公开(公告)号：WO2023049139A1

公开(公告)日：2023-03-30

申请号：PCT/US2022/044177

申请日：2022-09-21

申请人： RAYTHEON COMPANY

发明人： HARTIN, Paul T. ,  SPARIOSU, Kalin ,  PATRIZI, Michael R.

IPC分类号： H01S5/0625 ,  H01S5/065 ,  H01S5/14 ,  H01S3/107 ,  H01S3/11 ,  H01S5/06

摘要： A synthesizer is provided having a controller configured to receive a first signal. A digital-to-analog converter (DAC) is coupled to the controller and configured to generate a voltage bias based on the first signal. The voltage bias corresponds to a target resonant frequency. A semiconductor laser is coupled to the DAC and configured to receive a second signal tone. The semiconductor laser generates a plurality of tone signals having octave multiples of a base sub-harmonic tone of the second signal tone.

公开(公告)号：WO2022251057A1

公开(公告)日：2022-12-01

申请号：PCT/US2022/030246

申请日：2022-05-20

申请人： RAYTHEON COMPANY

发明人： SPARIOSU, Kalin ,  HARTIN, Paul T. ,  PATRIZI, Michael R.

IPC分类号： H01S3/107 ,  H01S5/065 ,  H01S5/14 ,  H03B17/00

摘要： A synthesizer includes a first resonator mirror, a second resonator mirror, and a gain medium disposed within a laser resonator cavity defined by the first resonator mirror and the second resonator mirror. The synthesizer includes a saturable absorber operationally coupled to the gain medium and having active control such that the saturable absorber is configured to generate a waveform via an injection locking signal to create a mode locking effect, the waveform having a frequency comb defined by dimensions of the gain medium. The synthesizer also includes a crystal electro-optical modulator disposed within the laser resonator cavity. The waveform passes through the modulator to impinge on a photodiode to output an emission RF waveform. Changing the voltage applied to the modulator changes the index of refraction of the modulator, altering an optical path length of the laser resonator cavity to adjust a frequency of the emission RF waveform.

公开(公告)号：WO2019094509A1

公开(公告)日：2019-05-16

申请号：PCT/US2018/059684

申请日：2018-11-07

申请人： RAYTHEON COMPANY

发明人： TONG, Tuan M. ,  MCGEHEE, Willam K. ,  PATRIZI, Michael R.

IPC分类号： H03L7/20 ,  H03L7/18

摘要： A signal generator. A voltage controlled oscillator generates a signal that is fed to a comb generator, e.g., a nonlinear transmission line. A tone, from among a comb of tones at the output of the comb generator, is selected by a bandpass filter, its frequency is divided, e.g., by a direct digital synthesizer, and the result is compared, e.g., by a phase and frequency detector that receives a reference signal at its other input. The output of the phase and frequency detector is fed back, e.g., through a lowpass filter, to the voltage controlled oscillator.