Line shape and strength of two-photon absorption in an atomic vapor with a resonant or nearly resonant intermediate state

1976 ◽  
Vol 14 (2) ◽  
pp. 751-760 ◽  
Author(s):  
J. E. Bjorkholm ◽  
P. F. Liao
Keyword(s):  
Intermediate State ◽  
Line Shape ◽  
Photon Absorption ◽  
Atomic Vapor ◽  
Two Photon Absorption ◽  
Two Photon

The controllable amplitude and shape of hyperfine spectra in a ladder-type three-level atomic system

2021 ◽  
pp. 2150098
Author(s):  
Huan-Qin Gao ◽  
Xiang-An Yan ◽  
Yu-Jing Han ◽  
Wan-Ting Xu ◽  
Kang Zhou
Keyword(s):  
Line Shape ◽  
Atomic System ◽  
Photon Absorption ◽  
Atomic Vapor ◽  
Probe Field ◽  
Vapor Cell ◽  
Coupling Field ◽  
Two Photon Absorption ◽  
Two Photon ◽  
State Formula

We report experimentally the properties of the hyperfine spectra in [Formula: see text]–[Formula: see text]–[Formula: see text] transitions of [Formula: see text]Rb. When the frequency of the coupling field is fixed between [Formula: see text]–[Formula: see text] transition and the probe scans the [Formula: see text]–[Formula: see text] transitions, two-photon absorption (TPA) and electromagnetically induced transparent (EIT) peaks could be investigated simultaneously, and the amplitude of the peaks can be controlled by changing the temperature of rubidium atomic vapor cell and the probe field power. In particular, the probe field power plays a dual role in controlling the amplitude of the peaks. In the [Formula: see text]–[Formula: see text]–[Formula: see text] transitions with the open intermediate state [Formula: see text], with decrease of the coupling field power, our experimental results show a crossover from a convoluted line-shape to EIT when the probe is weak whereas a transformation from a convoluted line-shape to TPA with an enhanced probe power. Formation of the convoluted line-shape is explained by virtue of the dressed energy-level diagram.

Modeling of non-Lorentzian two-photon absorption line shape in dipolar chromophore

2010 ◽  
Author(s):  
Aleks K. Rebane ◽  
Mikhail Drobizhev ◽  
Nikolay S. Makarov ◽  
Erich Beuerman ◽  
Christoph Nacke ◽  
...  
Keyword(s):  
Absorption Line ◽  
Line Shape ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Absorption Line Shape

Studies on the two-photon absorption properties of trigonal dehydrobenzo[18]annulenes

2004 ◽  
Vol 82 (7) ◽  
pp. 1172-1178 ◽  
Author(s):  
Xin Zhou ◽  
Ai-Min Ren ◽  
Ji-Kang Feng ◽  
Xiao-Juan Liu
Keyword(s):  
Dipole Moment ◽  
Cross Section ◽  
Intermediate State ◽  
Density Functional ◽  
Transition Dipole Moment ◽  
Photon Absorption ◽  
Absorption Properties ◽  
Transition Dipole ◽  
Two Photon Absorption ◽  
Two Photon

The one-photon and two-photon absorption properties of donor–acceptor substituted dehydrobenzo[18]annulenes were determined by using density functional theory and ZINDO methods. The macrocycle containing C2v symmetry exhibited the largest TPA cross-section value of 3376 × 10–50 cm4 s/photon. The calculated results indicate that the TPA response in the whole molecule comes from the contribution of that in the every side in the trigon. It is notable that the magnitudes of the transition dipole moment from the virtual intermediate state to the TPA final state and the dipole moment difference between the ground state and the virtual intermediate state play important roles in increasing the TPA cross-section value. This series of molecules can circumvent the trade-off between efficiency and transparency, and they provide a promising direction for the further development of novel two-dimensional molecules with such properties.Key words: two-photon absorption, ZINDO, sum-over-states, dehydrobenzo[18] annulenes, transparency.

Modeling non-Lorentzian two-photon absorption line shape in dipolar chromophores

2010 ◽  
Vol 130 (6) ◽  
pp. 1055-1059 ◽  
Author(s):  
Aleksander Rebane ◽  
Mikhail A. Drobizhev ◽  
Nikolay S. Makarov ◽  
Erich Beuerman ◽  
Christoph Nacke ◽  
...  
Keyword(s):  
Absorption Line ◽  
Line Shape ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Absorption Line Shape

Absolute two-photon absorption line shape in ZnTe

1979 ◽  
Vol 19 (2) ◽  
pp. 1049-1053 ◽  
Author(s):  
I. M. Catalano ◽  
A. Cingolani
Keyword(s):  
Absorption Line ◽  
Line Shape ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Absorption Line Shape
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