Quartz Waveplate by crylight

Quartz Waveplate and Achromatic Waveplate

  • Waveplates (retardation plates or phase shifters) are made from materials which exhibit birefringence.The velocities of the extraordinary and ordinary rays through the birefringent material varies inversely with their refractive indices.This difference in velocities gives rise to a phase difference when the two beams recombine.In the case of an incident linearly polarized beam this is given by where a is phase difference;d is thickness of waveplate; are refractive indices of extraordinary and ordinary rays respectively;is wavelength.At any specific wavelength the phase difference is governed by the thickness of the retarder.

    • Zero Order Waveplate

  • The thickness of a half waveplate is such that the phase difference is 1/2-wavelength(r/2,true zero order waveplate) or certain multiple of 1/2-wavelength[(2n+1)r/2,multiple order].
  • A linearly polarized beam incident on a half waveplate emerges as a linearly polarized beam but rotated such that its angle to the optical crylight is twice that of the incident beam.There fore half-waveplates can be used as continuously adjustable polarization rotators.Half-waveplates are used to rotate the plane of polarization,electro-optic modulation and as a variable ratio beamsplitter when used in conjunction with a polarization cube).

    • r/4 Waveplate

  • The thickness of the quarter waveplate is such that the phase difference is 1/4 wavelength(r/4,true zero order waveplate) or cer-tain multiple 1/4 wavelength[(2n+1)r/4,multiple order].
  • If the angle@(between the electric field vector of the incident linearly polarized beam and the retarder principal plane)of the quarter-waveplate is 45'the emergent beam is circularly polarized.When aquarter waveplate is double passed,i,e.by mirror reflection,it acts as a half waveplates and rotates the plane of polarization to a certain angle.Quarter waveplate are used in creating circular polarization from linear or linear polarization from circular,ellipsometry,optical pumping,suppressing unwanted reflection and optical isolation.

    • Waveplate Designer

  • In order to assist customers in effectively selecting waveplates for their application,crylight engineers have complied waveplate designer softwave to calculate the main properties of waveplate,such as thickness,orders,spectral bandwidth,temperature bandwith and angular bandwith.The interface of the Waveplate Designer is shown below.Dual-wavelength waveplate and archomatic waveplate can be also calculated.Ask crylight for more infor mation about waveplate designer if needed .You can download it from web site http://www.crylight.com.
  • crylight waveplates,including octadic-wave,quarter-wave,half-wave and full waveplates,are widely used in synthesis and analysis of light in various states of polarization.The standard wavelengths of crylight waveplates are listed below for your reference.Dual wavelength waveplates are THG-PR polarization rotators and used to manage the polarizations of laser beams to obtain maximum conversion effciency of third harmonic generations,i,e 1064 nm+532 nm->365.Generally,type I frequency-doubler(oo->e)+type II frequency-tripler(oe->e)will be the best design for THG which needs no polarization rotator.However,when a type II KTP crystal is used as frequency-doubler and type II LBO as frequency-tripler(see the Figure),the laser polarizations coming out from KTP are not optimized for THG.How to change it into its optimum?crylight THG -PR polarization rotator can do it !
  • Common 1/2 wave phase retardation plate could only rotate the polarization of 532 nm to a specific angle.However,the linear polarization of 1064 nm will be distorted to be elliptical.The THG-PR rotator is specially desgned to maintain the linear pllarization of 1064 nm wand change simultaneously 532 nm to the angle you need.The THG-PR can be applied to .

    • Airspaced Zero-Order Waveplate
    Part No. Qutside Diameter D(mm) Aperture(mm) Thicknesst(mm)
    WPA210 25.4 10.0 8.0
    WPA212 25.4 12.7 8.0
    WPA215 25.4 15.0 8.0
    WPA220 30.0 20.0 8.0
    WPA225 30.0 25.4 8.0

    Cemented & Optically Contacted Zero Order Waveplate
    Double Plates,Broad Spectral Bandwidth,Wide Temperature Bandwidth,AR Coated
    Cemented Zero-Order Optically Contracted Zero Order waveplate
    Part No. mm Part No. mm
    WPC210 10.0 WPO210 10.0
    WPC212 12.7 WPO212 12.7
    WPC215 20.0 WPO215 20.0
    WPC220 20.0 WPO220 20.0
    WPC225 25.4 WPO225 25.4
    Copyright@2004.All Rights Reserved.

    Web:www.crylight.com

    Email:sales@crylight.com

    Phone:86 591 8377 2101

    Fax:86 591 8377 2103

    CryLight Photonics, Inc.
    5/F 3#Bldg Jinshan Industrial Area No 171 Jinyan Road
    Fuzhou Fujian 350002 China
    Our services:Zero Order Waveplate Designer is shown below.Dual-wavelength waveplate and archomatic waveplate can be also calculated.Ask crylight for more infor mation about waveplate designer if needed .You can download it from web site http://www.crylight.com.