公开(公告)号：US09065242B2

公开(公告)日：2015-06-23

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 ,  H01S5/0625 ,  G01S7/484 ,  H01S3/13 ,  H01S5/0687

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。

公开(公告)号：US20180364359A1

公开(公告)日：2018-12-20

申请号：US15622861

申请日：2017-06-14

申请人： Guangning Yang ,  Jeffrey R. Chen

发明人： Guangning Yang ,  Jeffrey R. Chen

IPC分类号： G01S17/66 ,  H04B10/112 ,  G02B27/10 ,  G02B23/02

CPC分类号： G01S17/66 ,  G02B23/02 ,  G02B27/1006 ,  H04B10/112

摘要： An apparatus for improving a pointing capability of an optical pointing system includes a star tracker attitude control system for maintaining an alignment between the optical pointing system and a target, a beam steering mirror controlled by the star tracker attitude control system to direct an optical signal to impinge on the target, a fixed optical assembly configured to direct a portion of the optical signal from the bean steering mirror into a field of view of a star tracker telescope of the star tracker attitude control system, and a detector array for detecting the portion of the optical signal superimposed over a location in a current star scene in the star tracker telescope field of view, where the star tracker attitude control system is configured to operate the beam steering mirror to maintain the optical signal on the target by maintaining the superimposed signal on the location in the star scene.

公开(公告)号：US07830527B2

公开(公告)日：2010-11-09

申请号：US12102240

申请日：2008-04-14

申请人： Jeffrey R. Chen

发明人： Jeffrey R. Chen

IPC分类号： G01B11/02

CPC分类号： G01B11/022 ,  G01S17/10 ,  G01S17/87 ,  G01S17/89

摘要： A pulsed laser system includes a modulator module configured to provide pulsed electrical signals and a plurality of solid-state seed sources coupled to the modulator module and configured to operate, responsive to the pulsed electrical signals, in a pulse mode. Each of the plurality of solid-state seed sources is tuned to a different frequency channel separated from any adjacent frequency channel by a frequency offset. The pulsed laser system also includes a combiner that combines outputs from each of the solid state seed sources into a single optical path and an optical doubler and demultiplexer coupled to the single optical path and providing each doubled seed frequency on a separate output path.

摘要翻译： 脉冲激光系统包括被配置为提供脉冲电信号的调制器模块和耦合到调制器模块并被配置为以脉冲模式响应于脉冲电信号来操作的多个固态种子源。 将多个固态种子源中的每一个调谐到与任何相邻频率信道分离的频率偏移的不同频率信道。 脉冲激光系统还包括组合器，其将来自固态种子源的每一个的输出组合成单个光路，耦合到单个光路并且在单独的输出路径上提供每个倍增的种子频率的光学倍增器和解复用器。

公开(公告)号：US20090051926A1

公开(公告)日：2009-02-26

申请号：US12102240

申请日：2008-04-14

申请人： Jeffrey R. Chen

发明人： Jeffrey R. Chen

IPC分类号： G01B11/02 ,  H01S3/10

CPC分类号： G01B11/022 ,  G01S17/10 ,  G01S17/87 ,  G01S17/89

摘要： A pulsed laser system includes a modulator module configured to provide pulsed electrical signals and a plurality of solid-state seed sources coupled to the modulator module and configured to operate, responsive to the pulsed electrical signals, in a pulse mode. Each of the plurality of solid-state seed sources is tuned to a different frequency channel separated from any adjacent frequency channel by a frequency offset. The pulsed laser system also includes a combiner that combines outputs from each of the solid state seed sources into a single optical path and an optical doubler and demultiplexer coupled to the single optical path and providing each doubled seed frequency on a separate output path.

摘要翻译： 脉冲激光系统包括被配置为提供脉冲电信号的调制器模块和耦合到调制器模块并被配置为以脉冲模式响应于脉冲电信号来操作的多个固态种子源。 将多个固态种子源中的每一个调谐到与任何相邻频率信道分离的频率偏移的不同频率信道。 脉冲激光系统还包括组合器，其将来自固态种子源的每一个的输出组合成单个光路，耦合到单个光路并且在单独的输出路径上提供每个倍增的种子频率的光学倍增器和解复用器。