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        HOME >PRODUCT DISPLAY >PRODUCT DETAIL
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        Waveplates
            Waveplates (retarders) are made from birefringent materials which introduce a phase difference between the fast and slow principal axis of the waveplate. The optical axis of waveplate is parallel to the face. Light incident normal to the surface will be split to components polarized parallel and perpendicular to the optical axis with different refractive index and velocity in this device. The difference in velocities gives rise to a phase shift which is called retardance. At any specific wavelength the phase retardance is governed by the thickness of Waveplates. The standard waveplates we provided include half waveplates and quarter waveplates, other custom waveplates can also be provided upon request.
        • DETAIL
        • STANDARD PRODUCT
        • BASIC PROPERTIES
        • Applications:

             Half Waveplate
             When applying a linearly polarized beam to a half waveplate, it emerges as a linearly polarized beam but its polarization plane is rotated with respect to the polarization plane of the input beam. The rotation of the polarization plane is such that the angle between the input polarization and the output polarization is twice the angle between the input polarization and the waveplate's axis. When applying a circularly polarized beam, a clockwise circular polarization will transform into a counter-clockwise circular polarization and vice versa. Half waveplates are often used as continuously adjustable polarization rotators and as a variable ratio beamsplitter when used in conjunction with a polarization beamsplitter cube.
           
          Quarter Waveplate
             When applying a linearly polarized beam with the polarization plane aligned at 45deg to the waveplate's principal plane, the output beam will be circularly polarized. Similarly when applying a circularly polarized beam to a λ/4 waveplate the output beam will be linearly polarized. When a quarter waveplate is double passed, i.e. by mirror reflection, it acts as a half waveplate and rotates the plane of polarization to a certain angle. Quarter waveplates are widely used in creating circular polarization from linear or linear polarization from circular, ellipsometry, optical pumping, suppressing unwanted reflection, optical isolation and etc.


        • Material

          Crystal Quartz

          Dimension Tolerance

          +0.0/-0.2mm

          Wavefront Distortion

          [email protected]

          Retardation Tolerance

          λ/300

          Parallelism(single plate)

          <1 arc second

          Surface Quality

          20/10 scratch and dig

          Clear Aperture

          >90% central area

          AR Coating

          R<[email protected] wavelength

          Damage Threshold

          >5J/cm2, 20ns, 20Hz @1064nm


        • Type

          Feature

          Zero Order

          Cemented

          Cemented by glue

          Better Temperature Bandwidth

          Wide Wavelength Bandwidth

          Moderate damage threshold


          Optical Contacted

          No glue

          Better Temperature Bandwidth

          Wide Wavelength Bandwidth

          Better damage threshold

          Good wavefront and parallelism


          Air Spaced

          No glue, Mounted

          Better Temperature Bandwidth

          Wide Wavelength Bandwidth

          High damage threshold

          Good wavefront

          True Zero Order

          Cemented

          Cemented by glue

          Better Temperature Bandwidth

          Wide Wavelength Bandwidth

          Moderate damage threshold

          Good wavefront and parallelism

          Telecom Waveplate

          Single plate

          Better Temperature Bandwidth

          Wide Wavelength Bandwidth

          High damage threshold

          Good wavefront and parallelism

          Only 1310nm, 1550nm available

          Multi Order

          Low Temperature Bandwidth

          Low Wavelength Bandwidth

          High damage threshold

          Good wavefront and parallelism

          Low cost

          Dual Wavelength

          Provide Specific Retardance At Two Different Wavelengths

          Achromatic

          Better Temperature Bandwidth

          Very broad Wavelength Bandwidth

          Cemented and air spaced available

          Wedge Waveplate

          Eliminate Etalon effect

          Eliminate Return Beam


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