Formation of micromodifications in a KDP crystal irradiated by tightly focused femtosecond visible laser pulses

The formation of micromodifications in the bulk of a KDP crystal irradiated by tightly focused 600-nm, 100-fs and 200-fs, 0.02-10 {mu}J femtosecond laser pulses is studied. A theoretical model describing the initial stage of formation of a plasma channel taking into account field ionisation and heat...

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Veröffentlicht in:	Quantum electronics (Woodbury, N.Y.) N.Y.), 2005-07, Vol.35 (7), p.627-632
Hauptverfasser:	Gordienko, Vyacheslav M, Makarov, Ivan A, Mikheev, Pavel M, Syrtsov, Vladimir S, Shashkov, Alexander A
Format:	Artikel
Sprache:	eng
Schlagworte:	ATOMIC AND MOLECULAR PHYSICS CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY CRYSTALS ELECTROMAGNETIC RADIATION ELECTRON TEMPERATURE ELECTRONS ELEMENTARY PARTICLES ENERGY RANGE EV RANGE FERMIONS HEATING IONIZATION LASER RADIATION LEPTONS PLASMA HEATING PLASMA PRODUCTION PULSES RADIATION EFFECTS RADIATIONS
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Zusammenfassung:	The formation of micromodifications in the bulk of a KDP crystal irradiated by tightly focused 600-nm, 100-fs and 200-fs, 0.02-10 {mu}J femtosecond laser pulses is studied. A theoretical model describing the initial stage of formation of a plasma channel taking into account field ionisation and heating of the electron component of the plasma is proposed. The laser pulse intensity (10{sup 13} W cm{sup -2}), the electron concentration (10{sup 20} cm{sup -3}) and the average electron temperature (5 eV) in the plasma channel are estimated. (interaction of laser radiation with matter. laser plasma)
ISSN:	1063-7818 1468-4799
DOI:	10.1070/QE2005v035n07ABEH008970