Wavelength conversion element

Details Wavelength conversion element Wavelength conversion element

2007-02-13

2007-02-13

Lee, John D. (Department: 2874)

Optical: systems and elements

Optical frequency converter

C359S332000

Reexamination Certificate

active

10522698

ABSTRACT:
Two grooves10are diced in parallel along the light passage direction in a quartz quasi-phase matching element1. Consequently, as is shown in (b) and (c), a protruding part11which is positioned between the two grooves10is formed on the upper surface side (in the figures), and a ridge type waveguide9is formed inside this protruding part. Accordingly, if light is caused to pass through this ridge type waveguide9, the light can be caused to pass through the portions with inverted crystal axes (polarization inversion regions)4, and can be subjected to a wavelength conversion, in a state in which the light is confined into the ridge type wavelength guide9. As a result, a state can be produced in which the energy of the light is high inside the wavelength conversion region, so that a high wavelength conversion efficiency can be obtained.

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patent: 2002-122898 (2002-04-01), None
Kurimura et al, “Shigai Hacho Henkan o Mezashita Giji Iso Seigo Suishi” (“Quasi-Phase-Matching Quartz Aiming at Ultraviolet Wavelength Conversion”), Oyo Butsuri, vol. 69, No. 5, pp. 548-552, Jun. 2000.
Tadashi Kurimura et al, “Shigai Hacho Henkan o Mezashita Giji Iso Seigo Suisho”, Oyo butsuri, vol. 69, No. 5, pp. 548-552 (2000).
L. Babsail et al, Second-harmonic generation in ion-implanted quartz planar waveguides, Appl. Phys. Lett., vol. 59, No. 4, pp. 384-386 (Jul. 22, 1991).
Tadashi Kurimura et al, “Shigai Hacho Henkan o Mezashita Giji Iso Seigo Suisho”, Oyo butsuri,Applied Physics, vol. 69, No. 5, pp. 548-552 (2000).
L. Babsail et al, Second-harmonic generation in ion-implanted quartz planar waveguides,Appl. Phys. Lett., vol. 59, No. 4, pp. 384-386 (Jul. 22, 1991).

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