Short-cavity structural member for realizing dual-locking high-repetition-rate femtosecond laser
A femtosecond laser and double-locking technology, which is applied to the structure/shape of the active medium, laser components, laser components, etc., can solve the problems of increased sensitivity of the pulse output pulse environment, achieve long-term precision locking, and overcome sensitivity sexual effect
Pending Publication Date: 2020-11-03
SOUTH CHINA UNIV OF TECH
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Problems solved by technology
In the process of increasing the repetition rate of the fundamental frequency of the resonator output pulse, it is necessary to face the problem of increased sensitivity of the pulse output pulse performance to the environment
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[0024] A short-cavity structure for double-locked high-repetition-rate femtosecond lasers, such as figure 1 As shown, it includes a metal bottom box 1, a metal top box 2, a temperature detection element 3, a piezoelectric actuator 4, a semiconductor cooling chip 5 and a gain fiber 6;
[0025] Among them, the metal bottom box 1 and the metal top box 2 are provided with a groove for fixing the gain fiber in the high repetition rate laser resonator cavity, and the metal bottom box 1 and the metal top box 2 are connected by screws to form a metal box, and the gain fiber Clamped between the two; the piezoelectric actuator 4 is fixed in the cutout of the metal bottom box, and the fast locking of the output pulse repetition rate of the laser resonator is realized by stretching the gain fiber; the gain The optical fiber 6 is fixed on the upper surface of the piezoelectric actuator 4; the temperature sensing area of the temperature sensing element 3 is placed in the side opening of t...
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Abstract
The invention discloses a short-cavity structural member for realizing dual-locking high-repetition-rate femtosecond laser. The short-cavity structural member comprises a metal bottom box, a metal topbox, a temperature detection element, a piezoelectric actuator, a semiconductor chilling plate and a gain optical fiber. The metal bottom box and the metal top box are provided with grooves used forfixing gain fibers. The piezoelectric actuator is fixed in the notch of the metal bottom box, and the rapid locking of the output pulse repetition rate of the laser resonant cavity is realized by stretching the gain optical fiber; the gain fiber is fixed on the upper surface of the piezoelectric actuator; a temperature sensing area of the temperature sensing element is placed in an opening in theside surface of the metal bottom box; and the refrigeration surface of the semiconductor refrigeration sheet is attached to the bottom surface of the metal bottom box so as to suppress the influence of environmental temperature change on the output pulse repetition rate of the laser resonant cavity and realize slow locking of the repetition rate of the laser resonant cavity. According to the invention, the sensitivity of the output pulse repetition frequency of the short-cavity laser to the environment is overcome, and the long-term precise locking of the output pulse repetition frequency of the short-cavity laser is realized.
Description
technical field [0001] The invention relates to the field of fiber laser technology, in particular to a short-cavity structural component for realizing double-locking high repetition rate femtosecond laser. Background technique [0002] As an important resource, pulsed laser has important application value in the fields of biomedicine, optical communication network, industrial processing, basic research, military defense and so on. As an important performance index, the repetition rate of laser pulse has an important impact on its application value. In the field of optical communication network, pulsed laser as an information carrier, the improvement of laser pulse repetition rate will help to establish a high-speed optical communication network. In the field of laser material processing, the thermal diffusion effect of materials during processing not only causes energy loss, but also affects the accuracy of material processing. Shortening the time-domain interval of laser...
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IPC IPC(8): H01S3/067H01S3/04H01S3/131
CPCH01S3/0405H01S3/06704H01S3/131H01S3/1317
Inventor 杨中民王文龙乔田韦小明
Owner SOUTH CHINA UNIV OF TECH