%0 Journal Article
%T Frequency tunable terahertz pulses generated from GaP waveguide emitter<br>GaP波导型发射器产生频率可调谐太赫兹脉冲
%A Liu Feng
%A Li Yi
%A Shi Jun-Kai
%A Hu Xiao-Kun
%A Li Jiang
%A Li Yan-Feng
%A Xing Qi-Rong
%A Hu Ming-Lie
%A Chai Lu
%A Wang Qing-Yue
%A <br>刘丰
%A 李毅
%A 石俊凯
%A 胡晓堃
%A 李江
%A 栗岩锋
%A 邢岐荣
%A 胡明列
%A 柴路
%A 王清月
%J 物理学报
%D 2012
%I 
%X We report on a frequency-tunable terahertz pulse train generated from a rectangular GaP waveguide emitter pumped by a pulse width tunable femtosecond photonic crystal fiber amplifier. The THz frequency can be tuned by varying the pump pulse duration. The dispersion of the emitter can be controlled via the geometry of the waveguide, and the coherent buildup length can be increased to scale up the output power. Waveguides with different cross sections can be used to tune the THz spectrum. Combined with the pump pulse duration tuning technique, THz pulses with a precisely tunable frequency can be obtained. In the experiment, tunable THz radiation is obtained from a GaP waveguide emitter with a cross section of 1 mm×0.7 mm. Finally, a GaP emitter array is designed to achieve a wider tuning range.
%K ultrafast terahertz wave
%K frequency tuning
%K GaP waveguide
%K femtosecond photonic crystal fiber laser<br>超快太赫兹波
%K 频率调谐
%K GaP波导
%K 光子晶体光纤飞秒激光
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=EA4AE3EE8E5D685E71871744D2A5614A&yid=99E9153A83D4CB11&vid=1D0FA33DA02ABACD&iid=38B194292C032A66&sid=8C539E1A9582E287&eid=8C539E1A9582E287&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=23