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

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

Research output: Contribution to journalArticle

7 Citations (Scopus)

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 1180 m and 1260 nm simultaneously, giving four simultaneous narrow linewidth modes comprising two simultaneous difference frequency pump signals.
Original languageEnglish
Article number171107
Number of pages3
JournalApplied Physics Letters
Volume99
DOIs
Publication statusPublished - 2011

Keywords

  • Bragg gratings
  • laser diodes
  • quantum-dot diode laster

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