Equation-of-state studies using a 10-Hz Nd: YAG laser oscillator

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. (2003) Equation-of-state studies using a 10-Hz Nd: YAG laser oscillator Laser and Particle Beams, 21 (4). pp. 615-626. ISSN 0263-0346

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Official URL: http://journals.cambridge.org/abstract_S0263034603...

Related URL: http://dx.doi.org/10.1017/S026303460321421X


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 [similar]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.

Item Type:Article
Source:Copyright of this article belongs to Cambridge University Press.
Keywords:Equation of State; Prepulse; Pressure Hugoniot
ID Code:11890
Deposited On:13 Nov 2010 13:42
Last Modified:02 Jun 2011 08:55

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