Coexistence of gain and absorption

Research output: Contribution to journalLetter

Abstract

Scattering not only broadens the width of the optical transition between two levels but can enable optical gain and absorption to coexist — a fact that is unambiguously demonstrated by the observation of 'Bloch gain' in a quantum cascade laser.

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Subject classification (UKÄ) – MANDATORY

  • Condensed Matter Physics
Original languageEnglish
Pages (from-to)298-299
JournalNature Physics
Volume3
Publication statusPublished - 2007
Publication categoryResearch
Peer-reviewedYes