Controlling molecular orientation by laser pulses with two different envelope shapes

2021 ◽  
Author(s):  
Meiqi Guo ◽  
Min Zhou ◽  
Shuo Chai ◽  
Jie Yu
Keyword(s):  
Molecular Orientation ◽  
Laser Pulses

FIELD-FREE MOLECULAR ORIENTATION IN DISSIPATIVE MEDIA BY A COMBINATION OF FEMTOSECOND AND THz LASER PULSES

2013 ◽  
Vol 12 (03) ◽  
pp. 1350006 ◽  
Author(s):  
YONG LIU ◽  
JIAN LI ◽  
JIE YU ◽  
SHU-LIN CONG
Keyword(s):  
Liouville Equation ◽  
Delay Time ◽  
Molecular Orientation ◽  
Laser Pulses ◽  
Numerical Calculations ◽  
Orientation Degree ◽  
Carrier Envelope Phase ◽  
Theoretical Scheme ◽  
Dissipative Media ◽  
Dissipative Environment

We present a theoretical scheme for achieving the field-free molecular orientation in dissipative media by a combination of femtosecond and THz laser pulses. Numerical calculations are performed by solving the quantum Liouville equation based on multilevel Bloch model. The molecular orientation degree is sensitive to the carrier-envelope phase of the THz pulse and the delay time between the two pulses. The orientation and the rotational population of CO molecules in dissipative environment are computed at different pressures and temperatures. The influence of pure decoherence on the molecular orientation is also discussed.

Controlling field-free molecular orientation with combined single- and dual-color laser pulses

2011 ◽  
Vol 83 (4) ◽  
Author(s):  
Shian Zhang ◽  
Chenhui Lu ◽  
Tianqing Jia ◽  
Zugeng Wang ◽  
Zhenrong Sun
Keyword(s):  
Molecular Orientation ◽  
Laser Pulses ◽  
Dual Color

CONTROLLING THE ROTATIONAL DYNAMICS OF THE MOLECULAR ORIENTATION BY TWO TIME-DELAYED LASER PULSES

2011 ◽  
Vol 20 (03) ◽  
pp. 341-350 ◽  
Author(s):  
SHUWU XU ◽  
YUNXIA HUANG ◽  
XIANMING JI
Keyword(s):  
Time Delay ◽  
Molecular Orientation ◽  
Fourier Transforms ◽  
Transition Probability ◽  
Laser Pulses ◽  
Time Dependent ◽  
Rotational Period ◽  
Raman Transition ◽  
Relative Time ◽  
Rotational States

We show that the Raman transition probability can be manipulated by the relative time delay, the intensity ratio and the carrier-envelope phase between two time-delayed dual-color laser pulses. Our results indicate that when the second laser pulse is applied at half of the molecular rotational period, the contributions of the odd and the even rotational states are different. However, the two contributions are the same when the relative time delay is a full molecular rotational period. Time-dependent molecular orientation signals and their corresponding Fourier transforms validate the results.

Field-free molecular orientation induced by combined femtosecond single- and dual-color laser pulses: The role of delay time and quantum interference

2014 ◽  
Vol 23 (1) ◽  
pp. 013302
Author(s):  
Chao-Chao Qin ◽  
Guang-Rui Jia ◽  
Xian-Zhou Zhang ◽  
Yu-Fang Liu ◽  
Jin-You Long ◽  
...  
Keyword(s):  
Delay Time ◽  
Quantum Interference ◽  
Molecular Orientation ◽  
Laser Pulses ◽  
Dual Color

Field-Free Molecular Orientation Induced by Nonresonant Square Laser Pulses

2011 ◽  
Vol 28 (4) ◽  
pp. 043301 ◽  
Author(s):  
Shu-Wu Xu ◽  
Yun-Xia Huang ◽  
Xian-Ming Ji
Keyword(s):  
Molecular Orientation ◽  
Laser Pulses
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