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Lifetime‐Measurements of Selectively Excited Molecular Levels
Author(s) -
Bieniak B.,
Hinske H. P.,
Paulus H.,
Zevgolis D.,
Demtröder W.
Publication year - 1991
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.19915030103
Subject(s) - monochromator , excited state , atomic physics , laser , coincidence , dye laser , fluorescence , bandwidth (computing) , optics , photon , physics , materials science , telecommunications , wavelength , medicine , alternative medicine , pathology , computer science
A synchroneously pumped mode‐locked cavity‐dumped dye laser, which delivers nearly Fourier‐limited output pulses with 20 W peak power, 500 ps pulsewidth and 1.5 GHz spectral bandwidth is used to populate selected rovibronic levels in excited electronic states of alkali molecules. The laser induced fluorescence is filtered through a monochromator and the lifetimes of individual rovibronic levels are determined with the single photon delayed coincidence technique. The influence of different perturbations on the lifetimes is investigated and discussed.