Measurement of laser-induced refractive index change of inverted ferroelectric domain LiNbO_(3)

Yunlin Chen; S. W. Liu; Dongdong Wang; Tianlin Chen; Min Xiao

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Measurement of laser-induced refractive index change of inverted ferroelectric domain LiNbO_(3)

机译：反向铁电畴LiNbO_（3）的激光诱导折射率变化的测量

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Optical nonlinearities of periodically poled LiNbO_(3) crystals were investigated by the single beam Z-scantechnique with a continuous wave (cw) laser beam at 532 nm. The nonlinear optical absorption coefficient and refractive index change are determined to be 8.1 X 10~(-6) cm/W and 2.6 X 10~(-4) at 0.5 MW/cm~(2) light intensity, respectively. Both sign and magnitude of the measured refractive nonlinearity are considerably different from the Z-scan results in congruent LiNbO_(3). The nonlinearities in the periodically poled LiNbO_(3) induced by 532 nm continuous waves are believed to be mainly due to the photorefractive effect.

机译：周期性极化的LiNbO_（3）晶体的光学非线性是通过单束Z-扫描技术和连续波（cw）激光束在532 nm处研究的。在0.5 MW / cm〜（2）的光强度下，其非线性光学吸收系数和折射率变化分别确定为8.1 X 10〜（-6）cm / W和2.6 X 10〜（-4）。 LiNbO_（3）一致时，所测量的折射非线性的正负号和幅度与Z扫描结果都大不相同。据信由532 nm连续波引起的周期性极化LiNbO_（3）中的非线性主要是由于光折射效应引起的。

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《Applied optics》 |2007年第31期|共4页
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Yunlin Chen; S. W. Liu; Dongdong Wang; Tianlin Chen; Min Xiao;
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1. Measurement of laser-induced refractive index change of inverted ferroelectric domain LiNbO_(3) [J] . Yunlin Chen, S. W. Liu, Dongdong Wang, Applied optics . 2007,第31期

机译：反向铁电畴LiNbO_（3）的激光诱导折射率变化的测量
2. Measurement of laser-induced refractive index change of inverted ferroelectric domain LiNbO_(3) [J] . Yunlin Chen, S. W. Liu, Dongdong Wang, Applied optics . 2007,第31期

机译：反向铁电畴LiNbO_（3）的激光诱导折射率变化的测量
3. Measurement of laser-induced refractive index change of inverted ferroelectric domain LiNbO_3 [J] . Yunlin Chen, S. W. Liu, Dongdong Wang, Applied Optics . 2007,第31期

机译：反向铁电畴LiNbO_3的激光诱导折射率变化的测量
4. Measurement of fs laser-induced refractive index changes using an integrated optical interferometer [C] . Matthias Will, Jonas Burghoff, Stefan Nolte, Commercial and Biomedical Applications of Ultrafast Lasers III . 2003

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Measurement of laser-induced refractive index change of inverted ferroelectric domain LiNbO_(3)

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