Alignment and orientation of nonpolar molecules utilizing the laser‐induced ac‐Stark effect

1994 ◽  
Vol 101 (11) ◽  
pp. 9384-9394 ◽  
Author(s):  
A. F. Linskens ◽  
N. Dam ◽  
J. Reuss ◽  
B. Sartakov
Keyword(s):  
Stark Effect ◽  
Ac Stark Effect ◽  
Nonpolar Molecules

Autler–Townes splitting and the AC Stark effect in nonpolar molecules: Prospects for all-optical alignment

2001 ◽  
Vol 79 (2-3) ◽  
pp. 547-559
Author(s):  
A M Lyyra ◽  
J Qi ◽  
F C Spano
Keyword(s):  
Stark Effect ◽  
Continuous Wave ◽  
Molecular System ◽  
Triple Resonance ◽  
Atomic Systems ◽  
Molecular Systems ◽  
All Optical ◽  
Optical Alignment ◽  
Ac Stark Effect ◽  
Nonpolar Molecules

This paper describes an extension of the familiar coherence effects from atomic systems to the molecular regime. Such effects are inherent in the interaction of multiple laser fields with molecular systems. We have observed Autler–Townes splitting and the AC Stark shift in diatomic Lithium using the continuous wave all-optical triple resonance (AOTR) techniques. By using the Autler–Townes effect, we have partially resolved the magnetic sublevels of a molecular rovibrational level in a Doppler broadened sample, allowing all-optical alignment of the angular momentum in excited states of nonpolar molecules. The Autler–Townes effect in a molecular system extends the rovibrational state selectivity of the AOTR excitation technique to magnetic sublevels. PACS Nos.: 33.40tf, 42.50Hz

Perturbative calculation of the ac Stark effect by the complex rotation method

1991 ◽  
Vol 43 (11) ◽  
pp. 6272-6283 ◽  
Author(s):  
Liwen Pan ◽  
K. T. Taylor ◽  
Charles W. Clark
Keyword(s):  
Stark Effect ◽  
Perturbative Calculation ◽  
Complex Rotation ◽  
Rotation Method ◽  
Ac Stark Effect

Anomalous transitions in two-level systems driven by the ac Stark effect

2001 ◽  
Vol 79 (2-3) ◽  
pp. 533-545 ◽  
Author(s):  
W L Meerts ◽  
I Ozier ◽  
J T Hougen
Keyword(s):  
Molecular Beam ◽  
Stark Effect ◽  
Electric Resonance ◽  
Avoided Crossing ◽  
Different Types ◽  
Two Level Systems ◽  
Experimental Findings ◽  
Ac Stark Effect ◽  
Unusual Type ◽  
Good Agreement

An unusual type of nonresonant absorption signal produced by the ac Stark effect has been observed in a two-level avoided-crossing system. The theory for these anomalous transitions has been developed. The nonresonant signals have been shown to be caused by the perturbation by the oscillating field of the dephasing of the two-level system at the avoided crossing. A series of measurements of these anomalous transitions has been carried out using the avoided-crossing molecular-beam electric-resonance technique. In addition, different types of resonant multiphoton transitions have been investigated. Results are reported for the AE-barrier anticrossing with J = 1 in CH3SiH3. The experimental findings are in good agreement with the theory developed. PACS Nos.: 33.20Bx, 33.80Be, 42.50Hz

scholarly journals Amplification of multi-gigawatt 3 ps pulses in an atmospheric CO_2 laser using ac Stark effect

2012 ◽  
Vol 20 (13) ◽  
pp. 13762 ◽  
Author(s):  
S. Ya. Tochitsky ◽  
J. J. Pigeon ◽  
D. J. Haberberger ◽  
C. Gong ◽  
C. Joshi
Keyword(s):  
Stark Effect ◽  
Ac Stark Effect

Modifying excitation transfer cross sections with an ac Stark effect

1988 ◽  
Vol 13 (5) ◽  
pp. 354 ◽  
Author(s):  
J. Coutts ◽  
J. Cooper ◽  
K. Burnett
Keyword(s):  
Cross Sections ◽  
Stark Effect ◽  
Excitation Transfer ◽  
Ac Stark Effect

Interference phenomena in two-photon transitions caused by laser-induced ac-Stark effect

1994 ◽  
Vol 72 (11-12) ◽  
pp. 1273-1283 ◽  
Author(s):  
A. F. Linskens ◽  
N. Dam ◽  
J. R. Reuss ◽  
B. Sartakov
Keyword(s):  
Stark Effect ◽  
Molecular State ◽  
Pump Laser ◽  
Probe Laser ◽  
Destructive Interference ◽  
Optical Bloch Equations ◽  
Two Photon ◽  
Photon Transition ◽  
Photon Excitation ◽  
Ac Stark Effect

A system is described in which a real molecular state is tuned into and out of resonance with the intermediate level of a two-photon transition, by the laser-induced ac-Stark effect. Two narrow-band CO2 wave-guide lasers are utilized to induce rovibrational transitions in the ν3 ladder of SF6. A weak probe laser monitors the absorption for the [Formula: see text] two-photon transition. Simultaneously, a strong pump laser is in resonance with the [Formula: see text] one-photon transition. The ac-Stark splitting is observed and quantum interferences between two-photon amplitudes involving different intermediate states occur. It is demonstrated that destructive interference allows suppression of the two-photon excitation for an appropriate pump laser power. Simulations based on the Dressed State Picture and the optical Bloch equations show a satisfactory agreement with the experiment.

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