Determination of the refractive index dispersion using multi-wavelength second-harmonic generation in an aperiodic LiTaO3 superlattice

Determination of the refractive index dispersion using multi-wavelength second-harmonic generation in an aperiodic LiTaO3 superlattice
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利用多波长二次谐波产生非周期 LiTaO3 超晶格测定折射率色散

DOI:
10.1088/0022-3727/42/5/055106
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发表时间:
2009-03
期刊:
Journal of Physics D: Applied Physics
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其他
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研究了非周期极化LiTaO3 超晶格中多波长二次谐波的产生。通过对相位匹配波长和温度的测量数据进行拟合,确定了LiTaO3晶体与温度相关的Sellmeier方程。该工作为测量非线性晶体的折射率及其色散提供了一种新方法,有利于准相位匹配技术的研究。
Multi-wavelength second-harmonic generation in an aperiodic poled LiTaO3 superlattice was studied. By fitting the measured data of phase-matching wavelengths and temperatures, the temperature-dependent Sellmeier equation of the LiTaO3 crystal has been determined. This work provides a new method to measure the refractive index of the nonlinear crystal and its dispersion and therefore, is of benefit to the study of the quasi-phase-matching technique.
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