Cold shock waves in semiconductors and insulators
Abstract
It is proposed that ultrahigh density shock waves could be generated in solids by inducing changes in the lattice constant upon laser irradiation. Moreover, for appropriately chosen semiconductors and insulators the initial shock is cold in that the laser energy is converted directly into the compression, with no thermal energy generated initially. Density amplification factors in the hundreds corresponding to transient pressures of gigabars, could be obtained by picosecond, 1-mJ laser pulses. With smaller laser peak powers, the lattice constant variation may be exploited to generate picosecond optoacoustic pulses.
- Publication:
-
Journal of Applied Physics
- Pub Date:
- April 1989
- DOI:
- Bibcode:
- 1989JAP....65.2998D
- Keywords:
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- Equations Of State;
- Insulators;
- Laser Outputs;
- Semiconductors (Materials);
- Shock Waves;
- Ultrashort Pulsed Lasers;
- Metal Films;
- Neodymium Lasers;
- Picosecond Pulses;
- Thin Films;
- Yag Lasers;
- Engineering (General)