Sampled grating, distributed feedback quantum cascade lasers with broad tunability and continuous operation at room temperature

Steven Boyd Slivken*, N. Bandyopadhyay, S. Tsao, S. Nida, Y. Bai, Quanyong Lu, Manijeh Razeghi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

73 Scopus citations

Abstract

A dual-section, single-mode quantum cascade laser is demonstrated in continuous wave at room temperature with up to 114 nm (50 cm -1) of tuning near a wavelength of 4.8 μm. Power above 100 mW is demonstrated, with a mean side mode suppression ratio of 24 dB. By changing the grating period, 270 nm (120 cm -1) of gap-free electrical tuning for a single gain medium has been realized.

Original languageEnglish (US)
Article number261112
JournalApplied Physics Letters
Volume100
Issue number26
DOIs
StatePublished - Jun 25 2012

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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