Unpolarized beam splitter having polarization-independent...

Details Unpolarized beam splitter having polarization-independent... Unpolarized beam splitter having polarization-independent...

2006-12-05

2006-12-05

Mack, Ricky (Department: 2873)

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

C359S618000

Reexamination Certificate

active

07145727

ABSTRACT:
Beam splitter designs for interferometers provide a phase difference between the two resulting interference beams that are independent of the polarization status of the incident beam. The polarization independent phase coating is achieved by making the internal beam splitting coating of an unpolarized beam splitter to be symmetrical. A symmetrical coating will produce the phase matching condition, ΨSR−ΨSR′=ΨPR−ΨPR′=0.

REFERENCES:
patent: 4431258 (1984-02-01), Fye
patent: 4627688 (1986-12-01), Kobayashi et al.
patent: 5400179 (1995-03-01), Ito
patent: 5717523 (1998-02-01), Ohashi
patent: 5912762 (1999-06-01), Li et al.
patent: 2002/0012168 (2002-01-01), Li

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