Active optical system for changing the wavelength of an image

Details Active optical system for changing the wavelength of an image Active optical system for changing the wavelength of an image

2005-11-22

2005-11-22

Lee, John D. (Department: 2874)

Optical: systems and elements

Optical frequency converter

C359S237000, C359S247000

Reexamination Certificate

active

06967765

ABSTRACT:
A first control optics assembly receives an incoming optical image. A template optical element produces a template optical intensity profile. A second control optics assembly receives the template optical intensity profile. A polarization separator receives an output from the second control optics. A quarter wave plate changes the polarization of the polarized output therefrom. A combiner receives an output from the first control optics assembly and an output from the quarter wave plate and provides a combined, co-linear propagation output image having an initial beam size. An SLM provides absorption of a portion of the combined output image which changes the local index of refraction of the SLM so that the local reflection at the template optical intensity profile changes. The template optical intensity profile reproduces the image of the absorbed portion as an outgoing image that is reflected back through a portion of the system providing a converted image having substantially the same intensity pattern as the incoming optical image but a different wavelength.

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patent: 6819476 (2004-11-01), Hunt
patent: 2001/0017727 (2001-08-01), Sucha et al.

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