Use of lasers in the investigation of radiation-induced processes in the ionic crystals

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


In the study of F-H pair formation in alkali halides due to excitation of the electronic subsystem, the information of short life time states of the self-trapped excitons plays an important role. In this paper we present recent achievements in such a direction obtained by using lasers. Short pulses of laser radiation are used in the measurement of transient absorption spectra obtained by band-to-band excitation and by selective optical conversion of the short-lived defects. With nanosecond luminescence spectroscopy in double-cascade excitation, we acquired data for KJ explaining the evolution π 1 and π 2 luminescence bands at different power laser pulses. We interpret these data in terms of frequent mutual transitions between 'on-' and 'off-center' equilibrium states of self-trapped excitons. The processes of energy transfer in self-trapped excitons connected with monomers of impurity ions in mixed crystal are studied. Also, impurity recombination luminescence is investigated in fractional annealing of V k centers at 80-200 K. It is shown that luminescence intensity of heteronuclear excitons correlates with number of own but not with heteronuclear V k centers. Impurity luminescence in these crystals occur at exciton with core of Cl 2 type conversion to heteronuclear exciton.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Number of pages6
Publication statusPublished - 1995
EventInternational Conference on Atomic and Molecular Pulsed Lasers - Tomsk, Russia
Duration: 27 Mar 199530 Mar 1995


OtherInternational Conference on Atomic and Molecular Pulsed Lasers
CityTomsk, Russia

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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