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

Autor:	LIU, YONG, LI, JIAN, YU, JIE, CONG, SHU-LIN
Předmět:	MOLECULAR orientation ENERGY dissipation MATHEMATICAL combinations FEMTOSECOND pulses NUMERICAL calculations LIOUVILLE'S theorem
Zdroj:	Journal of Theoretical & Computational Chemistry; May2013, Vol. 12 Issue 3, p-1, 11p, 6 Graphs
Abstrakt:	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. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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