Single-frequency narrow line width polarization maintaining full-optical fiber pulse laser device
A pulsed laser and narrow linewidth technology, which is applied in the direction of lasers, laser components, phonon exciters, etc., can solve the problems of unfavorable long-term stable application, complex control system, and narrow pulse width, so as to reduce the effect of amplified spontaneous emission , improved single-frequency performance, and easy-to-control effects
Active Publication Date: 2013-10-30
NANJING MOVELASER TECH CO LTD
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In the prior art, seed-implanted solid-state single-frequency lasers are widely used [see S.W.Henderson, E.H.Yuen, and E.S.Fry, Opt.Lett, Vol.11, No.11, pp.715 (1986)], this laser The output laser energy is relatively large, but the pulse width is generally narrow, the repetition frequency is low, and the line width is around tens of MHz to hundreds of MHz. Especially the control system is complicated, which is not conducive to long-term stable application
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[0019] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.
[0020] see figure 1 , figure 1 It is a structural schematic diagram of the single-frequency narrow-linewidth polarization-maintaining all-fiber pulsed laser of the present invention. It can be seen from the figure that the single-frequency narrow-linewidth polarization-maintaining all-fiber pulse laser of the present invention includes a continuous single-frequency seed source laser 1, and the propagation direction of the output beam of the continuous single-frequency seed source laser 1 is sequentially: the first acousto-optic Modulator 2, first stage single-mode fiber amplifier 3, first isolation filter 4, second stage single-mode fiber amplifier 5, second acousto-optic modulator 6, second isolation filter 7, third stage large mode field Double-clad fiber amplifier 8, t...
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The invention relates to a single-frequency narrow line width polarization maintaining full-optical fiber pulse laser device which comprises a continuous single-frequency seed source laser device, wherein a first acoustic optical modulator, a first-level single mode fiber amplifier, a first isolation filter, a second-level single mode fiber amplifier, a second acoustic optical modulator, a second isolation filter and a third-level large-mode-field double-cladding fiber amplifier are arranged along the propagation direction of an output beam of the continuous single-frequency seed source laser device. The output end of a pulse sequential control signal source is respectively connected to the first acoustic optical modulator, the second acoustic optical modulator and a sequential control end of the third-level large-mode-field double-cladding fiber amplifier. The single-frequency narrow line width polarization maintaining full-optical fiber pulse laser device has the characteristics that the structure is simple, the laser repetition frequency and the pulse width are adjustable, the efficiency is high, the single-frequency property is excellent and the light beam quality is high.
Description
technical field [0001] The invention relates to a pulse fiber laser, in particular to a single-frequency narrow-linewidth polarization-maintaining all-fiber pulse laser. technical background [0002] Single-frequency linearly polarized pulsed lasers have important application prospects in the fields of remote sensing technology, spectroscopy technology, coherent lidar detection and coherent communication. In these fields, the laser linewidth is often required to be below 10MHz, and there are also different requirements for the pulse repetition frequency. In the prior art, seed-implanted solid-state single-frequency lasers are widely used [see S.W.Henderson, E.H.Yuen, and E.S.Fry, Opt.Lett, Vol.11, No.11, pp.715 (1986)], this laser The output laser energy is relatively large, but its pulse width is generally narrow, the repetition frequency is low, and the line width is around tens of MHz to hundreds of MHz. Especially the control system is complex, which is not conducive to...
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IPC IPC(8): H01S3/067H01S3/106
Inventor 陈卫标朱韧周军刘继桥
Owner NANJING MOVELASER TECH CO LTD