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Analytical studies of gain optimization in CO2-N2 gasdynamic lasers employing two-dimensional wedge nozzles

Shanmugasundaram, V and Reddy, NM (1983) Analytical studies of gain optimization in CO2-N2 gasdynamic lasers employing two-dimensional wedge nozzles. In: Pramana, 21 (2). pp. 131-148.

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Official URL: http://www.springerlink.com/content/31346017j85136...

Abstract

An analytical method has been proposed to optimise the small-signaloptical gain of CO2-N2 gasdynamic lasers (gdl) employing two-dimensional (2D) wedge nozzles. Following our earlier work the equations governing the steady, inviscid, quasi-one-dimensional flow in the wedge nozzle of thegdl are reduced to a universal form so that their solutions depend on a single unifying parameter. These equations are solved numerically to obtain similar solutions for the various flow quantities, which variables are subsequently used to optimize the small-signal-gain. The corresponding optimum values like reservoir pressure and temperature and 2D nozzle area ratio also have been predicted and graphed for a wide range of laser gas compositions, with either H2O or He as the catalyst. A large number of graphs are presented which may be used to obtain the optimum values of small signal gain for a wide range of laser compositions without further computations.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Springer India
Keywords: Gasdynamic laser;population inversion;small signal gain;area ratio;wedge nozzle
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering (Formerly, Aeronautical Engineering)
Date Deposited: 27 May 2009 12:06
Last Modified: 27 May 2009 12:06
URI: http://eprints.iisc.ernet.in/id/eprint/20278

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