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CARS diagnostics for practical combust ion measurements

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Abstract

In this era of energy shortage and environmental concern, improved understanding and control of combustion are becoming increasingly important. The application of laser spectroscopy to the hostile, yet easily perturbed, environments characteristic of combustion is anticipated to afford considerable advances in combustion science and technology in the coming years.1 Of the various laser approaches, coherent anti-Stokes Raman spectroscopy (CARS) appears among the most promising for the remote spatially and temporally precise probing of combustion processes due to its large signal conversion efficiency and coherent nature. Over the last several years, development of CARS has progressed at our laboratory2 and others from simple flames of Increasing complexity3 to practical application in internal combustion engines, simulations of gas turbine combustors,4 and afterburning jet engine exhausts.5 CARS will be described and its application to measurement of temperature and concentration in a variety of combustion systems and molecular species will be illustrated.

© 1983 Optical Society of America

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