Optical investigation of laser interaction with materials

Y. H. Jin; R. J. Chen; S. J. Shaw; David C. Emmony

doi:10.1117/12.182084

5 August 1994 Optical investigation of laser interaction with materials

Y. H. Jin, R. J. Chen, S. J. Shaw, David C. Emmony

Proceedings Volume 2321, Second International Conference on Optoelectronic Science and Engineering '94; (1994) https://doi.org/10.1117/12.182084
Event: Optoelectronic Science and Engineering '94: International Conference, 1994, Beijing, China

Abstract

The interaction of high power infra-red laser radiation with matter can give rise to many interesting phenomena which have attracted considerable attention since the development of the laser. The type of phenomena which occurs can be divided into two classes depending upon whether laser energy absorption has occured or not. Examples of where absorption occurs include water at 10.6 .tm as produced by a CO2 laser. In this case, for low laser energies the interaction takes place via a thermoelastic mechanism resulting in volume expansion followed by a number of acoustic effects. At higher laser energy densities above the vaporization threshold of the liquid, the absorption of energy may give rise to a vapour cavity and the formation of microbubbles in the liquid. This process may be followed by vapour breakdown ifthe energy density is high enough.

Citation Download Citation

Y. H. Jin, R. J. Chen, S. J. Shaw, and David C. Emmony "Optical investigation of laser interaction with materials", Proc. SPIE 2321, Second International Conference on Optoelectronic Science and Engineering '94, (5 August 1994); https://doi.org/10.1117/12.182084

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