Intrinsic dynamics of quantum-dash lasers

Cheng Chen, Yang Wang, Hery Susanto Djie, Boon S. Ooi, Luke F. Lester, Thomas L Koch, James C M Hwang

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Temperature-dependent intrinsic modulation response of InAs/InAlGaAs quantum-dash lasers was investigated by using pulse optical injection modulation to minimize the effects of parasitics and self-heating. Compared to typical quantum-well lasers, the quantum-dash lasers were found to have comparable differential gain but approximately twice the gain compression factor, probably due to carrier heating by free-carrier absorption, as opposed to stimulated transition. Therefore, the narrower modulation bandwidth of the quantum-dash lasers than that of quantum-well lasers was attributed to their higher gain compression factor. In addition, as expected, quantum-dash lasers with relatively long and uniform dashes exhibit higher temperature stability than quantum-well lasers. However, the lasers with relatively short and nonuniform dashes exhibit stronger temperature dependence, probably due to their higher surface-to-volume ratio and nonuniform dash sizes.

Original languageEnglish (US)
Article number9
Pages (from-to)1167-1174
Number of pages8
JournalIEEE Journal on Selected Topics in Quantum Electronics
Volume17
Issue number5
DOIs
StatePublished - 2011
Externally publishedYes

Fingerprint

Quantum dash lasers
Quantum well lasers
quantum well lasers
Modulation
lasers
modulation
Heating
heating
Temperature
Laser pulses
high gain
Bandwidth
Lasers
injection
bandwidth
temperature dependence
pulses

Keywords

  • Differential gain
  • microwave modulation
  • optical modulation
  • quantum wells
  • quantum wires
  • semiconductor lasers

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

Cite this

Chen, C., Wang, Y., Djie, H. S., Ooi, B. S., Lester, L. F., Koch, T. L., & Hwang, J. C. M. (2011). Intrinsic dynamics of quantum-dash lasers. IEEE Journal on Selected Topics in Quantum Electronics, 17(5), 1167-1174. [9]. https://doi.org/10.1109/JSTQE.2010.2103373

Intrinsic dynamics of quantum-dash lasers. / Chen, Cheng; Wang, Yang; Djie, Hery Susanto; Ooi, Boon S.; Lester, Luke F.; Koch, Thomas L; Hwang, James C M.

In: IEEE Journal on Selected Topics in Quantum Electronics, Vol. 17, No. 5, 9, 2011, p. 1167-1174.

Research output: Contribution to journalArticle

Chen, C, Wang, Y, Djie, HS, Ooi, BS, Lester, LF, Koch, TL & Hwang, JCM 2011, 'Intrinsic dynamics of quantum-dash lasers', IEEE Journal on Selected Topics in Quantum Electronics, vol. 17, no. 5, 9, pp. 1167-1174. https://doi.org/10.1109/JSTQE.2010.2103373
Chen, Cheng ; Wang, Yang ; Djie, Hery Susanto ; Ooi, Boon S. ; Lester, Luke F. ; Koch, Thomas L ; Hwang, James C M. / Intrinsic dynamics of quantum-dash lasers. In: IEEE Journal on Selected Topics in Quantum Electronics. 2011 ; Vol. 17, No. 5. pp. 1167-1174.
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