Title :
Shock waves generated by intense femtosecond lasers
Author_Institution :
Dept. of Phys. & Astron., British Columbia Univ., Vancouver, BC, Canada
Abstract :
Summary form only given. To examine the basic properties of shock waves generated by intense femtosecond lasers, we use a one-dimensional hydrodynamic code which is coupled to an electromagnetic wave solver. The latter is used to treat the coupling of the pump laser radiation to the sample and the interaction of an optical probe with the shock wave. Calculations have been made for a pump laser with a wavelength of 400 nm, pulse length of 120 fs (FWHM) and irradiances ranging from 10/sup 14/-10/sup 16/ W/cm/sup 2/. Aluminum is used as a material standard in our calculations because it is a simple metal and there is a relatively broad knowledge of its physical properties, both theoretically and experimentally. To describe the plasma and shock states produced, we use the quotidian equation of state QEOS and conductivities derived from the dense plasma model of Lee and More. Thermal equilibriation between electrons and ions is treated in a conduction-relaxation model.
Keywords :
plasma production by laser; plasma shock waves; 400 nm; Al; conduction-relaxation model; dense plasma model; electromagnetic wave solver; intense femtosecond lasers; one-dimensional hydrodynamic code; optical probe; plasma; pump laser radiation; quotidian equation of state; shock states; shock wave generation; thermal equilibriation; Electromagnetic coupling; Hydrodynamics; Laser excitation; Optical coupling; Plasma density; Plasma materials processing; Plasma properties; Pump lasers; Shock waves; Ultrafast optics;
Conference_Titel :
Plasma Science, 2000. ICOPS 2000. IEEE Conference Record - Abstracts. The 27th IEEE International Conference on
Conference_Location :
New Orleans, LA, USA
Print_ISBN :
0-7803-5982-8
DOI :
10.1109/PLASMA.2000.854855
