Chalcogenide glasses are amorphous materials which include one of the chalcogen elements of the periodic table: S, Se and Te. These glasses have special optical properties: a high refractive index, broad transparency windows from visible to middle-infrared wavelengths, pronounced optical nonlinearities, and a broad portfolio of photo-sensitivity effects. These properties make chalcogenide glasses an attractive platform for all-optical signal processing at the device level (among other applications).
Our group is interested in developing new processes for the fabrication of waveguides based on chalcogenide glasses, such as direct laser-beam writing, wet-etching, and deposition of glass within pre-defined trenches in other substrates. We also study nonlinear propagation and opto-mechanical coupling effects in such waveguides. Examples include a demonstration of stimulated Brillouin scattering and the fabrication of high-quality resonators in planar waveguides fabricated through direct laser-beam writing.

Research topic 4
Research topic 4

• S. Levy, M. Klebanov, and A. Zadok, "High-Q ring resonators directly written in As2S3 chalcogenide glass films," Photon. Res. 3, 63-67 (2015)
• S. Levy, V. Lyubin, M. Klebanov, J. Scheuer, and A. Zadok, "Stimulated Brillouin scattering amplification in centimeter-long directly written chalcogenide waveguides," Opt. Lett. 37, 5112-5114 (2012).

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