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LiTaO3的高温拉曼光谱研究
LiTaO3晶体 高温拉曼光谱 相变
2012/4/10
利用显微共聚焦拉曼光谱技术研究了LiTaO3晶体在298～948 K温度范围内的拉曼光谱，通过对其高波数拉曼峰的分析，研究了LiTaO3的相变机制。研究发现，除466.7 cm-1峰外，LiTaO3的其余拉曼峰随着温度的升高向低波数方向明显频移;所有拉曼峰的半高宽随着温度的升高逐渐增加，同时拉曼峰的强度逐渐减弱;在933 K附近，LiTaO3的三个拉曼峰的消失，表明LiTaO3发生了从低温铁电相到...
Polarization-Reversal in Stoichiometric LiNbO3/LiTaO3 and Application to Optical Devices
Quasi-phase matching (QPM) LiTaO3 stoichiometry
2009/6/8
A polarization-reversed optical device has been attracting much attention as a next generation device due to its desinability and flexibility. Quasi-phase-matched (QPM) wavelength converters using pol...
Phase Velocity Estimation of a Microstrip Line in a Stoichiometric Periodically Domain-Inverted LiTaO3 Modulator Using Electro-Optic Sampling Technique
Electro-Optic Sampling Technique
2008/10/31
We estimate the phase velocity of a modulation microwave in a quasi-velocity-matched (QVM) electro-optic (EO) phase modulator (QVM-EOM) using EO sampling which is accurate and the most reliable techni...