Coherent light generators – Particular beam control device – Nonlinear device
Reexamination Certificate
2007-12-27
2009-08-04
Nguyen, Dung T (Department: 2828)
Coherent light generators
Particular beam control device
Nonlinear device
C372S022000
Reexamination Certificate
active
07570677
ABSTRACT:
After forming domain inverted layers3in an LiTaO3substrate1, an optical waveguide is formed. By performing low-temperature annealing for the optical wavelength conversion element thus formed, a stable proton exchange layer8is formed, where an increase in refractive index generated during high-temperature annealing is lowered, thereby providing a stable optical wavelength conversion element. Thus, the phase-matched wavelength becomes constant, and variation in harmonic wave output is eliminated. Consequently, with respect to an optical wavelength conversion element utilizing a non-linear optical effect, a highly reliable element is provided.
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Kato Makoto
Kitaoka Yasuo
Mizuuchi Kiminori
Yamamoto Kazuhisa
Nguyen Dung T
Panasonic Corporation
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