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Depolarizer

Depolarizer are used to reduce the polarization effect which may arise from testing sample, grating, detector etc. Wedge Depolarizer, Quartz Lyot Depolarizer and Advaced Quartz Lyot Depolarizer are offered in OptoCity.

Quartz Lyot Depolarizer

This achromatic depolarizer consists of two synthetic crystal quartz plates assembled with their optic axes lying in the plane of the plates, aligned at 45deg. Depolarization is caused by varying amounts of circular and elliptically polarized light at different wavelengths. So, this Lyot depolarizer is thus not effective with monochromatic light. The two pieces quartz plates are assembled by optically contacted.

Quartz Silica Wedge Depolarizer

This wedge depolarizer consists of a crystalline quartz wedge together with a compensating fused silica wedge to correct the angular deviation. The optic axis of the quartz wedge lies in the plane of the wedge and at 45 deg to the input polarization. The result is then a variable retardation plate over the aperture, which produces depolarization for all wavelengths. This wedge depolarizer is effective with monochromatic light as long as the beam size is big enough.

Advaced Quartz Lyot Depolarizer

This advanced depolarizers is an improved Quartz Lyot Depolarizer, which consists of two to four quartz crystal wedges with their optic axes lying in the plane of the plates, and aligned at 45° with each other. It has the advantages of both Lyot and Wedge Depolarizer. One plate of the two quartz wedges is exactly twice the thickness of the other. The result is then a variable retardation plate over the aperture, which produces depolarization for all wavelengths. This advanced depolarizer has much better depolarization result than quartz Lyot depolarizer and quartz silica wedge depolarizer.

Specifications of Advaced Quartz Lyot Depolarizer

Depolarizers Order Information

OptoCity offer different kind of depolarizer according to customer's request. Standard depolarizers are available in stock. Custom specified depolarizer is also available upon request. Please send us an email to request for quote.

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