公开(公告)号：WO2008017214A1

公开(公告)日：2008-02-14

申请号：PCT/CN2006/001978

申请日：2006-08-04

Applicant: 深圳市大族激光科技股份有限公司 ,  马淑贞 ,  陈莉英 ,  高云峰

Inventor： 马淑贞 ,  陈莉英 ,  高云峰

IPC: H01S3/109

CPC classification number: G02F1/3532 ,  G02F2201/16 ,  H01S3/109

Abstract: A method for generating a fourth harmonic solid laser, generating a second harmonic by interacting a high power fundamental wavelength with a second harmonic nonlinear optical crystal (9), generating a fourth harmonic by entering the second harmonic into a fourth harmonic nonlinear optical crystal (12). A method is used that the second harmonic is reflected time after time in a cavity or out a cavity so as to generate an accumulative fourth harmonic. Therefore, the method can attain high efficiency and the stabilizing output frequency. The nonlinear optical crystal has long life.

公开(公告)号：WO2008014640A1

公开(公告)日：2008-02-07

申请号：PCT/CN2006/002077

申请日：2006-08-16

Applicant: 深圳市大族激光科技股份有限公司 ,  高云峰 ,  周宇超 ,  郑珺晖 ,  李君 ,  马淑贞

Inventor： 高云峰 ,  周宇超 ,  郑珺晖 ,  李君 ,  马淑贞

IPC: H01S3/109

CPC classification number: H01S3/109 ,  H01S3/106

Abstract: A fourth harmonic generating solid laser device includes a second harmonic generating cavity (11), a fourth harmonic generating cavity (12), the two cavities are designed independently, each of the optic devices in the fourth harmonic generating cavity (12) is connected with a motors (15,16) respectively, the motor (15,16) is connected with a computer. When one of a film of the surface of the optic devices is deteriorated, the optic device is displaced to another place by the motor. Therefore, the laser has long life.

公开(公告)号：WO2008055390A1

公开(公告)日：2008-05-15

申请号：PCT/CN2006/003334

申请日：2006-12-08

Applicant: 深圳市大族激光科技股份有限公司 ,  高云峰 ,  吕凤萍 ,  郑珺晖 ,  吴瑶 ,  马淑贞

Inventor： 高云峰 ,  吕凤萍 ,  郑珺晖 ,  吴瑶 ,  马淑贞

IPC: H01S3/0941 ,  H01S3/109 ,  H01S3/08 ,  H01S3/16

CPC classification number: H01S3/09415 ,  H01S3/07 ,  H01S3/0805 ,  H01S3/094053 ,  H01S3/109 ,  H01S3/11

Abstract: A third harmonic ultraviolet laser of semiconductor double end face pumping comprises a semiconductor pumping module (1), an optical coupling system (3), fundamental gain-medium crystals (5,6), a second harmonic nonlinear crystal (10), a third harmonic nonlinear crystal (13), a wave plate (11), a modulation device (7), laser resonant cavity mirrors (4,9,14), and an ultraviolet laser reflecting mirror (12). The pump-light emitted by the semiconductor pumping module is transmitted into the optical coupling system, then collimated and focused by the optical coupling system, and incidents directly on the end faces of the fundamental gain-medium crystals. The light emitted by the excited fundamental gain-medium crystals forms fundamental frequency light beam via mode selection of the laser resonant cavity mirrors, and the modulated laser beam is obtained by the modulation function of the modulation device. The modulated fundamental frequency laser beam is converted to green laser beam via the second harmonic nonlinear crystal and is polarized by the wave plate. The fundamental frequency laser beam and green laser beam which are the same polarization are incident into the third harmonic nonlinear crystal, thereby performing sum-frequency and generating third harmonic ultraviolet laserbeam.