Ultrafast Optical Properties of C<suB>70</suB> Thin Film

Chin. Phys. Lett.

1996, Vol. 13

Issue (9): 668-671 DOI:

Original Articles

Ultrafast Optical Properties of C₇₀ Thin Film

WANG Cong-fang;A1 Xi-cheng;XIA Zong-ju;ZOU Ying-hua;QIAN Jiang^*;QIAN Shi-xiong^*

Department of Physics, Mesoscopic Physics Laboratory, Peking University, Beijing 100871 ^*Department of Physics, fudan University, Shanghai 200433

Cite this article:

WANG Cong-fang, A Xi-cheng, XIA Zong-ju et al 1996 Chin. Phys. Lett. 13 668-671

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Abstract The relaxation of optically excited carrier in C₇₀ thin film fabricated by physical jet deposition was investigated by femtosecond pump-probe measurements. A transient decrease in transmission was observed indicating induced absorption. In comparison to C₆₀ thin film the initial response of C₇₀ film is laser pulse limited and the long lived component has smaller magnitude. The third order optical nonlinear susceptibility of C₇₀ thin film was determined to be x⁽³⁾ = 3.3 x 10^-11 esu by femtosecond time-resolved optical Kerr effect. From the primarily pulse limited response the dephasing time of C₇₀ thin film has been proved to be shorter than the laser pulse width.

Keywords: 42.65.-k 78.47.+p 78.66.-w

Published: 01 September 1996

PACS:	42.65.-k	(Nonlinear optics)
	78.47.+p
	78.66.-w	(Optical properties of specific thin films)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1996/V13/I9/0668

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	WANG Cong-fang
	A Xi-cheng
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	QIAN Jiang
	QIAN Shi-xiong

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