A passively Q-switched laser and laser generation method thereof
A laser and passive technology, applied in the laser field, can solve problems such as increasing system complexity, poor laser output quality, and affecting marking processing effects
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Embodiment 1
[0038] Such as figure 1 As shown, this embodiment discloses a passive Q-switched laser, including a pumping system 1 and a laser head 3, the pumping system 1 includes a driving source 12 for controlling the temperature of a nonlinear crystal, and the laser head 3 includes a non-linear The linear crystal 9, the temperature matched by the nonlinear crystal 9 is greater than room temperature.
[0039] This embodiment also discloses a laser generation method of a passive Q-switched laser according to the present invention, including the steps: the pumping system sends pump light to the laser head, the laser head generates infrared pulsed laser light, and then generates a single pulse laser through a nonlinear crystal wavelength of laser light; after the pumping system emits pumping light, the driving source controls the temperature of the nonlinear crystal to stabilize within its matching range.
[0040] Generally, nonlinear crystals are matched in two ways. One is temperature mat...
Embodiment 2
[0045] Such as Figure 1-3 As shown, this embodiment adopts a passive Q-switched laser with a high-temperature angle-matched nonlinear crystal 9, including a pumping system 1, a collimating mirror 6, a focusing mirror 7, and a resonant cavity 8 that are sequentially optically coupled with the pumping system 1. The resonant cavity 8 sequentially includes an optically coupled reflector 81, a gain component 82, a passive Q-switching crystal 83, and an output mirror 84 from one side of the focusing mirror 7; the output mirror 84 is sequentially coupled with a nonlinear crystal 9 and a The temperature matched by the beam mirror 5 and the nonlinear crystal 9 is greater than room temperature. Specifically, the temperature matched by the nonlinear crystal 9 is greater than 25°C and less than or equal to 150°C. Preferably, the matching temperature of the nonlinear crystal 9 is greater than or equal to 40°C and less than or equal to 60°C. For example, 45°C, 48°C, 52°C, 55°C, 57°C, etc...
Embodiment 3
[0052] Such as figure 2 As shown, the green laser disclosed in this embodiment includes a pumping system 1, an energy transmission fiber 2, and a laser housing 4. The laser housing 4 is provided with a collimating mirror 6, a focusing mirror 7, a reflecting mirror 81, and a first gain crystal 821, a passive Q-switching crystal 83, an output mirror 84 and a double frequency crystal 91, a beam expander mirror 5 is fixed outside the casing 4, wherein the pumping system 1 is composed of a driving source 11 and a pumping source 12, and the driving source 11 is a pump The pump source 12 supplies power, the pump source 12 emits pump light, passes through the energy transmission fiber 2, passes through the collimating mirror 6 and the focusing mirror 7, and then pumps the first gain crystal 821, and the first gain crystal 821 generates a population inversion , spontaneous radiation occurs, under the feedback of the resonant cavity 8 composed of the reflector 81 and the output mirror ...
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