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Optics Letters

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  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 9 — May. 1, 2014
  • pp: 2676–2679

Dependence of lasing threshold on Q factor in a deformed microcavity laser

Ji-Won Lee, Hyeon-Hye Yu, Chang-Hwan Yi, and Chil-Min Kim  »View Author Affiliations


Optics Letters, Vol. 39, Issue 9, pp. 2676-2679 (2014)
http://dx.doi.org/10.1364/OL.39.002676


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Abstract

The relationship between lasing threshold and quality (Q) factor is investigated. When a deformed microcavity laser composed of a circular arc and an isosceles trapezoid is excited by current injection, various modes lase in ten emission directions. The lasing modes are classified into four groups, and the lasing threshold of each mode group is obtained according to emission spectra. The Q factor of each mode group is obtained from the resonance by comparing the far-field patterns of resonances with those of mode groups. Through the study, we find that the lasing threshold strongly depends on the Q factor.

© 2014 Optical Society of America

OCIS Codes
(140.1540) Lasers and laser optics : Chaos
(140.5960) Lasers and laser optics : Semiconductor lasers

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: January 23, 2014
Revised Manuscript: March 2, 2014
Manuscript Accepted: March 18, 2014
Published: April 24, 2014

Citation
Ji-Won Lee, Hyeon-Hye Yu, Chang-Hwan Yi, and Chil-Min Kim, "Dependence of lasing threshold on Q factor in a deformed microcavity laser," Opt. Lett. 39, 2676-2679 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-9-2676


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