Abstract

A 22× reduction in laser pump threshold and a 23× enhancement in energy conversion have been demonstrated on a second order distributed feedback (DFB) laser using a resonant optical pumping (ROP) technique. The ROP scheme couples the excitation light into a distinct resonant mode of the laser cavity through the illuminating at a specific resonant incident angle. Coupling excitation light into the resonant mode results in an enhanced near-field, which significantly increases pump absorption by the active medium. Consequently, high power conversion efficiency between pumping light and lasing emission is achieved and laser pump threshold power is reduced.

Original languageEnglish (US)
Pages (from-to)5086-5092
Number of pages7
JournalOptics Express
Volume19
Issue number6
DOIs
StatePublished - Mar 14 2011

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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