3μm~5μm mid-wave infrared solid-state laser with narrow linewidth
A solid-state laser and narrow linewidth technology, applied in the field of optics, to achieve high power and increase the effect of amplification factor
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specific Embodiment approach 1
[0038] Specific implementation mode one: the following combination figure 1 Explain that the 3 μm to 5 μm mid-wave infrared solid-state laser with narrow linewidth in this embodiment includes a first 2.1 μm half-wave plate 1-1, a second 2.1 μm half-wave plate 1-2, and a third 2.1 μm half-wave plate 1 -3, the fourth 2.1μm half-wave plate 1-4, medium-wave half-wave plate 1-5, the first polarizer 2-1, the second polarizer 2-2, the first plano-convex lens 3-1, the second plano-convex lens Convex lens 3-2, the third plano-convex lens 3-3, the fourth plano-convex lens 3-4, the first reflector 4-1, the second reflector 4-2, the first 45 ° mid-wave reflector 5-1, the first Second 45° MW reflector 5-2, third 45° MW reflector 5-3, fourth 45° MW reflector 5-4, BaGa 4 Se 7 Crystal 6, the first 45° medium wave filter 7-1, the second 45° medium wave filter 7-2, the third 45° medium wave filter 7-3 and ZnGeP 2 crystal 8;
[0039] The first 2.1 μm half-wave plate 1-1 and the first polariz...
specific Embodiment approach 2
[0057] Embodiment 2: The difference between this embodiment and Embodiment 1 is: the first 2.1 μm half-wave plate 1-1, the second 2.1 μm half-wave plate 1-2, and the third 2.1 μm half-wave plate 1- 3 and the fourth 2.1 μm half-wave plate 1-4 are coated with a 2.1 μm high-transparency film with a diameter of 10 mm to 15 mm; 10 mm to 15 mm; the surface of the first polarizer 2-1 and the second polarizer 2-2 are both coated with a high reflection film for 2.1 μm vertically polarized light and a high transmittance film for 2.1 μm horizontally polarized light, with a diameter of 10mm ~ 20mm. Others are the same as in the first embodiment.
specific Embodiment approach 3
[0058] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the first plano-convex lens 3-1, the second plano-convex lens 3-2, the third plano-convex lens 3-3 and the fourth plano-convex lens The surface of the plano-convex lens 3-4 is coated with a 2.1 μm high-transparency film, the focal length is 20 mm to 400 mm, and the diameter is 1 mm to 50 mm; the surface of the first mirror 4-1 and the second mirror 4-2 are coated with 2.1 μm μm high reflection film with a diameter of 10 mm to 50 mm; the first 45° medium wave filter 7-1 is coated with a 3.5 μm to 4.0 μm high reflection film and a 4.4 μm to 4.7 μm high transmission film on one side, and the other side Coated with a 2.1 μm high-transparency film with a diameter of 10 mm to 20 mm; the second 45° medium wave filter 7-2 and the third 45° medium wave filter 7-3 are coated with a 3 μm to 5 μm high Reflective film, the other side is coated with a 2.1μm high-transparency film,...
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