US 12,438,335 B2
High-precision repetition rate locking apparatus for ultra-fast laser pulse
Heping Zeng, Chongqing (CN); Kun Huang, Chongqing (CN); Tingting Yu, Chongqing (CN); and Mengyun Hu, Chongqing (CN)
Assigned to CHONGQING INSTITUTE OF EAST CHINA NORMAL UNIVERSITY, Chongqing (CN); EAST CHINA NORMAL UNIVERSITY, Shanghai (CN); YUNNAN HUAPU QUANTUM MATERIAL CO., LTD, Yunnan (CN); ROI OPTOELECTRONICS TECHNOLOGY CO, LTD., Shanghai (CN); CHONGQING HUAPU SCIENTIFIC INSTRUMENT CO., LTD., Chongqing (CN); CHONGQING HUAPU INTELLIGENT EQUIPMENT CO., LTD., Chongqing (CN); and GUANGDONG ROI OPTOELECTRONICS TECHNOLOGY CO., LTD., Guangdong (CN)
Filed by Chongqing Institute of East China Normal University, Chongqing (CN); East China Normal University, Shanghai (CN); Yunnan Huapu quantum Material Co., Ltd, Yunnan (CN); ROI Optoelectronics Technology CO, LTD., Shanghai (CN); Chongqing Huapu Scientific Instrument Co.,Ltd., Chongqing (CN); Chongqing Huapu Intelligent Equipment Co., Ltd., Chongqing (CN); and GuangDong ROI Optoelectronics Technology Co., Ltd., Guangdong (CN)
Filed on Sep. 29, 2022, as Appl. No. 17/936,663.
Claims priority of application No. 202111159106.2 (CN), filed on Sep. 30, 2021.
Prior Publication US 2023/0114758 A1, Apr. 13, 2023
Int. Cl. H01S 3/067 (2006.01); H01S 3/091 (2006.01); H01S 3/1109 (2023.01); H01S 3/1112 (2023.01); H01S 3/13 (2006.01)
CPC H01S 3/1112 (2013.01) [H01S 3/0912 (2013.01); H01S 3/1109 (2013.01); H01S 3/13 (2013.01); H01S 3/0675 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A high-precision repetition rate locking apparatus for an ultra-fast laser pulse, comprises:
an electronic controlling component, configured to provide a high-precision radio-frequency electrical pulse signal, and comprising:
a standard clock, configured to provide a high-precision frequency standard;
a pulse generator (PG), configured to provide an electrical pulse signal with adjustable repetition rate, pulse width and voltage magnitude;
a signal generator (SG), connected to the standard clock and the PG, and configured to provide a stable frequency signal for the PG;
a loop mirror, connected to the electronic controlling component;
a phase-shift adjusting component, disposed in the loop mirror and connected to the electronic controlling component, and configured to implement phase modulation through electrically induced refractive index change of a crystal in the phase-shift adjusting component;
a resonant cavity component, comprising a phase shifter, a doped fiber, a laser diode, a wavelength division multiplexer and a reflector, and configured to generate a mode-locked pulse; and
a detecting component, configured to measure a repetition rate of an output pulse;
wherein the detecting component comprises a photoelectric detector and a frequency counter.