Ultrashort 1.5-μm laser excited upconverted stimulated emission based on simultaneous three-photon absorption

Guang S. He, Jianming Dai, Tzu Chau Lin, Przemyslaw P. Markowicz, Paras N. Prasad

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

Simultaneous three-photon excited stimulated emission at (cavityless lasing) ∼610 nm has been achieved in an organic chromophore solution pumped by ∼1.5-μm ultrashort coherent radiation. The stimulated emission can be observed only in the forward and backward directions and is characterized by its high directionality and spectral narrowing. The divergence angle for the backward stimulated emission is considerably smaller than that for the forward stimulated emission, which resembles optical phase conjugation.

Original languageEnglish
Pages (from-to)719-721
Number of pages3
JournalOptics Letters
Volume28
Issue number9
DOIs
StatePublished - 1 May 2003

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