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LBTek Achromatic Half-Wave Plate — MAHWP20-LNIR
MAHWP20-LNIR$913.62
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Achromatic Half-Wave Plate (SM1 Mount) — Model MAHWP20-LNIR
Broadband λ/2 waveplate for 1100 nm-1650 nm, in SM1 lens tube.
Overview
LBTek's Achromatic Half-Wave Plate combines a quartz crystal and MgF2 element pair to deliver a true λ/2 retardance across the broadband wavelength range of 1100 nm-1650 nm. The achromatic design compensates for material dispersion, maintaining half-wave retardance accuracy across the full specified band. Both surfaces carry a low-reflectance V-coat (Ravg < 0.5%, 6° AOI). Each plate is supplied in a SM1 lens tube.
Key Features
- Achromatic design: uniform λ/2 retardance across 1100 nm-1650 nm
- Quartz crystal + MgF₂ dual-element construction
- V-coat anti-reflection: Ravg < 0.5% per surface, 6° AOI
- Delay accuracy ±λ/24 (VIS), ±λ/50 (SNIR), or ±λ/100 (LNIR)
- Transmitted Wavefront Error: λ/8 @ 633 nm
- Surface Parallelism: < 10 arcsec
- Mounted in SM1-8A lens tube (SM1 internal/external thread)
Applications
- Broadband polarization rotation (linear to orthogonal linear)
- Laser isolation and Faraday rotator systems
- White-light interferometry and ellipsometry
- Fluorescence and multi-wavelength microscopy
- Integration with broadband polarizing beamsplitters
| Optical component material | Quartz Crystal & MgF₂ |
| Clear Aperture | 20.0 mm |
| Operating Wavelength | 1100 nm-1650 nm |
| Coating | Ravg<0.5%@1100 nm-1650 nm(6°AOI, single surface) |
| Retardation | λ/2 |
| Delay accuracy | ±λ/100 |
| Surface finish (scratches/pits) | 40/20(Quartz)、80/50(MgF₂) |
| Transmitted Wavefront Error (TWE) (@633 nm) | λ/8 |
| Surface Parallelism | <10 arcsec |
| Housing Model | SM1-8A(lens tube, SM1internal/external thread) |
| Mechanical housing diameter | 30.5 mm |
| Mechanical housing diameter tolerance | +0.00/-0.05 mm |
| Mechanical housing thickness | 12.0 mm(incl. thread length) |
CAD Drawing
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Product Family: Achromatic Half-Wave Plates (9 variants)
| Product | SKU | Size | Clear Aperture | Operating Wavelength | |
|---|---|---|---|---|---|
| LBTek Achromatic Half-Wave Plate — MAHWP20-LNIR Current |
MAHWP20-LNIR
| 30.5 mm | 20.0 mm | 1100 nm-1650 nm | |
| LBTek Achromatic Half-Wave Plate — MAHWP20-SNIR |
MAHWP20-SNIR
| 30.5 mm | 20.0 mm | 700 nm-1100 nm | View |
| LBTek Achromatic Half-Wave Plate — MAHWP20-VIS |
MAHWP20-VIS
| 30.5 mm | 20.0 mm | 400 nm-700 nm | View |
| LBTek Achromatic Half-Wave Plate — AHWP20-LNIR |
AHWP20-LNIR
| 25.4 mm | 20.0 mm | 1100 nm-1650 nm | View |
| LBTek Achromatic Half-Wave Plate — AHWP20-SNIR |
AHWP20-SNIR
| 25.4 mm | 20.0 mm | 700 nm-1100 nm | View |
| LBTek Achromatic Half-Wave Plate — AHWP20-VIS |
AHWP20-VIS
| 25.4 mm | 20.0 mm | 400 nm-700 nm | View |
| LBTek Achromatic Half-Wave Plate — AHWP10-LNIR |
AHWP10-LNIR
| 25.4 mm | 10.0 mm | 1100 nm-1650 nm | View |
| LBTek Achromatic Half-Wave Plate — AHWP10-SNIR |
AHWP10-SNIR
| 25.4 mm | 10.0 mm | 700 nm-1100 nm | View |
| LBTek Achromatic Half-Wave Plate — AHWP10-VIS |
AHWP10-VIS
| 25.4 mm | 10.0 mm | 400 nm-700 nm | View |