All-fiber narrow-linewidth nanosecond tunable green laser
A narrow line width, laser technology, applied in the field of green laser, can solve the problems of complex structure, small tunable range, wide line width, etc., and achieve strong anti-interference ability, convenient miniaturization and packaging, and high effective nonlinear coefficient Effect
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[0023] The present invention will be further described below in conjunction with the accompanying drawings and examples. It should be noted that the protection scope of the present invention is not limited to the scope expressed in the examples.
[0024] Such as figure 1 As shown, the embodiment of the present invention provides an all-fiber narrow-linewidth nanosecond tunable green laser, including: a laser seed source (a), a two-stage single-mode fiber amplifier (b), a four-stage multimode fiber amplifier (c ) and a second harmonic device (d), the laser seed source (a) is a narrow-linewidth nanosecond laser with continuous tunable repetition rate and pulse width; the two-stage single-mode fiber amplifier (b) consists of a highly doped The mixed single-mode gain fiber and the single-mode fiber device used in conjunction with it; the four-stage multi-mode fiber amplifier (c) is a power amplifier composed of multi-stage fiber amplifier cascading; the second harmonic device (d) ...
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