Abstract

We report the first observation of a nonlinear process in a chalcogenide microresonator. Raman scattering and stimulated Raman scattering leading to laser oscillation is observed in microspheres made of ${\mathrm{As}}_2{\mathrm{S}}_3$. The coupled pump power threshold is as low as 13 μW using a pump wavelength of 1550 nm. The quality factor of the chalcogenide microresonator is also the highest ever reported with $Q>7\times {10}^7$.

© 2013 Optical Society of America

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