
Quartz Multi-Order Half-Wave Plate — HWP20-488BM
HWP20-488BMDesign Tools
View all 49 calculators →Quartz Multi-Order Half-Wave Plate (Unmounted) — Model HWP20-488BM
Multi-order quartz λ/2 waveplate at 488 nm, supplied as an unmounted optical element.
Overview
LBTek's Quartz Multi-Order Half-Wave Plates deliver a half-wave (λ/2) retardance at the design wavelength using a single quartz plate whose thickness is chosen so that the optical path difference equals mλ+λ/2 (where m is a positive integer). Multi-order construction enables a single thicker plate to replace a compound zero-order design, reducing cost while preserving high transmission and damage threshold. Each plate is anti-reflection V-coated on both surfaces (R < 0.25% @ design wavelength, 6° incidence angle) and is supplied as an unmounted optical element.
Key Features
- Multi-order quartz design: mλ+λ/2 retardance (m is a positive integer)
- Delay accuracy: ±λ/100
- V-type anti-reflection coating: R < 0.25%ᵃ @ design wavelength, 6° AOI, per surface
- Surface finish: 20/10, parallelism < 3 arcsec
- Transmitted Wavefront Error (TWE) @ 633 nm verified
- Bare element for custom mounting or integration
- Design wavelengths from 266 nm to 1550 nm (optional by request)
Applications
- Polarization rotation and extinction control
- Laser isolator and interferometry systems
- Ellipsometry and polarization-resolved imaging
- Integration with polarizing beamsplitters and prisms
| Optical component material | Quartz Crystal |
| Design Wavelength | 488 nm |
| Optical element diameter | 25.4 mm |
| Diameter tolerance | +0.0/-0.1 mm |
| Clear Aperture | >90% CA |
| Thickness | <2 mm |
| Operating Wavelength | 488 nm |
| Latency | mλ+λ/2 (m is a positive integer) |
| Delay accuracy | ±λ/300 |
| Coating | V-type anti-reflection coating |
| Anti-reflective coating | R<0.25%ᵃ@Design Wavelength (6°incidence angle, single surface) |
| Surface finish (scratches/pits) | 10/5 |
| Surface Parallelism | <3 arcsec |
| Transmitted Wavefront Error (TWE) (@633 nm) | λ/10 |
| Installation Service Included | No |






