Vol. 22, issue 04, article # 4

Zemlyanov A. A., Kabanov A. M., Matvienko G. G., Stepanov A. N., Bodrov S. B., Zakharov N. S., Kholod S. V. Influence of femtosecond Ti:Sa laser pulses on optical condensed media. // Optika Atmosfery i Okeana. 2009. V. 22. No. 04. P. 332-339 [in Russian].
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Experimental results of influence of Ti:Sapphire laser pulses with a duration of 50 fs on different types of optical materials are presented. Threshold levels of radiation pulse action on condensed media were determined; a character of surface degradation was investigated. Differences in evolution of the interaction processes of radiation pulses of femtosecond and nanosecond durations were shown. The results of these investigations can be used both for design of laser technique and development of new technologies of material processing. At the investigations, spectral-energy dependences of filamented laser pulse emission for various laser pulse energies were determined, as well as spectral characteristics of supercontinuum, formed at the output from transparent optical media. Prevalence of short-wave spectrum wing of a supercontinuum was shown for condensed media. Dependence of supercontinuum energy on incident radiation energy was determined.


laser radiation; self-focusing; filamentation; plasma