Title:
面発光レーザ素子、面発光レーザアレイ、光走査装置及び画像形成装置
Document Type and Number:
Japanese Patent JP5527714
Kind Code:
B2
Abstract:
A surface emitting laser device (100) includes an oscillator structure (104,105,106) including an active layer (105), semiconductor multilayer reflection mirrors (103,107) sandwiching the oscillator structure, an electrode (113) provided on an emitting surface where light is emitted in a manner such that the electrode surrounds an emitting region, and a dielectric film (115) formed in at least one region outside a center part of the emitting region so that a refractive index of the region outside the center part of the emitting region is less than the refractive index of the center part of the emitting region. When viewed from an emitting direction of the light, a part of the electrode (113) overlaps a part of the dielectric film (115).
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Inventors:
Hiroshi Motomura
Shunichi Sato
Shunichi Sato
Application Number:
JP2010167735A
Publication Date:
June 25, 2014
Filing Date:
July 27, 2010
Export Citation:
Assignee:
株式会社リコー
International Classes:
B41J2/44; H01S5/183
Domestic Patent References:
| JP2001156395A | ||||
| JP2008085301A | ||||
| JP2004063707A | ||||
| JP2008016824A | ||||
| JP2009188382A | ||||
| JP2001060739A |
Foreign References:
| WO2005082010A1 |
Attorney, Agent or Firm:
Atsushi Tateishi