United photonics Technology

Waveplates 波片

Principle / Application – λ/4 Waveplate
UPT quarter waveplates create a quarter-wavelength phase shift (π/2, 90°) and can convert linear polarization to circular polarization and vice versa. They are often used with a linear polarizer to form an isolator, blocking light reflected back from other surfaces (ellipsometry, optical pumping, isolation).

Principle / Application – λ/2 Waveplate
UPT half waveplates retard one polarization direction by half a wavelength (π, 180°), effectively changing the direction of linear polarization, depending on the orientation of incident linear polarization with respect to the crystal axis. Therefor they can be used as continuously adjustable polarization rotators e.g. in electro optical modulation or as a variable beam splitter when used in combination with a polarizing beam splitter.

Zero Order Waveplate-Cemented by Epoxy  膠合零級波片

The zero order waveplate is designed to give a retardance of zero full waves, plus the desired fraction. Zero order waveplate shows better performances than multiple order waveplates, it has broad ban..

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Zero Order Waveplate-Optically Contacted  光膠零級波片

Optically Contacted zero order waveplate is constructed by two quartz plates with their fast axis crossed, the two plates are constructed by optically contacted method, the optical path is epoxy free...

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Zero Order Waveplate -Air-spaced  空氣系零級波片

Air spaced zero order waveplate is constructed by two quartz plates installed in a mount, to form a air gap between the two quartz plates. The difference in thickness between the two plates determines..

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Zero Order Waveplate-Optically Contacted

Optically Contacted zero order waveplate is constructed by two quartz plates with their fast axis crossed, the two plates are constructed by optically contacted method, the optical path is epoxy free. The difference in thickness between the two plates determines the retardation. Zero order waveplates offer a substantially lower dependence on temperature and wavelength change than multi order waveplates.

·Optically Contacted

·Thickness 1.5~2mm

·Double Retardation Plates

·Broad Spectral Bandwidth

·Wide Temperature bandwidth

·Hight Damage Threshold

Specifications:

Standard wavelength:
266nm, 355nm,532nm, 632.8nm, 780nm,808nm, 850nm, 980nm,1064nm, 1310nm, 1480nm, 1550nm

   Note:

  ?  Custom designs for other sizes and coatings are also available upon request.

  ?  UPT’s standard coatings are available.

  ?  Other waveplates with different wavelength range are also available upon request, please contact UPT for more information. 

United photonics Technology