Highly temperature insensitive quantum cascade lasers

Y. Bai*, N. Bandyopadhyay, S. Tsao, E. Selcuk, S. Slivken, M. Razeghi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

79 Scopus citations

Abstract

An InP based quantum cascade laser (QCL) heterostructure emitting around 5 μm is grown with gas-source molecular beam epitaxy. The QCL core design takes a shallow-well approach to maximize the characteristic temperatures, T 0 and T1, for operations above room temperature. A T 0 value of 383 K and a T1 value of 645 K are obtained within a temperature range of 298-373 K. In room temperature continuous wave operation, this design gives a single facet output power of 3 W and a wall plug efficiency of 16% from a device with a cavity length of 5 mm and a ridge width of 8 μm.

Original languageEnglish (US)
Article number251104
JournalApplied Physics Letters
Volume97
Issue number25
DOIs
StatePublished - Dec 20 2010

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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