Terahertz Optoelectronic Down-Conversion and Phase-Locking Through Four-Wave Mixing
Terahertz Optoelectronic Down-Conversion and Phase-Locking Through Four-Wave Mixing
复制标题
通过四波混频实现太赫兹光电下变频和锁相
DOI：
10.1109/lpt.2014.2342379
复制
发表时间：
2014
影响因子：
2.6
通讯作者：
M. Alouini
中科院分区：
文献类型：
--
作者：
A. Rolland;L. Pouget;M. Brunel;M. Alouini
太赫兹光拍音到RF中频的光电下变频是用标准马赫-曾德尔调制器和零色散斜率高度非线性光纤来执行的。通过四波混频获得的两个交错光梳被示出为包含超过75个谐波，使得能够方便地恢复在770 GHz和~500 MHz下的拍音的相位噪声。这种简单的四波混频辅助下变频结构被实现到双频固态激光器中，以便直接锁相其频率差。这在直接锁相到10 MHz本地振荡器的168 GHz拍音上示出。
Optoelectronic down-conversion of a terahertz optical beatnote to a RF intermediate frequency is performed with a standard Mach-Zehnder modulator followed by a zero dispersion-slope highly nonlinear fiber. The two interleaved optical combs obtained by four-wave mixing are shown to contain more than 75 harmonics enabling to conveniently recover the phase noise of a beatnote at 770 GHz at ~500 MHz. This simple four-wave mixing assisted down-conversion architecture is implemented to a two-frequency solid-state laser in order to directly phase-lock its frequency difference. This is illustrated on a beatnote at 168 GHz directly phase locked to the local oscillator at 10 MHz.