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Optoacoustic study of laser-induced near-critical states of thin aluminum films |
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| Authors: | A. A. Karabutov A. G. Kaptilniy A. Yu. Ivochkin D. M. Ksenofontov A. D. Trofimov |
| Affiliation: | 1. International Laser Center, Moscow State University, Moscow, 119991, Russia 2. Institute of Problems of Laser and Information Technologies, Russian Academy of Sciences, ul. Svyatoozerskaya 1, Shatura, Moscow oblast, 140700, Russia 3. Joint Institute for High Temperatures, Russian Academy of Sciences, ul. Izhorskaya 13/2, Moscow, 125412, Russia 4. Prokhorov General Physics Institute, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991, Russia 5. Department of General Physics and Wave Processes, Faculty of Physics, Moscow State University, Moscow, 119991, Russia |
| Abstract: | The results of the optoacoustic study of aluminum states within a temperature range of 3–14 kK and a pressure range of 0.1–4 kbar were considered. These high-energy states were achieved by heating a submicron metal film confined by a transparent dielectric via nanosecond laser pulses with a fluence of up to 11 J/cm2. The dynamics of the temperature, pressure, and reflectivity of aluminum was studied at a nanosecond time resolution. |
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