Invention Application
US20170025820A1 SURFACE EMITTING LASER, SURFACE EMITTING LASER ELEMENT AND ATOMIC OSCILLATOR
审中-公开
表面发射激光,表面发射激光元件和原子振荡器
- Patent Title: SURFACE EMITTING LASER, SURFACE EMITTING LASER ELEMENT AND ATOMIC OSCILLATOR
- Patent Title (中): 表面发射激光,表面发射激光元件和原子振荡器
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Application No.: US15124456Application Date: 2015-02-24
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Publication No.: US20170025820A1Publication Date: 2017-01-26
- Inventor: Ryoichiro SUZUKI , Shunichi SATO
- Applicant: Ryoichiro SUZUKI , Shunichi SATO
- Applicant Address: JP Tokyo
- Assignee: RICOH COMPANY, LTD.
- Current Assignee: RICOH COMPANY, LTD.
- Current Assignee Address: JP Tokyo
- Priority: JP2014-052058 20140314
- International Application: PCT/JP2015/056020 WO 20150224
- Main IPC: H01S5/183
- IPC: H01S5/183 ; G04F5/14 ; H01S5/42 ; H03L7/26 ; H01S5/042 ; H01S5/40

Abstract:
A surface emitting laser for emitting light with a wavelength λ includes a first reflection mirror provided on a semiconductor substrate; a resonator region including an active layer provided on the first reflection mirror; a second reflection mirror, including plural low refraction index layers and plural high refraction index layers, provided on the resonator region; a contact layer provided on the second reflection mirror; a third reflection mirror provided on the contact layer; and an electric current narrowing layer provided between the active layer and the second reflection mirror or in the second reflection mirror. Optical lengths of at least one of thicknesses of the low refraction index layers and the high refraction index layers formed between the electric current narrowing layer and the contact layer are (2N+1)×λ/4 (N=1, 2, . . . ).
Public/Granted literature
- US10084286B2 Surface emitting laser, surface emitting laser element and atomic oscillator Public/Granted day:2018-09-25
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