Optical investigation of fast processes with new pulsed monochrome light source

Michael V. Guschin; Igor M. Dementjev; Nikolai P. Mende; Igor M. Olikhov; Alexander N. Gulchenko; Vladimir N. Ulasjuk

doi:10.1117/12.50548

1 January 1992 Optical investigation of fast processes with new pulsed monochrome light source

Michael V. Guschin, Igor M. Dementjev, Nikolai P. Mende, Igor M. Olikhov, Alexander N. Gulchenko, Vladimir N. Ulasjuk

Proceedings Volume 1539, Ultrahigh- and High-Speed Photography, Videography, and Photonics '91; (1992) https://doi.org/10.1117/12.50548
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

The emergence of lasers opened a new epoch in optical diagnostics of fast processes in many fields, and in gas dynamics in particular (holography, holographic and speckle interferometry, etc.). However, as to classical optical methods traditionally applied in gas dynamics, these new light sources, side by side with numerous advantages, have a certain demerit. High spatial coherency of a laser beam leads to the appearance of speckle structure in an image obtained with the help of interferometers or schlieren devices, which cannot be eliminated even with scatterer application. A new semiconductor laser with electron-beam pumping is free from such a demerit. Its quality and capabilities are illustrated by a flow pattern obtained at a ballistic range.

Citation Download Citation

Michael V. Guschin, Igor M. Dementjev, Nikolai P. Mende, Igor M. Olikhov, Alexander N. Gulchenko, and Vladimir N. Ulasjuk "Optical investigation of fast processes with new pulsed monochrome light source", Proc. SPIE 1539, Ultrahigh- and High-Speed Photography, Videography, and Photonics '91, (1 January 1992); https://doi.org/10.1117/12.50548

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