Rate equation analysis of frequency chirp in optically injection-locked quantum cascade lasers

C. Wang, F. Grillot, V. I. Kovanis, J. D. Bodyfelt, J. Even

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

The frequency chirp characteristics of an optically injection-locked quantum cascade laser are theoretically investigated. The key parameter chirp-to-power ratio (CPR) is analytically derived from a full rate equation model. The CPR value can be efficiently reduced by increasing optical injection strength, especially at modulation frequencies less than 10 GHz. In contrast to interband lasers, both positive and negative frequency detuning increase the CPR. Since the frequency detuning is also predicted to enhance the intensity modulation response, a trade-off is required in the optical injection to simultaneously obtain a large modulation bandwidth and low frequency chirp.

Original languageEnglish
Title of host publicationPhysics and Simulation of Optoelectronic Devices XXII
PublisherSPIE
ISBN (Print)9780819498939
DOIs
Publication statusPublished - 2014
Externally publishedYes
EventPhysics and Simulation of Optoelectronic Devices XXII - San Francisco, CA, United States
Duration: Feb 3 2014Feb 6 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8980
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherPhysics and Simulation of Optoelectronic Devices XXII
CountryUnited States
CitySan Francisco, CA
Period2/3/142/6/14

Keywords

  • Frequency chirp
  • Injection locking
  • Quantum cascade laser

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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