High-power, continuous-wave, phase-locked quantum cascade laser arrays emitting at 8 μm

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

We report a room-temperature eight-element phase-locked quantum cascade laser array emitting at 8 μm with a high continuous-wave power of 8.2 W and wall plug efficiency of 9.5%. The laser array operates primarily via the in-phase supermode and has single-mode emission with a side-mode suppression ratio of ∼20 dB. The quantum cascade laser active region is based on a high differential gain (8.7 cm/kA) and low voltage defect (90 meV) design. A record high wall plug efficiency of 20.4% is achieved from a low loss buried ridge type single-element Fabry-Perot laser operating in pulsed mode at 20 °C.

Original languageEnglish (US)
Pages (from-to)15776-15785
Number of pages10
JournalOptics Express
Volume27
Issue number11
DOIs
StatePublished - Jan 1 2019

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Fingerprint Dive into the research topics of 'High-power, continuous-wave, phase-locked quantum cascade laser arrays emitting at 8 μm'. Together they form a unique fingerprint.

  • Cite this