Laser wavelength conversion device, method for forming...

Details Laser wavelength conversion device, method for forming... Laser wavelength conversion device, method for forming...

2011-01-11

2011-01-11

Petkovsek, Daniel (Department: 2874)

Optical: systems and elements

Optical frequency converter

C372S022000

Reexamination Certificate

active

07869120

ABSTRACT:
An object of the invention is to increase the beam diameter of a laser beam, and perform high-output wavelength conversion without causing crystal damage. A laser wavelength conversion device includes a laser wavelength conversion element for allowing incidence of a laser beam as a fundamental wave to convert a part of the fundamental wave laser beam into a wavelength-converted laser beam having a wavelength different from a wavelength of the fundamental wave laser beam. The laser wavelength conversion element includes a non-linear optical crystal having periodically polarization reversed portions. The polarization reversed portions are formed in such a manner that a region where a wavelength conversion efficiency is substantially uniform extends in a polarization direction of the non-linear optical crystal. The incident laser beam is converted into the wavelength-converted laser beam with the wavelength conversion efficiency.

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patent: 2004-246332 (2004-09-01), None

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