Laser based on cascade effect of bulk laser self-variable-frequency material
A cascade effect, self-conversion technology, applied in lasers, laser parts, phonon exciters, etc., can solve the problems of complex structure and low stability of ultraviolet solid-state lasers, and achieve compact structure, low production cost, and composite functions. strong effect
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Embodiment 1
[0035] see figure 1 , figure 2 In this embodiment, a solid-state laser based on the cascade effect of Nd:YCOB self-converting crystal is produced. The fundamental frequency light is 1060nm. The intracavity laser propagates along the "V" shape in the crystal, and the triple frequency light exits at the output mirror B. Achieve 354nm ultraviolet laser output.
[0036] Substrate 3-1 is a hafnium dioxide (HfO 2 ) material, the size of the substrate is equal to the size of the third optical surface 1-3 of the Nd:YCOB self-converting crystal. The cooling and temperature control device 4-1 is placed on the above-mentioned substrate 3-1, and the cooling and temperature control device 4-1 adopts a conventional crystal cooling and temperature control device purchased in the market.
[0037] The pumping source 5-1 adopts a pumping source with a center wavelength near 811 nm, which is a semiconductor laser in this embodiment.
[0038] Block laser self-converting material 2-1 adopts N...
Embodiment 2
[0050] The specific structure of this embodiment refers to Figure 5 ; In this embodiment, a solid-state laser (1.3 μm fundamental frequency self-tripling solid-state laser) is produced based on the laser self-frequency conversion crystal Nd:YCOB cascade effect. This embodiment is similar to Embodiment 1. The intracavity laser propagates along a "V" shape in the crystal, and the frequency tripled light emerges from the B terminal of the output mirror to achieve 443.3nm laser output.
[0051] The difference with embodiment 1 is mainly:
[0052] 1. The wavelength of the fundamental frequency light is the 1.3μm center output wavelength of the Nd:YCOB self-converting material.
[0053] 2. The cavity film of the resonant cavity is changed, and the first optical surface 1-1 of the self-converting crystal is coated with a high-reflection film for 1.3μm fundamental frequency light and 443.3nm triple frequency light (reflectivity is greater than 90%), and 665.5nm frequency double ligh...
Embodiment 3
[0059] The specific structure reference of this embodiment Figure 6 ; This embodiment makes a solid-state ultraviolet laser based on the laser frequency conversion crystal Nd:GdCOB cascade effect. This embodiment is similar to Embodiment 1. The intracavity laser propagates along a "V" shape in the crystal. The main differences from Embodiment 1 are:
[0060] 1. Nd:GdCOB crystal with a doping concentration of 8at.% is used as the self-converting material. The crystal cutting and manufacturing method is similar to that of Example 1. The fundamental frequency light is the 1061nm central radiation wavelength of the Nd:GdCOB crystal.
[0061] 2. The frequency-doubled light 7-2 exits from the mirror of the laser resonator A, and the frequency-tripled light 7-3 exits from the laser resonator B, realizing dual-wavelength output of 530.5nm frequency-doubled light and 354nm ultraviolet laser.
[0062] 3. The pumping method is changed to double-end pumping of the self-variable crystal,...
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