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AssigneeNippon Telegraph and Telephone Corporation
InventorsHiroyuki Suzuki, Masaki Asobe, Takeshi Umeki, Yoshiki Nishida, Osamu Tadanaga, Tsutomu Yanagawa, Katsuaki Magari, Hiroyasu Mawatari, Hiroshi Miyazawa, Junji Yumoto
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The present invention provides a periodically-poled structure with high conversion efficiency and improved manufacturing yield. The method for manufacturing a periodically-poled structure in a second order nonlinear optical crystal having a single domain structure (31) includes the steps of forming a resist pattern (32) which matches a polarization-inverted period on a −Z surface of the second order nonlinear optical crystal (31), and applying voltage to the −Z surface as a negative voltage where the resist pattern (32) is formed, and a +Z surface as a positive voltage so as to apply an electric field in the second order nonlinear optical crystal (31), wherein the second order nonlinear optical crystal (31) contains at least one element as a dopant which compensate for the crystal defects.
A method for manufacturing a periodically-poled structure in a second order nonlinear optical crystal having a single domain structure, comprising the steps of:
Dependencies are inferred from the claim text.