Title:
光走査素子
Document Type and Number:
Japanese Patent JP6793194
Kind Code:
B2
Abstract:
An optical scanning device 1 includes a supporting body 2; an optical waveguide 4 composed of a single crystal having electro-optic effect and integrated with the supporting body 2 directly or through a clad layer 3; a plurality of periodic domain inversion parts 6A to 6D formed in the optical waveguide 4 , the periodic domain inversion parts having periods different from each other; and a plurality of electrodes 7A to 7D and 8A to 8D capable of applying voltages on the periodic domain inversion parts, respectively, to generate diffraction gratings in the periodic domain inversion parts, respectively. The clad layer 3 is composed of a material having a refractive index lower than a refractive index of the single crystal forming the optical waveguide. Each of the periodic domain inversion parts on which the voltage is applied is selected to generate the diffraction grating in the selected periodic domain inversion part so that a propagation light propagated in the optical waveguide is emitted to the outside of the optical scanning device as a diffracted light.
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Inventors:
Jungo Kondo
Naotake Okada
Tetsuya Ejiri
Keiichiro Asai
Shoichiro Yamaguchi
Naotake Okada
Tetsuya Ejiri
Keiichiro Asai
Shoichiro Yamaguchi
Application Number:
JP2018525929A
Publication Date:
December 02, 2020
Filing Date:
February 23, 2017
Export Citation:
Assignee:
Nippon Insulator Co., Ltd.
International Classes:
G02F1/295
Domestic Patent References:
| JP201552701A | ||||
| JP11337891A | ||||
| JP10507281A | ||||
| JP6289440A |
Foreign References:
| US5887089 | ||||
| EP0431974A2 | ||||
| US5706370 |
Other References:
井上 敏之、他,”MgO:LiNbO3周期分極反転構造を用いた電気光学ブラッグ偏向型光変調器”,2010年秋季第71回応用物理学会学術講演会講演予稿集,2010年 9月,p.05-084
M.Okazaki, et al.,"Electrooptic Bragg deflection modulator for UV laser light using periodically poled MgO:s-LiTaO3",IEEE PHOTONICS TECHNOLOGY LETTERS,2011年11月15日,Vol. 23, No. 22,p. 1709-1711
森本朗裕、他,”分極反転を用いた電気光学デバイスによるレーザー光制御”,レーザー研究,2004年 3月,第32巻第3号,pp. 165-169
M.Okazaki, et al.,"Electrooptic Bragg deflection modulator for UV laser light using periodically poled MgO:s-LiTaO3",IEEE PHOTONICS TECHNOLOGY LETTERS,2011年11月15日,Vol. 23, No. 22,p. 1709-1711
森本朗裕、他,”分極反転を用いた電気光学デバイスによるレーザー光制御”,レーザー研究,2004年 3月,第32巻第3号,pp. 165-169
Attorney, Agent or Firm:
Masumi Hosoda
Juno Aoki
Juno Aoki