Intra-pulse modal instability and beam steering in Quantum Cascade laser

Yu Yao, Pierre M. Bouzi, Nyan L. Aung, Peter Q. Liu, Yuting Huang, Claire Gmachl, Xiaojun Wang

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

3 Scopus citations

Abstract

Time-resolved far-field measurements of Quantum Cascade lasers show intra-pulse beam steering on the nanosecond scale. Spatially-dependent spectra at different pulse times show evidence of frequency locking between transverse modes when the beam steering happens. The light pulse instability has been found to reduce the device received output power by 20% in some cases. A proposal on how to reduce the instability by transverse mode control is presented.

Original languageEnglish (US)
Title of host publication2012 Lester Eastman Conference on High Performance Devices, LEC 2012
PublisherIEEE Computer Society
ISBN (Print)9781467329088
DOIs
StatePublished - Jan 1 2012
Externally publishedYes
Event2012 Lester Eastman Conference on High Performance Devices, LEC 2012 - Providence, RI, United States
Duration: Aug 7 2012Aug 9 2012

Publication series

Name2012 Lester Eastman Conference on High Performance Devices, LEC 2012

Other

Other2012 Lester Eastman Conference on High Performance Devices, LEC 2012
CountryUnited States
CityProvidence, RI
Period8/7/128/9/12

Keywords

  • Quantum Cascade laser
  • beam steering
  • instability

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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  • Cite this

    Yao, Y., Bouzi, P. M., Aung, N. L., Liu, P. Q., Huang, Y., Gmachl, C., & Wang, X. (2012). Intra-pulse modal instability and beam steering in Quantum Cascade laser. In 2012 Lester Eastman Conference on High Performance Devices, LEC 2012 [6410997] (2012 Lester Eastman Conference on High Performance Devices, LEC 2012). IEEE Computer Society. https://doi.org/10.1109/lec.2012.6410997