A near-infrared wavelength tunable total positive dispersion femtosecond fiber laser
A technology of total positive dispersion and femtosecond fiber, which is applied to lasers, laser components, phonon exciters, etc., can solve problems such as instability and reduce nonlinear effects, and achieve reasonable structure, high single pulse energy, and simple mechanism Effect
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[0018] Below the present invention will be further described in conjunction with the embodiment in the accompanying drawing:
[0019] like Figure 1-Figure 2 As shown, it includes LD pump source 1, bandpass filter 2, wavelength division multiplexer 3, ytterbium-doped gain fiber 4, first single-mode fiber 5, collimator with pigtail 6, first quarter A wave plate 7, a first half-wave plate 8, a polarization splitter prism 9, a birefringent filter 10, a spatial optical isolator 11, a second quarter-wave plate 12, a collimator 13, a second single Mode fiber 14, the second half-wave plate 15, the second polarization beam splitter prism 16, high reflection mirror 17, the first reflective grating 18 installed on the grating mirror frame, the second reflective grating 19, mounted on the mirror The silver mirror 20 on the frame is installed at the bottom of the reflective grating 19 mirror frame, and the translation platform 21 that can precisely control the moving distance.
[0020] ...
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