Direct liquid cooling of room-temperature operated quantum cascade lasers

J. Z. Chen, Z. Liu, Y. S. Rumala, D. L. Sivco, Claire F. Gmachl

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


A compact packaging module for direct liquid cooling of room-temperature quantum cascade lasers is implemented. The light was coupled out of the hermetically sealed package through a mid-infrared fibre epoxy-bonded to the laser. The threshold current reduces by ∼10%, compared to convectional substrate-side cooled lasers when using low boiling temperature (boiling point (b.p.)=34°C) 3M HFE-7000 coolant. No reduction was observed with high boiling point 3M FC-77 (b.p.=97°C) coolant.

Original languageEnglish (US)
Pages (from-to)534-535
Number of pages2
JournalElectronics Letters
Issue number9
StatePublished - 2006

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering


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