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Optical Phenomena and Processes Induced by Ultrashort Light Pulses in Chalcogenide and Chalcohalide Glassy Semiconductors

Abstract : Time-resolved microscopy study of ablation with femtosecond laser pulses in chalcohalide glass and crystal silicon is presented. The laser pulse energy is deposited into the near-surface layer due to two-photon absorption. The superheated liquid is ejected from the ablation spot under the action of supersonic blast wave. Glass-forming process in chalcohalide glass creates optically smooth spherical surface of the crater due to the action of surface tension forces. As a result, single laser pulse produces microlens, which can be transformed into micromirrors after metal sputtering. The fabricated microoptical elements demonstrate diffraction-limited performance.
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-01671250
Contributor : Laurent Jonchère <>
Submitted on : Friday, December 22, 2017 - 10:14:42 AM
Last modification on : Friday, July 10, 2020 - 4:22:38 PM

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I. Blonskyi, V. Kadan, A. Rybak, S. Pavlova, Laurent Calvez, et al.. Optical Phenomena and Processes Induced by Ultrashort Light Pulses in Chalcogenide and Chalcohalide Glassy Semiconductors. Journal of Nano and Electronic Physics, Sumy State University (Sumy, Ukraine), 2017, 9 (5), pp.05033. ⟨10.21272/jnep.9(5).05033⟩. ⟨hal-01671250⟩

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