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," Chin. Opt. Lett. 2, 06354 (2004)
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