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Multi-Order Waveplates

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  • Multi-Order Waveplates

  • Description
    CAS' TECH CLASS
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    Specifications:

     

    Material

    Crystal Quartz

    Diameter Tolerance
    +0/-0.25mm
    Clear Aperture
    ≥ central 90%  of  diameter
    Retardance Accuracy
    <λ/300
    Surface Quality
    20/10
    Wavefront  Distortion
    λ/10 @632.8nm over the clear  aperture
    Parallelism
    ≤3″
    Coating
    R<0.25%
    Damage Threshold
    2MW/cm2,2J/cm2,10ns

     

       

       •   Wide Temperature Bandwidth   

       •  CASTECH’s standard coatings are available   

       •   Custom designs for other sizes and coatings are also vailable upon request.   

     

    Single Wavelength Waveplates

     

     

    Order Information:

     

    WPL
    ----
    254
    ----
    1/4
    ----
    W1064
     
     
     
    Product Code
     
    Φ=25.4mm
     
    Retardation=λ/4
     
    Wavelength "λ"=1064nm

     

     

    Half  Waveplate

    Quarter Waveplate
       WPL-127-1/2-λ   
       WPL-127-1/4-λ   
    WPL-150-1/2-λ
    WPL-150-1/4-λ
    WPL-200-1/2-λ
    WPL-200-1/4-λ
    WPL-254-1/2-λ
    WPL-254-1/4-λ

     

    Standard Wavelength (λ):

     

    Wavelength
    248nm
    413nm
    514.5nm
    632.8nm
    800nm
    1064nm
    266nm
    441.6nm
    532nm
    647.1nm
    830nm
    1300nm
    308nm
    457.9nm
    543.5nm
    676.4nm
    850nm
      1315nm  
    351nm
    488nm
    594nm
      694.3nm  
    905nm
    1320nm
      354.7nm  
      510.5nm  
      611.9nm  
    780nm
      1050nm  
    1550nm

     

    Dual Wavelength Waveplates

     

     Dual wavelength waveplate is widely used on Third Harmonic Generation (THG) system. When you need a NLO crystal for type II SHG (o+e→e), and a NLO crystal for type II THG (o+e→e), the  out put polarization from SHG can not be used for THG. So you must  turn the polarization to get two perpendicular polarization for type II THG. Dual wavelength waveplate works like a polarizing rotator, it can rotate the polarization of one beam and remain another beam's polarization. Also the dual wavelength waveplate can be applied to following systems: 

     

            •   Type II SHG + Type II THG

            •   Type II SHG + Type I THG

            •   Type I SHG  + Type I THG 

     

    For example: we use KTP as SHG type II and LBO as THG type II, but the polarization of output beam from KTP is not optimized for THG type II. When we use a dual wavelength waveplate as drawing, it can change the 532nm beam to a special angle polarization but not change 1064nm beam at all.

     

     

    Specifications:

     

    Material
    Crystal Quartz
    Diameter Tolerance
    +0/-0.25mm
    Clear Aperture
    ≥ central 90%  of  diameter
    Retardance Accuracy
    <λ/100
    Surface Quality
    20/10
    Wavefront  Distortion
    λ/10 @ 632.8nm over the clear aperture
    Parallelism
    ≤3″
    Coating
    Laser Line V AR Coating  R<0.25%< span="">
    Damage Threshold
    2MW/cm2,2J/cm2,10ns

     

     

    Order Information:

     

    WPD
    ----
    127
    ----
    1/2
    ----
    1/4
    ----
    W1064
    ----
    W532
     
     
     
     
     
    Product Code
     
    Φ=25.4mm
     
    Retardation1 1=λ/2
     
    Retardation1 2=λ/4
     
    Wavelength1 1=1064nm
     
    Wavelength1 2=532nm


    Standard Retardation:

     

    Wavelength 1-Wavelength2
     W1064-W532(nm) 
    W1064-W532(nm)
    W532-W266(nm)
    W532-W355(nm)
    Retardation 1-Retardation2
    λ-λ/2
    λ/2-λ
    λ/4-λ/2
    λ/2-λ/4

     

    Note:

       •  Custom designs for other sizes ,coatings and holders are also available upon request.

       •  CASTECH's standard coatings are available upon request.

     

     

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