A device for generating ultra-short ultraviolet pulses by fiber laser
An ultra-short pulse, fiber laser technology, applied in the direction of the structure/shape of the active medium, to achieve the effect of simplifying the structure, reducing the manufacturing cost, and increasing the energy
Active Publication Date: 2015-09-09
广东华快光子科技有限公司 +1
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However, the second method requires two frequency processes, that is, two nonlinear optical crystals, which puts higher requirements on optical design, manufacturing cost, and light source stability.
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[0016] The features of the present invention and other related features will be further described in detail below in conjunction with the accompanying drawings through embodiments, so as to facilitate the understanding of those skilled in the art:
[0017] Such as figure 1 As shown, a fiber laser device for generating ultra-short ultraviolet pulses is characterized in that it includes sequential connections for providing picosecond-level fundamental frequency light ω 1 The laser oscillator 100 is used to initially increase the fundamental frequency light ω 1 The energy fiber pre-amplifier 200 is used to further increase the fundamental frequency light ω 1 Energy to the signal light ω of the parametric process generated by nonlinear six-wave mixing 2 and signal light ω 3 The optical fiber main amplifier 300, and the high-energy fundamental frequency light ω 1 , signal light ω 2 and signal light ω 3 A frequency converter 400 for converting to ultraviolet band frequencies. ...
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The invention discloses a device for generating an ultraviolet ultrashort pulse by a fiber laser. The device comprises a laser oscillator used for providing picosecond fundamental frequency light Omega 1, an optical fiber preamplifier used for preliminarily improving the energy of the fundamental frequency light Omega 1, an optical fiber main amplifier used for further improving the energy of the fundamental frequency light Omega 1 until nonlinear six-wave mixing is generated and a signal light Omega 2 and a signal light Omega 3 of a parameter process are generated, as well as a frequency converter used for converting the high-energy fundamental frequency light Omega 1, the signal light Omega 2 and the signal light Omega 3 to an ultraviolet band frequency. The device aims to combine functions of seed pulse main amplification and frequency conversion through the optical fiber main amplifier, then an ultraviolet band laser is generated through one-time space frequency multiplication or a sum frequency process, therefore, the structure of an ultraviolet band laser is simplified, and the manufacturing cost of the laser is reduced greatly.
Description
[technical field] [0001] The invention relates to a device for generating ultraviolet ultrashort pulses by fiber laser. [Background technique] [0002] Ultraviolet lasers can be used in cutting-edge scientific research, engineering instrument development and industrial equipment manufacturing, and can be widely used in biotechnology and medical equipment. Ultraviolet light sources are very suitable for scientific research and industrial production. In terms of scientific research, ultraviolet band lasers have important applications in research fields such as spectroscopy, atom cooling and trapping, isotope measurement, atomic physics, and quantum optics. In industry, UV lasers are an excellent choice for micromachining systems and are widely used in circuit pattern making and consumer electronics. [0003] Due to the large photon energy in the ultraviolet band, it is difficult to directly generate picosecond-level ultraviolet laser radiation through external excitation met...
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IPC IPC(8): H01S3/067
Inventor 曾和平郝强
Owner 广东华快光子科技有限公司