公开(公告)号：US11916349B2

公开(公告)日：2024-02-27

申请号：US17038432

申请日：2020-09-30

申请人： Shanxi University

发明人： Jing Su ,  Huiqi Yang ,  Huadong Lu ,  Kunchi Peng

IPC分类号： H01S3/04 ,  H01S3/08 ,  H01S3/00 ,  H01S3/16 ,  H01S3/08031 ,  H01S3/102 ,  G01K17/00 ,  H01S3/081 ,  H01S3/042

CPC分类号： H01S3/08072 ,  H01S3/0014 ,  H01S3/0405 ,  H01S3/08031 ,  H01S3/1022 ,  H01S3/1611 ,  H01S3/1673 ,  G01K17/003 ,  H01S3/042 ,  H01S3/0816

摘要： A device and a method for measuring a thermal load caused by energy transfer upconversion in a laser gain crystal. Increasing the pump power multiple times so that the power meter obtains multiple thresholds for a single-frequency laser; obtaining an average pump threshold of the output laser; obtaining cavity parameters of the single-frequency laser; obtaining thermal focal lengths on the tangential and sagittal planes of the laser gain crystal inside the single-frequency laser; obtaining individual ABCD matrices of the laser system on the tangential and the sagittal planes; obtaining a thermal load at the threshold based on the ABCD transfer matrix of the laser gain crystal on the tangential plane, the ABCD transfer matrix of the laser gain crystal on the sagittal plane, and the average pump threshold of the laser system; obtaining a thermal load caused by ETU at threshold based on the thermal load at the threshold.

公开(公告)号：US10326250B2

公开(公告)日：2019-06-18

申请号：US16015868

申请日：2018-06-22

申请人： Shanxi University

发明人： Huadong Lu ,  Pixian Jin ,  Jing Su ,  Kunchi Peng

IPC分类号： H01S3/105 ,  H01S3/109 ,  H01S3/107 ,  H01S3/083 ,  H01S3/16

摘要： A method for expanding a tuning range of an all-solid-state continuous-wave single-frequency laser is provided. The method includes inserting a nonlinear frequency-doubling crystal into a laser resonant cavity, and converting a part of intra-cavity fundamental-frequency light to frequency-doubled light by the nonlinear frequency-doubling crystal, outputting the generated frequency-doubled light and the fundamental-frequency light together from the laser resonant cavity, and separating the two via a spectroscope. The method also includes splitting a part of the fundamental-frequency light reflected by the spectroscope through an optical beam-splitter, and outputting the remaining part of the fundamental-frequency light as a main laser. A cavity length of the laser resonant cavity is changed by adjusting a voltage loaded on a piezoelectric ceramic of the all-solid-state continuous-wave single-frequency laser, thereby achieving continuous frequency-tuning of the all-solid-state continuous-wave single-frequency laser.

公开(公告)号：US20190089119A1

公开(公告)日：2019-03-21

申请号：US16015868

申请日：2018-06-22

申请人： Shanxi University

发明人： Huadong Lu ,  Pixian Jin ,  Jing Su ,  Kunchi Peng

IPC分类号： H01S3/105 ,  H01S3/109 ,  H01S3/107 ,  H01S3/083

摘要： A method for expanding a tuning range of an all-solid-state continuous-wave single-frequency laser is provided. The method includes inserting a nonlinear frequency-doubling crystal into a laser resonant cavity, and converting a part of intra-cavity fundamental-frequency light to frequency-doubled light by the nonlinear frequency-doubling crystal, outputting the generated frequency-doubled light and the fundamental-frequency light together from the laser resonant cavity, and separating the two via a spectroscope. The method also includes splitting a part of the fundamental-frequency light reflected by the spectroscope through an optical beam-splitter, and outputting the remaining part of the fundamental-frequency light as a main laser. A cavity length of the laser resonant cavity is changed by adjusting a voltage loaded on a piezoelectric ceramic of the all-solid-state continuous-wave single-frequency laser, thereby achieving continuous frequency-tuning of the all-solid-state continuous-wave single-frequency laser.