United Photonics Technology

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Waveplates

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.

Achromatic Waveplate

Unlike standard waveplates, Achromatic Waveplates, provide a constant phase shift independent of the wavelength of light that is used.This wavelength independence is achieved by using two different cr..

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Zero Order Waveplate-Cemented by Epoxy

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

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

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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True Zero Order Waveplate

Broad Spectral Bandwidth Wide Temperature Bandwidth Wide Angle Bandwidth Cemented by Expoy Specifications: Material: ..

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Low Order Waveplate

Multiple order waveplate means the retardance of a light path will undergo a certain number of full wavelength shifts in addition to the fractional design retardance. The thickness of multi order wave..

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Dual Wavelengths Waveplate

Single retardation plate Dual-wavelength AR coated, R0.2% @ foundational wavelength R0.5% @ SHG wavelength Specifications Material: ..

Low Order Waveplate

Multiple order waveplate means the retardance of a light path will undergo a certain number of full wavelength shifts in addition to the fractional design retardance. The thickness of multi order waveplate is always around 0.5mm. Compared with zero order waveplate, multi order waveplate is more sensitive to wavelength and temperature changes. However, they are less expensive and widely used in many applications where the increased sensitivities are not critical.

·Thickness: 0.2-0.5 mm

·High Damage Threshold

·Better Temperature Bandwidth

·Low Cost

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