Corner cube depolarizer

Details Corner cube depolarizer Corner cube depolarizer

2007-08-07

2007-08-07

Wood, Kevin (Department: 2874)

Optical waveguides

Polarization without modulation

C385S036000, C359S488010, C359S834000

Reexamination Certificate

active

11247020

ABSTRACT:
The depolarizer utilizes a commonly available BK7 glass corner cube to transform linearly polarized light into depolarized light with 100% conversion efficiency. The low-cost corner cube is a unique optical element that greatly simplifies the means for producing completely depolarized light as compared to other current methods and techniques. The corner cube is irradiated uniformly, but at non-normal incidence for a tilt angle of about 9° with respect to the input light beam path. The polarization orientation angle of the input beam in combination with the tilt angle and tilt-axis orientation of the corner cube must be optimized in order to make the Stokes polarization parameters equal to zero, and thereby generating the depolarized light beam A bidirectional beam director steers the retro-reflected depolarized light beam from the corner cube to the output port of the depolarizer.

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Ralph Kalibjian, “Stokes polarization vector and Mueller matrix for a corner cube reflector”, Optics Communications (journal), Oct. 2004, 39-68, vol. 204, Elsevier, Amsterdam.

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