摘要
在电磁波谱中所处的特殊位置使得THz波在物理、化学、生物医学、电子科学、材料科学、环境监测等领域有着广泛的应用前景。讨论了THz时域频谱技术的若干关键问题:THz发射晶体的双光子吸收、衍射效应和非线性效应(Kerr效应和类Kerr效应)等对THz产生效率的影响,THz辐射脉冲的载波包络相位差,THz小波变换频谱技术,以及利用光子晶体光纤飞秒激光作为激发源对THz时域频谱系统进行小型化和提高能量的方案。
Due to its unique position in the electromagnetic spectrum, THz wave has many potential applications in physics, chemistry, biomedical science, electronics, materials science, and environment monitoring. An overview of our studies of several effects in THz time domain spectroscopy and of the properties of THz microstructured devices is presented. On the one hand, several important effects that are important for THz time domain spectroscopy are discussed： two-photon absorption, diffraction effect, and nonlinear effects （Kerr effect and Kerr-like effect） that affect the efficiently of the THz emitter; carrier-envelope phase offset of THz wave; and THz wavelet transform technique. A compact THz time domain spectroscopy system pumped by a femtosecond photonic crystal fiber laser is demonstrated.
出处
《中国电子科学研究院学报》
2009年第3期255-262,共8页
Journal of China Academy of Electronics and Information Technology
基金
国家重点基础研究计划(2007CB310408)
教育部博士点基金项目(200800560026)
天津市科技支撑专项基金(08ZCKFZC28000)
天津市国际合作项目(07ZCGHH01100)
国家自然基金(60578037)
国家自然基金中俄合作项目(60711120198)
天津大学985项目资助课题
