ADIABATIC POPULATION TRANSFER WITH FREQUENCY-SWEPT LASER-PULSES

Citation
Js. Melinger et al., ADIABATIC POPULATION TRANSFER WITH FREQUENCY-SWEPT LASER-PULSES, The Journal of chemical physics, 101(8), 1994, pp. 6439-6454
Citations number
64
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
ISSN journal
00219606
Volume
101
Issue
8
Year of publication
1994
Pages
6439 - 6454
Database
ISI
SICI code
0021-9606(1994)101:8<6439:APTWFL>2.0.ZU;2-H
Abstract
We present detailed experimental and theoretical results on population transfer with frequency-swept picosecond laser pulses. Here, we demon strate that intense frequency-swept pulses, when applied in the adiaba tic limit, lead to both more efficient and more selective excitation t han do unmodulated laser pulses. The experimental work is performed on quasi-two-level systems (pentacene/p-terphenyl crystal and Na vapor), quasi-three-level systems (Na vapor), and on more complex multilevel systems (I-2 vapor). We discuss the different characteristics of adiab atic population transfer in both few-level, and multilevel cases, and, in particular, present computer calculations to explore the effects o f molecular rotations in multilevel adiabatic population transfer.