Spectral narrowing of Yb:YAG waveguide lasers through hybrid integration with ultrafast laser written Bragg gratings

P. Dekker, M. Ams, T. Calmano, S. Gross, C. Kränkel, G. Huber, M. J. Withford

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Laser written waveguides in crystalline materials can be used to make highly efficient, high gain lasers. The bi-directional emission from such lasers however is typically broadband with poor spectral control. Hybridizing a tapered, mode matched laser written Bragg grating with a broadband Yb:YAG crystalline waveguide laser, we demonstrate single longitudinal mode output from one end of the device. Careful control of the grating characteristics led to laser thresholds below 90 mW, slope efficiencies greater than 42% and output powers greater than 20 mW.

Original languageEnglish
Pages (from-to)20195-20202
Number of pages8
JournalOptics Express
Volume23
Issue number15
DOIs
Publication statusPublished - 27 Jul 2015

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