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Multimodal spectral control of a quantum-dot diode laser for THz difference frequency generation

Multimodal spectral control of a quantum-dot diode laser for THz difference frequency generation

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Authors

  • R. Leyman
  • D. I. Nikitichev
  • N. Bazieva
  • E. U. Rafailov

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Original languageEnglish
Article number171107
Pages-
Number of pages3
JournalApplied Physics Letters
Journal publication date24 Oct 2011
Volume99
Issue17
DOIs
StatePublished

Abstract

Generation of stable dual and/or multiple longitudinal modes emitted from a single quantum dot (QD) laser diode (LD) over a broad wavelength range by using volume Bragg gratings (VBG's) in an external cavity setup is reported. The LD operates in both the ground and excited states and the gratings give a dual-mode separation around each emission peak of 5 nm, which is suitable as a continuous wave (CW) optical pump signal for a terahertz (THz) photomixer device. The setup also generates dual modes around both 1180m and 1260 nm simultaneously, giving four simultaneous narrow linewidth modes comprising two simultaneous difference frequency pump signals. (C) 2011 American Institute of Physics. [doi:10.1063/1.3654154]

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