructed by laminating a polymer polarizing film between two high-precision glass or fused silica windows. Each window has a high-efficiency, broadband antireflection coating. The assembly is mounted in a black anodized aluminum housing for protection, with the transmission axis clearly marked. The result is linear polarizers with high transmission and low wavefront distortion that are easy to mount.
We offer polarizers for ultraviolet, visible, and near infrared wavelength ranges. The standard 12.7, 25.4, and 50.8 mm outer diameters are convenient for mounting into Newport rotary mounts.
The LPNIR series NIR Linear Polarizers do not have the housing and are available in two wavelength ranges, 750-850 nm and 1000-2000 nm. These high contrast polarizers are ideal for a wide range of applicaitons involving low power NIR lasers, LEDS, and other NIR sources.
Specifications
|
|
Ultraviolet |
Visible |
Near Infrared |
| Recommended Wavelength |
310–400 nm |
430–670 nm |
1100–1750 nm |
| Polarizing Material |
Polymer film |
| Material |
UV Grade Fused Silica |
Grade A BK7 |
Grade A BK7 |
| Wavefront Distortion |
≤ λ/2 at 632.8 nm over the clear aperture |
≤ λ/5 at 632.8 nm over the clear aperture |
≤ λ/2 at 632.8 nm over the clear aperture |
| Surface Quality |
40-20 scratch-dig |
| Transmission (unpolarized input, single polarizer)* |
TT >17% |
TT >37% |
TT >29% |
| Transmission (unpolarized input, parallel pair)* |
H0 >6% |
H0 >28% |
H0 >18% |
| Extinction Ratio k1/k2(crossed pair)* |
150:1 minimum, 500:1 typical |
>700:1 minimum; 4,000:1 typical at 633 nm |
1,000:1 minimum, 3,500 typical |
| Transmitted Beam Deviation |
≤2 arc min |
≤1 arc min |
≤2 arc min |
| Reflectivity |
Ravg <2.0 %, 300–450 nm |
Ravg <0.5 %, 400–700 nm |
Ravg <0.5 %, 1200–1700 nm |
| Diameter Tolerance |
±0.13 mm |
| Temperature Range |
-50 °C to 50 °C |
| Damage Threshold |
1 W/cm2 CW, 0.2 J/cm2 with 20 nsec pulses, visible, typical |
Specifications for LPNIR Series
| Wavelength Range |
750-850 nm |
1000-2000 nm |
| Transmittance (Average) |
30% ± 3 |
33% ± 3 |
| Extinction Ratio |
> 1000:1 ; 30 dB @ 780 nm, 40 dB @ 830 nm |
> 1000:1 ; 50 dB @ 1310 nm and 1550 nm |
| Substrate |
B270 |
B270 |
| AR Coating |
Narrowband multi-layer (both sides) |
Narrowband multi-layer (both sides) |
| Diameter Tolerance |
+0.0/-0.2 mm |
+0.0/-0.2 mm |
| Thickness |
2.0 mm |
2.0 mm |
| Thickness Tolerance |
± 0.2 mm |
± 0.2 mm |
|
Model |
Wavelength Range
(nm) |
Diameter
(mm) |
Clear Aperture
(mm) |
| Ultraviolet |
| 10LP-UV
|
300–450 |
25.4 |
17.8 |
| 20LP-UV
|
300–450 |
50.8 |
30.5 |
| Visible |
| 05LP-VIS-B
|
400–700 |
12.7 |
5.1 |
| 10LP-VIS-B
|
400–700 |
25.4 |
17.8 |
| 20LP-VIS-B
|
400–700 |
50.8 |
30.5 |
| LPGF-1
|
400 to 700 |
25.4 |
≥90% of Central Diameter |
| LPGF-2
|
400 to 700 |
25.4 |
≥90% of Central Diameter |
| Near Infrared |
| 05LP-NIR
|
1200–1700 |
12.7 |
5.1 |
| 10LP-NIR
|
1200–1700 |
25.4 |
17.8 |
| 20LP-NIR
|
1200–1700 |
50.8 |
30.5 |
| LPNIR-1
|
750-850 |
25.0 |
≥90% of Central Diameter |
| LPNIR-2
|
1000-2000 |
25.0 |
≥90% of Central Diameter |
* Specifications are based on a 1 mm diameter beam. Prolonged exposure to ultraviolet radiation may damage these polarizers.
Ultraviolet Polarizer
Visible Polarizer
Near Infrared Polarizer
Linear Polarizing Glass Filters
LPNIR Series
