Chinese Optics Letters, Volume. 2, Issue 6, 06354(2004)
Measurement of the third order nonlinear optical coefficients of GaP and chirp parameter of laser pulse
The spectral resolved femtosecond pump-probe experiment is applied to measure the third order nonlinear refractive index coefficient, two-photon absorption coefficient of GaP crystal, and the chirp parameter of the input laser pulses. The results show that nonlinear refractive index coefficient is 2*10^(-18) m2/W, two-photon absorption coefficient is 2*10^(-11) m/W at wavelength of 783.5 nm, and the chirp parameter of laser pulse is 1*10^(25) s^(-2). Furthermore, the mechanism of nonlinear refraction due to two-photon absorption in GaP crystal and experimental results are discussed.
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Haiyu Sang, Weijiang Wang, Jie Lin, Zhiren Qiu, Jianying Zhou. Measurement of the third order nonlinear optical coefficients of GaP and chirp parameter of laser pulse[J]. Chinese Optics Letters, 2004, 2(6): 06354
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