Equation-of-state studies using a 10-Hz Nd:YAG laser oscillator
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Published:2003-10
Issue:4
Volume:21
Page:615-626
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ISSN:0263-0346
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Container-title:Laser and Particle Beams
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language:en
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Short-container-title:Laser Part. Beams
Author:
SHUKLA M.,UPADHYAY A.,SENECHA V.K.,KHARE P.,BANDYAOPADHYAY S.,RAI V.N.,NAVATHE C.P.,PANT H.C.,KHAN M.,GODWAL B.K.
Abstract
A commercial mode locked cavity dumped Nd:YAG dye laser operating at
10 Hz repetition rate is modified to produce a high contrast
(>5000:1) single laser pulse while maintaining the energy stability
and high beam quality. A trigger generator biases the cavity dumping
photodiode, which is triggered externally by a pulse from the
microprocessor-based control unit controlling a ∼2 J/200 ps
laser chain. In the laser chain, the high contrast (>5000:1) is
achieved by an external pulse selector based on single Pockel's
cell to select a single laser pulse of high contrast, which is a
prerequisite for experimental study of the equation of state.
Laser-induced shock velocity measurement in thin aluminum, gold on
aluminum, and copper on aluminum foil targets using this modified laser
system are also presented. The equation of state of Al, Au, and Cu
obtained using an impedance matching technique are in agreement with
the reported results of SESAME and simulation results.
Publisher
Hindawi Limited
Subject
Electrical and Electronic Engineering,Condensed Matter Physics,Atomic and Molecular Physics, and Optics
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