Stimulated Brillouin scattering amplification in centimeter-long directly written chalcogenide waveguides

Shahar Levy, Victor Lyubin, Matvei Klebanov, Jacob Scheuer, Avi Zadok*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Stimulated Brillouin scattering (SBS) amplification is obtained in directly written As2S3 channel waveguides. Centimeter-long waveguides were written using a Ti:sapphire femtosecond laser, operating at a central wavelength of 810 nm. The cross-section of the waveguides was of 4 μm × 1 μm. A Brillouin frequency shift of 7.5 GHz is observed, in general agreement with corresponding previous studies. The SBS gain spectrum in the short waveguides is comparatively broad, with a full width at half-maximum of 200 MHz. We attribute the broad linewidth to the spatial evolution of the electromagnetic field profile along the waveguide.

Original languageEnglish
Pages (from-to)5112-5114
Number of pages3
JournalOptics Letters
Volume37
Issue number24
DOIs
StatePublished - 15 Dec 2012

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