Study of excited-state absorption of C<sub>70</sub>/toluene solution using time-resolved non-degenerate pump-probe system

Zhang Lei; Li Zhongguo; Nie Zhongquan; Yang Junyi; Song Yinglin

doi:10.3788/HPLPB20132502.0495

Volume 25 Issue 02

Dec. 2012

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Article Navigation > High Power Laser and Particle Beams > 2013 > 25(02): 495-499

Cai Chuanxiong, Liu Hongxi, Zhang Xiaowei, et al. Influence of powder feeding angle on geometric parameters of laser-clad Fe-based composite coating[J]. High Power Laser and Particle Beams, 2013, 25: 1359-1364. doi: 10.3788/HPLPB20132506.1359

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Zhang Lei, Li Zhongguo, Nie Zhongquan, et al. Study of excited-state absorption of C₇₀/toluene solution using time-resolved non-degenerate pump-probe system[J]. High Power Laser and Particle Beams, 2013, 25: 495-499. doi: 10.3788/HPLPB20132502.0495

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Study of excited-state absorption of C₇₀/toluene solution using time-resolved non-degenerate pump-probe system

doi: 10.3788/HPLPB20132502.0495

1.
School of Physical Science and Technology,Soochow University,Suzhou 215006,China;
2.
Department of Physics,Harbin Institute of Technology,Harbin 150001,China;
3.
Eoplly New Energy Technology Co Ltd,Nantong 226612,China

Received Date: 2012-05-28
Rev Recd Date: 2012-09-26
Publish Date: 2013-02-10

Abstract

Abstract

The excited-state nonlinearities of the C70/toluene solution are studied using a time-resolved non-degenerate pump-probe system. The 532 nm laser beam with 21 ps duration is used as the excitation and the laser beam of 600 nm with 10 ps duration is used for probing. The parameters associated with the five-energy-level model are evaluated by numerically simulation based on the non-degenerate pump-probe theory. The experimental results demonstrate that the lifetime of the excited state remains unchanged under non-degenerate condition, but the absorption cross section of the first excited state decreases with probe beam wavelength increase.
- excited-state absorption,
- pump-probe,
- non-degenerate,
- five-energy-level model

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