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Active mode locking CO2 laser

An active mode-locking and laser technology, which is applied to lasers, laser components, laser components, etc., can solve the problems of complex structure of pulse division method and wide laser pulse width, and achieve the effect of simple structure and miniaturization

Inactive Publication Date: 2014-09-17
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The purpose of the present invention is to provide an active mode-locked CO 2 laser

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  • Active mode locking CO2 laser
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Embodiment Construction

[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0017] figure 1 is the active mode-locked CO of the present invention 2 Schematic diagram of the working principle of the laser. The acousto-optic modulation technology is modulated by changing the diffraction loss caused by the periodically alternating ultrasonic field in the acousto-optic medium. The acousto-optic modulator is composed of a radio frequency generator 1-1, an electro-acoustic transducer 1-2, an acousto-optic medium 1-3, and a sound-absorbing material 1-5. for CO 2 Lasers and acousto-optic media usually use Ge materials. An acousto-optic modulator is inserted into the resonant cavity. When a high-frequency oscillation signal generated by a radio frequency (RF) power source is applied to the transducer, the refractive index of the acousto-optic medium changes periodically, forming an equivalent "phase grating". ”, when the incident beam 1-4...

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Abstract

An active mode locking CO2 laser belongs to the technical field of laser and solves the problems that the laser pulse width of an intracavity Q-switched method in the prior art is wider and a pulse splitting method in the prior art is complex in structure. The laser comprises a concave full-reflecting mirror, a laser tube, an acoustic optical modulator and a planar full-reflecting mirror which are sequentially and coaxially arranged from left to right. A radio frequency driver and a signal generator are connected with the acoustic optical modulator, the concave full-reflecting mirror and the planar full-reflecting mirror can form a laser oscillation cavity, the laser tube can discharge electricity to generate laser gain in the laser tube, the acoustic optical modulator is inserted into the cavity, the radio frequency driver is used for providing radio frequency signals for work of the acoustic optical modulator, and the signal generator is used for controlling an oscillating laser beam to reciprocate and oscillate in the cavity to achieve mode locking laser output. By means of an active mode locking method, high repetition frequency output of CO2 laser is achieved, meanwhile the pulse width of output laser is greatly compressed, and the pulse width of the output laser is about 10ns.

Description

technical field [0001] The invention belongs to the field of laser technology, in particular to an active mode-locked CO 2 laser. Background technique [0002] Ultrashort pulse laser has important application value in many fields such as particle acceleration, nuclear fusion ignition, high-energy X-ray, high-precision laser measurement and detection, and interaction between laser and matter, so it has become an eye-catching research in the field of laser technology in recent years. Hot and cutting-edge technologies. At present, the ultrashort pulse laser technology in the near-infrared and visible light bands is relatively mature, the output power can reach TW level, and the laser with pulse width fs level has reached the commercialization level. CO in the long-wave infrared band 2 Due to the influence of its own characteristics and devices, it is difficult to directly realize ultrashort pulse laser output, so the development is relatively slow, but ultrashort pulse CO wi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/03H01S3/034H01S3/098H01S3/223
Inventor 陈飞李殿军何洋郭劲
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI