公开(公告)号：US20130308663A1

公开(公告)日：2013-11-21

申请号：US13474053

申请日：2012-05-17

申请人： JEFFREY R. CHEN ,  Kenji Numata ,  Stewart T. Wu ,  Guangning Yang

发明人： JEFFREY R. CHEN ,  Kenji Numata ,  Stewart T. Wu ,  Guangning Yang

IPC分类号： H01S3/10

CPC分类号： H01S5/06256 ,  G01S7/484 ,  H01S3/1304 ,  H01S3/1305 ,  H01S5/0687

摘要： An apparatus and method is provided to enable precision and fast laser frequency tuning. For instance, a fast tunable slave laser may be dynamically offset-locked to a reference laser line using an optical phase-locked loop. The slave laser is heterodyned against a reference laser line to generate a beatnote that is subsequently frequency divided. The phase difference between the divided beatnote and a reference signal may be detected to generate an error signal proportional to the phase difference. The error signal is converted into appropriate feedback signals to phase lock the divided beatnote to the reference signal. The slave laser frequency target may be rapidly changed based on a combination of a dynamically changing frequency of the reference signal, the frequency dividing factor, and an effective polarity of the error signal. Feed-forward signals may be generated to accelerate the slave laser frequency switching through laser tuning ports.

摘要翻译： 提供了一种能够实现精确和快速的激光频率调谐的装置和方法。 例如，使用光锁相环可以将快速可调的从属激光器动态地偏置锁定到参考激光线。 从属激光器与参考激光线进行外差，以产生随后频率分频的节拍。 可以检测分割的拍子和参考信号之间的相位差，以产生与相位差成比例的误差信号。 误差信号被转换成适当的反馈信号，以将分频的beatnote锁定到参考信号。 可以基于参考信号的动态变化的频率，分频因子和误差信号的有效极性的组合来快速地改变从属激光频率目标。 可以产生前馈信号，以通过激光调谐端口加速从属激光器频率切换。