Spatial and temporal temperature distribution of ultrashort pulse induced heat accumulation in glass

Sören Richter; Fumiya Hashimoto; Felix Zimmermann; Yasuyuki Ozeki; Kazuyoshi Itoh; Andreas Tünnermann; Stefan Nolte

doi:10.1117/12.2078939

9 March 2015 Spatial and temporal temperature distribution of ultrashort pulse induced heat accumulation in glass

Sören Richter, Fumiya Hashimoto, Felix Zimmermann, Yasuyuki Ozeki, Kazuyoshi Itoh, Andreas Tünnermann, Stefan Nolte

Proceedings Volume 9355, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XV; 935515 (2015) https://doi.org/10.1117/12.2078939
Event: SPIE LASE, 2015, San Francisco, California, United States

Abstract

We report on the first direct measurements of the laser induced temperature distribution after the absorption of multiple ultrashort laser pulses at high repetition rates in borosilicate glass. To this end, we developed an in-situ micro Raman setup to determine the temperature dependent ratio between Stokes and Anti-Stokes scattering. The results indicate a critical influence of the pulse energy on the induced temperature.

In borosilicate glass, the maximal temperature directly after the excitation (pulse energy of 1100 nJ, repetition rate of 1 MHz, wavelength of 1044 nm, pulse duration of 600 fs, 2000 pulses per laser spot) is more than 5000 K and rapidly cools down within several hundreds of ns.

Citation Download Citation

Sören Richter, Fumiya Hashimoto, Felix Zimmermann, Yasuyuki Ozeki, Kazuyoshi Itoh, Andreas Tünnermann, and Stefan Nolte "Spatial and temporal temperature distribution of ultrashort pulse induced heat accumulation in glass", Proc. SPIE 9355, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XV, 935515 (9 March 2015); https://doi.org/10.1117/12.2078939

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