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Achromatic Quarter-Wave Plate — MAQWP20-SNIR
MAQWP20-SNIR$1,435.52
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Achromatic Quarter-Wave Plate (SM1 Mount) — Model MAQWP20-SNIR
Broadband λ/4 waveplate for 700 nm-1100 nm, in SM1 lens tube.
Overview
The Achromatic Quarter-Wave Plate combines a quartz crystal and MgF2 element pair to deliver a true λ/4 retardance across the broadband wavelength range of 700 nm-1100 nm. The achromatic design compensates for material dispersion, maintaining quarter-wave retardance accuracy across the full specified band rather than at a single design wavelength. Both surfaces are coated for Ravg < 0.5% at 6° AOI. Each plate is supplied in a SM1 lens tube.
Key Features
- Achromatic design: uniform λ/4 retardance across 700 nm-1100 nm
- Quartz crystal + MgF₂ dual-element construction
- Ravg < 0.5% per surface, 6° AOI
- Retardance accuracy: ±λ/100
- Transmitted Wavefront Error: λ/8 @ 633 nm
- Surface Parallelism: < 10 arcsec
- Mounted in SM1-8A lens tube (SM1 internal/external thread)
Applications
- Broadband polarization state conversion (linear ↔ circular)
- White-light interferometry and ellipsometry
- Fluorescence and multi-wavelength microscopy
- Optical coherence tomography (OCT)
- Integration with broadband polarizing beamsplitters
| Optical component material | Quartz crystal & MgF2 |
| Clear Aperture | 20.0 mm |
| Operating Wavelength | 700 nm-1100 nm |
| Coating | Ravg<0.5%@700 nm-1100 nm (6°AOI, single surface) |
| Retardation | λ/4 |
| Delay accuracy | ±λ/100 |
| Surface finish (scratches/pits) | 40/20 (Quartz), 80/50 (Magnesium fluoride) |
| Transmitted Wavefront Error (TWE) (@633 nm) | λ/8 |
| Surface Parallelism | <10 arcsec |
| Housing Model | SM1-8A (Lens tube, SM1 internal and external threads) |
| Mechanical housing diameter | 30.5 mm |
| Mechanical housing diameter tolerance | +0.00/-0.05 mm |
| Mechanical housing thickness | 12.0 mm (with threaded length) |
CAD Drawing
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Product Family: Achromatic Quarter-Wave Plates (9 variants)
| Product | SKU | Housing Diameter | Housing Thickness | Operating Wavelength | |
|---|---|---|---|---|---|
| Achromatic Quarter-Wave Plate — MAQWP20-LNIR |
MAQWP20-LNIR
| 30.5 mm | 12.0 mm (with threaded length) | 1100 nm-1650 nm | View |
| Achromatic Quarter-Wave Plate — MAQWP20-SNIR Current |
MAQWP20-SNIR
| 30.5 mm | 12.0 mm (with threaded length) | 700 nm-1100 nm | |
| Achromatic Quarter-Wave Plate — MAQWP20-VIS |
MAQWP20-VIS
| 30.5 mm | 12.0 mm (with threaded length) | 400 nm-700 nm | View |
| Achromatic Quarter-Wave Plate — AQWP20-LNIR |
AQWP20-LNIR
| 25.4 mm | 5.94 mm | 1100 nm-1650 nm | View |
| Achromatic Quarter-Wave Plate — AQWP20-SNIR |
AQWP20-SNIR
| 25.4 mm | 5.94 mm | 700 nm-1100 nm | View |
| Achromatic Quarter-Wave Plate — AQWP20-VIS |
AQWP20-VIS
| 25.4 mm | 5.94 mm | 400 nm-700 nm | View |
| Achromatic Quarter-Wave Plate — AQWP10-LNIR |
AQWP10-LNIR
| 25.4 mm | 5.94 mm | 1100 nm-1650 nm | View |
| Achromatic Quarter-Wave Plate — AQWP10-SNIR |
AQWP10-SNIR
| 25.4 mm | 5.94 mm | 700 nm-1100 nm | View |
| Achromatic Quarter-Wave Plate — AQWP10-VIS |
AQWP10-VIS
| 25.4 mm | 5.94 mm | 400 nm-700 nm | View |