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Highly selective population of two excited states in nonresonant two-photon absorption |
Zhang Hui(张晖), Zhang Shi-An(张诗按)†, and Sun Zhen-Rong(孙真荣) |
State Key Laboratory of Precision Spectroscopy and Department of Physics, East China Normal University, Shanghai 200062, China |
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Abstract A nonresonant two-photon absorption process can be manipulated by tailoring the ultra-short laser pulse. In this paper, we theoretically demonstrate a highly selective population of two excited states in the nonresonant two-photon absorption process by rationally designing a spectral phase distribution. Our results show that one excited state is maximally populated while the other state population is widely tunable from zero to the maximum value. We believe that the theoretical results may play an important role in the selective population of a more complex nonlinear process comprising nonresonant two-photon absorption, such as resonance-mediated (2+1)-three-photon absorption and (2+1)-resonant multiphoton ionization.
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Received: 02 November 2010
Revised: 14 March 2011
Accepted manuscript online:
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PACS:
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32.80.Wr
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(Other multiphoton processes)
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42.65.Re
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(Ultrafast processes; optical pulse generation and pulse compression)
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32.80.Qk
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(Coherent control of atomic interactions with photons)
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Fund: Project partly supported by the Shanghai Leading Academic Discipline Project (Grant No. B408), the Science Foundation of the Ministry of Education of China (Grant No. 30800), the National Natural Science Fundation of China (Grant No. 11004060), and the Shanghai Municipal Science and Technology Commission (Grant Nos. 10XD1401800, 09142200501, 09ZR1409300, 09JC1404700, and 10JC1404500). |
Cite this article:
Zhang Hui(张晖), Zhang Shi-An(张诗按), and Sun Zhen-Rong(孙真荣) Highly selective population of two excited states in nonresonant two-photon absorption 2011 Chin. Phys. B 20 083202
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