Quartz Lyot Depolarizer

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CRYLINK's quartz Lyot depolarizer converts a polarized beam into a pseudo-random polarized beam. Regarding Linearly polarized beam from a monochromatic source, the output beam is converted to pseudo-depolarized beam with polarization state varies spatially. Linearly polarized beam comes from a broadband source which is transmitted through a quartz Lyot depolarizer will have a polarization that varies spatially as well as with wavelength.CRYLINK's quartz Lyot depolarizer consists of two crystal quartz wedges, the thickness of one is twice of the other. The optical axis of each wedge is in the plane of aperture, the orientation angle between two optical axes is 45°. The unique design of the quartz Lyot depolarizer does not require orienting the optical axes of a depolarizer at a specific angle, which is especially useful where the initial polarization state of the light is unknown or varies with time.


  • Ideal for >6mm diameter Monochromatic Light & Broadband Light
  • No Requirement Of Optical Axis Alignment
  • Epoxy Cemented or Optically Contacted Available


Material Quartz+Quartz
Dimension Tolerance +0/-0.2mm
Thickness Tolerance ±0.2mm
Surface Quality 60/40
Clear Aperture >90% central
Flatness <λ/8@632.8nm
Parallelism <1 arc minute
Beam Deviation <3 arc minutes
Coating Uncoated
Damage Threshold Cemented: >500mJ/cm2,  20ns, 20Hz @1064nm
Optically contacted: >5J/cm2, 20ns, 20Hz @1064nm

Product Number Material Dimension[mm] Thickness[mm] Type Wavelength[nm] AR Coating[nm] Cart
QLD001 Quartz 25.4 7.5 Cemented 400-2500 /
QLD002 Quartz 25.4 7.5 Optically Contacted 220-2500 /