Room-temperature gain at 1.3 μm in PbS-doped glasses

K. Wundke, J. Auxier, A. Schülzgen, N. Peyghambarian, N. F. Borrelli

Research output: Contribution to journalArticlepeer-review

85 Scopus citations


We report on room-temperature optical gain at the ground exciton transition of PbS quantum-dot-doped glasses while optical pumping into the next-higher exciton resonance. The material gain in the quantum dots is as large as 80 cm-1. The dot-size selective excitation provides tunability of the optical gain. This is demonstrated by tuning the gain from 1317 to 1352 nm by changing the pump wavelength from 900 to 980 nm.

Original languageEnglish (US)
Pages (from-to)3060-3062
Number of pages3
JournalApplied Physics Letters
Issue number20
StatePublished - Nov 15 1999

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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