Wavelength conversion element having multi-gratings and...

Details Wavelength conversion element having multi-gratings and... Wavelength conversion element having multi-gratings and...

2008-07-22

2008-07-22

Sanghavi, Hemang (Department: 2874)

Optical: systems and elements

Optical frequency converter

Harmonic generator

C359S326000, C359S330000, C372S022000

Reexamination Certificate

active

10575535

ABSTRACT:
A wavelength conversion element having multi-gratings free from damage propagation and a light generating apparatus using it, and a wavelength conversion element having multi-gratings to make a thermal distribution centrosymmetric, and being free from damage propagation, are provided. The wavelength conversion element is realized by comprising a holder and plural prismatic ferroelectric single crystals disposed in the holder, wherein plural prismatic ferroelectric single crystals have at least five planes; the aspect ratios of planes perpendicular to respective longitudinal directions of the plural prismatic ferroelectric single crystals are virtually unity; and each of the plural prismatic ferroelectric single crystals has a domain inversion structure with a predetermined period in the direction perpendicular to the polarization direction thereof, and is arranged in a way that said direction perpendicular to the polarization direction is the same as those of the other crystals.

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patent: 2003-307759 (2003-10-01), None

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