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长春光学精密机械与物... [3]
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会议论文 [3]
发表日期
2014 [2]
2007 [1]
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内容类型:会议论文
专题:长春光学精密机械与物理研究所
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The surface passivation on the optical and surface properties of InP
会议论文
12th China International Nanoscience and Technology Symposium, and the Nano-Products Exposition, CINSTS 2013, October 27, 2013 - October 31, 2013, Chengdu, China
Gao X.
;
Wei Z. P.
;
Fang D.
;
Zhao H. F.
;
Fang X.
;
Tian S. S.
;
Tang J. L.
;
Du P.
;
Chu X. Y.
;
Li J. H.
;
Fang F.
;
Wang X. H.
收藏
  |  
浏览/下载:19/0
  |  
提交时间:2015/04/27
The facet passivation characteristic of 940nm semiconductor laser
会议论文
2013 2nd International Symposium on Quantum, Nano and Micro Technologies, ISQNM 2013, December 1, 2013 - December 2, 2013, Singapore
Li Z. J.
;
Zheng X. G.
;
Li T.
;
Qu Y.
;
Bo B. X.
;
Liu G. J.
;
Ma X. H.
;
Wang M.
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  |  
浏览/下载:17/0
  |  
提交时间:2015/04/27
High power VCSEL device with periodic gain active region (EI CONFERENCE)
会议论文
Optoelectronic Materials and Devices II, November 2, 2007 - November 5, 2007, Wuhan, China
Ning Y. Q.
;
Qin L.
;
Sun Y. F.
;
Li T.
;
Cui J. J.
;
Peng B.
;
Liu G. Y.
;
Zhang Y.
;
Liu Y.
;
Wang L. J.
;
Cui D. F.
;
Xu Z. Y.
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  |  
浏览/下载:20/0
  |  
提交时间:2013/03/25
High power vertical cavity surface emitting lasers with large aperture have been fabricated through improving passivation
lateral oxidation and heat dissipation techniques. Different from conventional three quantum well structure
a periodic gain active region with nine quantum wells was incorporated into the VCSEL structure
with which high efficiency and high power operation were expected. The nine quantum wells were divided into three groups with each of them located at the antinodes of the cavity to enhance the coupling between the optical field and the gain region. Large aperture and bottom-emitting configuration was used to improve the beam quality and the heat dissipation. A maximum output power of 1.4W was demonstrated at CW operation for a 400m-diameter device. The lasing wavelength shifted to 995.5nm with a FWHM of 2nm at a current of 4.8A due to the internal heating and the absence of active water cooling. A ring-shape farfield pattern was induced by the non-homogeneous lateral current distribution in large diameter device. The light intensity at the center of the ring increased with increasing current. A symmetric round light spot at the center and single transverse mode operation with a divergence angle of 16 were observed with current beyond 4.8A.
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