Research output: Contribution to journal › Article › peer-review
Nonlinear spectroscopy of alkali atoms in cold medium of astrophysical relevance. / Efimov, Dmitry K.; Bruvelis, Martins; Bezuglov, Nikolai N.; Dimitrijević, Milan S.; Klyucharev, Andrey N.; Srećković, Vladimir A.; Gnedin, Yurij N.; Fuso, Francesco.
In: Atoms, Vol. 5, No. 4, 50, 01.12.2017.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Nonlinear spectroscopy of alkali atoms in cold medium of astrophysical relevance
AU - Efimov, Dmitry K.
AU - Bruvelis, Martins
AU - Bezuglov, Nikolai N.
AU - Dimitrijević, Milan S.
AU - Klyucharev, Andrey N.
AU - Srećković, Vladimir A.
AU - Gnedin, Yurij N.
AU - Fuso, Francesco
PY - 2017/12/1
Y1 - 2017/12/1
N2 - The time-dependent population dynamics of hyperfine (HF) sublevels of n2p3/2 atomic states upon laser excitation in a cold medium of alkali atoms is examined. We demonstrate some peculiarities of the absorption HF multiplet formation in D2-line resulting from a long interaction time (~200 μs) interaction between light and Na (n = 3) and Cs (n = 6) atoms in a cold and slow sub-thermal (T ~ 1K) beam. We analytically describe a number of D2-line-shape effects that are of interest in spectroscopic studies of cold dusty white dwarfs: broadening by optical pumping, intensity redistribution within components of D2-line HF multiplet for partially closed transitions and asymmetry of absorption lines induced by AC Stark shifts for cyclic transitions.
AB - The time-dependent population dynamics of hyperfine (HF) sublevels of n2p3/2 atomic states upon laser excitation in a cold medium of alkali atoms is examined. We demonstrate some peculiarities of the absorption HF multiplet formation in D2-line resulting from a long interaction time (~200 μs) interaction between light and Na (n = 3) and Cs (n = 6) atoms in a cold and slow sub-thermal (T ~ 1K) beam. We analytically describe a number of D2-line-shape effects that are of interest in spectroscopic studies of cold dusty white dwarfs: broadening by optical pumping, intensity redistribution within components of D2-line HF multiplet for partially closed transitions and asymmetry of absorption lines induced by AC Stark shifts for cyclic transitions.
KW - Alkali atoms
KW - Astrophysics
KW - Spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=85045387808&partnerID=8YFLogxK
U2 - 10.3390/atoms5040050
DO - 10.3390/atoms5040050
M3 - Article
AN - SCOPUS:85045387808
VL - 5
JO - Atoms
JF - Atoms
SN - 2218-2004
IS - 4
M1 - 50
ER -
ID: 36432548