Fiber laser apparatus
A fiber laser and laser technology, which is applied to laser devices, lasers, laser parts, etc., can solve the problems of deviation during the rise of the laser, and achieve the effect of short rising period and suppressing deviation.
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no. 1 Embodiment approach ）
[0037] figure 1 It is a diagram showing the fiber laser device according to the first embodiment of the present invention.
[0038] Such as figure 1 As shown, the fiber laser device 100 is mainly composed of: a seed laser light source 10 that outputs a seed laser with a wavelength of λ1; an excitation light source 20 that outputs excitation light; an optical fiber 30 for amplification that inputs excitation light and laser light; The optical coupler 40 of the excitation light and the seed laser light; the output unit 50 outputting the light output by the optical fiber 30 for amplification; the control unit 60 controlling the seed laser light source 10 and the excitation light source 20; the output command unit 65, which is input to the control unit 60 an output command to cause the output section 50 to output laser light; and a memory 67 that stores the intensity of the excitation light output from the excitation light source 20 according to the intensity of the laser light o...
no. 2 Embodiment approach ）
[0084] Next, refer to Figure 5 A second embodiment of the present invention will be described in detail. However, the same or equivalent components as those in the first embodiment are assigned the same reference numerals, and overlapping descriptions are omitted. Figure 5 It is a diagram showing a fiber laser device according to a second embodiment of the present invention.
[0085] Such as Figure 5 As shown, the fiber laser device 110 is equipped with: a wavelength converter 71 provided between the amplifying optical fiber 30 and the output unit 50 to receive light output from the amplifying optical fiber 30; Among them, the wavelength selection filter 73 to which the light output from the wavelength converter 71 is input differs from the first embodiment.
[0086] The wavelength converter 71 is composed of an optical fiber that causes stimulated Raman scattering. The wavelength converter 71 converts the incident light into light with a longer wavelength and outputs i...
no. 3 Embodiment approach ）
[0100] Next, refer to Figure 6 A third embodiment of the present invention will be described in detail. However, the same reference numerals are assigned to the same or equivalent components as those in the second embodiment, and overlapping descriptions will be omitted. This embodiment is a fiber laser device using the fiber laser device 110 described in the second embodiment.
[0101] Figure 6 It is a timing chart showing the operation of the fiber laser device 110 according to the third embodiment of the present invention. The fiber laser device 110 of the present embodiment outputs the preliminary excitation light from the excitation light source 20 in the pre-excitation state, and outputs weak seed laser light from the seed laser light source 10. In this point, it is different from the fiber laser device 110 of the second embodiment. different.
[0102] Specifically, as Figure 5 As shown, at time t1 ( t6 , t12 ), when an output command is input from the output com...
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