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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 4 — Feb. 24, 2014
  • pp: 4196–4201

Gain-switching dynamics in optically pumped single-mode InGaN vertical-cavity surface-emitting lasers

Shaoqiang Chen, Akifumi Asahara, Takashi Ito, Jiangyong Zhang, Baoping Zhang, Tohru Suemoto, Masahiro Yoshita, and Hidefumi Akiyama  »View Author Affiliations


Optics Express, Vol. 22, Issue 4, pp. 4196-4201 (2014)
http://dx.doi.org/10.1364/OE.22.004196


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Abstract

The gain-switching dynamics of single-mode pulses were studied in blue InGaN multiple-quantum-well vertical-cavity surface-emitting lasers (VCSELs) through impulsive optical pumping. We measured the shortest single-mode pulses of 6.0 ps in width with a method of up-conversion, and also obtained the pulse width and the delay time as functions of pump powers from streak-camera measurements. Single-mode rate-equation calculations quantitatively and consistently explained the observed data. The calculations indicated that the pulse width in the present VCSELs was mostly limited by modal gain, and suggested that subpicosecond pulses should be possible within feasible device parameters.

© 2014 Optical Society of America

OCIS Codes
(140.3570) Lasers and laser optics : Lasers, single-mode
(140.5960) Lasers and laser optics : Semiconductor lasers
(140.7090) Lasers and laser optics : Ultrafast lasers
(320.5390) Ultrafast optics : Picosecond phenomena

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: September 19, 2013
Revised Manuscript: November 7, 2013
Manuscript Accepted: February 3, 2014
Published: February 18, 2014

Citation
Shaoqiang Chen, Akifumi Asahara, Takashi Ito, Jiangyong Zhang, Baoping Zhang, Tohru Suemoto, Masahiro Yoshita, and Hidefumi Akiyama, "Gain-switching dynamics in optically pumped single-mode InGaN vertical-cavity surface-emitting lasers," Opt. Express 22, 4196-4201 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-4-4196


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