Nanoparticle Linear Film Polarizers
Linear Polarizer Selection Guide| Item Series | Wavelengh Range |
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| LPUV | 365 - 395 nm | | LPVIS | 550 nm - 1.5 µm | | LPVISA | 480 - 550 nm | | LPVISB | 500 - 720 nm | | LPNIR | 650 nm - 2.0 µm | | LPNIRA | 1.0 - 3.0 µm | | LPMIR | 1.5 - 5.0 µm |
Features- High Extinction Ratio and Laser Damage Threshold (See Table Below)
- Two Polarizer Sizes: Ø12.5 mm and Ø25.0 mm
- Mounted and Unmounted Versions
- Mounted Versions with SM05 or SM1 External Threadings
- Resistant to UV Radiation and Chemicals
These Nanoparticle Linear Film Polarizers are comprised from spherical ellipsoid nanoparticles that have been embedded in sodium-silicate glass, thereby generating a polarizing effect. They offer superior performance compared to conventional, polymer-based polarizers. While both conventional and nanoparticle polarizers absorb the light that is polarized perpendicular to the transmission axis, the nanoparticles have a significantly higher damage threshold and a dramatically better extinction ratio. With the exception of the LPNIRA and the LPMIR series, the sodium-silicate glass is sandwiched between index-matched glass substrates, and a line is marked on the edge of the polarizer to indicate the polarization axis. The LPNIR and LPMIR series are only a polarizer; there is no substrate. Extinction Ratios and Laser Damage Thresholds| Series | LPUV | LPVIS | LPVIS A | LPVIS B | LPNIR | LPNIR A | LPMIR |
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| Wavelength Range | 365 - 395 nm | 550 - 1500 nm | 480 - 550 nm | 500 - 720 nm | 650 - 2000 nm | 1000 - 3000 nm | 1500 - 5000 nm | | Extinction Ratios:* | | > 100 000 : 1 | 372 - 388 nm | 600 - 1200 nm | - | - | 850 - 1600 nm | - | - | | > 10 000 : 1 | 369 - 390 nm | 550 - 1500 nm | 480 - 550 nm | 500 - 720 nm | 750 - 1800 nm | 1200 - 3000 nm | 2000 - 4500 nm | | > 1 000 : 1 | 365 - 395 nm | - | - | - | 650 - 2000 nm | 1000 - 3000 nm | 1500 - 5000 nm | Laser Damage
Threshold | 1 W/cm² Continuous Block | 10 W/cm² Continuous Block | | 5 W/cm² Continuous Pass | 25 W/cm² Continuous Pass |
*The LP Polarizer Series maintains an Extinction Ratio of at least 1000:1 over the full operating bandwidth. Extinction Ratios of 10,000:1 (Min) or 100,000:1 are maintained over specific wavelength ranges (see the Graphs tab for details).
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| Series | LPUV | LPVIS | LPVISA | LPVISB | LPNIR | LPNIRA | LPMIR |
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| Wavelength Range | 365 - 395 nm | 550 - 1500 nm | 480 - 550 nm | 500 - 720 nm | 650 - 2000 nm | 1000 - 3000 nm | 1500 - 5000 nm | | Extinction Ratios:** | | > 100,000 : 1 | 372 - 388 nm | 600 - 1200 nm | - | - | 850 - 1600 nm | - | - | | > 10,000 : 1 | 369 - 390 nm | 550 - 1500 nm | 480 - 550 nm | 500 - 720 nm | 750 - 1800 nm | 1200 - 3000 nm | 2000 - 4500 nm | | > 1000 : 1 | 365 - 395 nm | - | - | - | 650 - 2000 nm | 1000 - 3000 nm | 1500 - 5000 nm | | Polarizing Material | Nanoparticles in Sodium-Silicate Glass | | Substrate Material | Schott Glass B270 | None | | Diameter (Tolerance) | Unmounted Version: 12.5 (LPxxx050) or 25.0 mm ±0.2 mm (LPxxx100);
Mounted Version: 17.8 mm (LPxxx050) or 30.5 mm (LPxxx100) | | Clear Aperture | Unmounted Version: 90% of Surface Dimension;
Mounted Version: 75% (LPxxx050) or 82% (LPxxx100) of Surface Dimension | | Thickness | Unmounted Version: 2.0 ±0.2 mm;
Mounted Version: 10.4 mm (LPxxx050) or 11.4 mm (LPxxx100) incl. LPMIR Series | Unmounted Version:
220 ±50 µm | | Wavefront Distortion | <λ/4 @ 633 nm | <3λ @ 633 nm | | Surface Quality | Surface Imperfections: 5/2 x 0.04 within 1 cm² acc. (ISO 10110-07) | | | Acceptance Angle* | ±20° | | Laser DamageThreshold | 1 W/cm² Continuous Block | 10 W/cm² Continuous Block | | 5 W/cm² Continuous Pass | 25 W/cm² Continuous Pass | | Operating Temperature | -20 to +120 °C | -50 to +400 °C | | Maintenance | Clean with Standard Cleaning Solvents |
*The acceptance angle is limited by losses due to Fresnel reflections.
**The LP Polarizer Series maintains an Extinction Ratio of at least 1000:1 over the full operating bandwidth. Extinction Ratios of 10,000:1 (Min) or 100,000:1 are maintained over specific wavelength ranges (see the Graphs tab for details).
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The plots below show the transmission as a function of wavelength (green lines) and the extinction ratio (ER) as a function of wavelength (blue lines) for each linear polarizer when the light is normally incident. The percent transmission is the percentage of light with a linear state-of-polarization (SOP) aligned with the transmission axis that is transmitted through the linear polarizer. This number is less than 100% because of surface reflections and internal absorption. The ER is the ratio of the transmitted intensity of a linearly polarized beam of light with the orientation of the SOP parallel to the transmission axis to the transmitted intensity of the same linearly polarized beam of light with the orientation of the SOP perpendicular to the transmission axis. For reference, an ER of 1x106 is typical of a top-of-the-line Glan-Laser Calcite Polarizer, although a calcite polarizer has a significantly higher damage threshold.
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Linear Film Polarizers
