Room temperature continuous wave operation of quantum cascade lasers with watt-level optical power

Y. Bai*, S. R. Darvish, S. Slivken, W. Zhang, A. Evans, J. Nguyen, M. Razeghi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

158 Scopus citations

Abstract

We demonstrate quantum cascade lasers at an emitting wavelength of 4.6 μm, which are capable of room temperature, high power continuous wave (cw) operation. Buried ridge geometry with a width of 9.8 μm was utilized. A device with a 3 mm cavity length that was epilayer-down bonded on a diamond submount exhibited a maximum output power of 1.3 W at room temperature in cw operation. The maximum output power at 80 K was measured to be 4 W, with a wall plug efficiency of 27%.

Original languageEnglish (US)
Article number101105
JournalApplied Physics Letters
Volume92
Issue number10
DOIs
StatePublished - 2008

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Room temperature continuous wave operation of quantum cascade lasers with watt-level optical power'. Together they form a unique fingerprint.

Cite this