The smart Trick of CLBO Crystal That Nobody is Discussing
The smart Trick of CLBO Crystal That Nobody is Discussing
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All-stable-condition ultraviolet lasers are greatly Utilized in the fields of mechanical flaw detection, lithography, micromachining and medication for the benefits of tiny volume, long life, superior performance, very good beam top quality, broad tuning and narrow spectral line, etcetera. Making use of higher ability close to-infrared coherent light-weight resource as the elemental frequency source determined by nonlinear tuning technological innovation, generating ultraviolet coherent radiation by multistage frequency conversion is viewed as an essential technique to create the ultraviolet coherent gentle supply.
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We summarized The present advancement status of your high-electrical power DUV laser each within the wavelength of FHG in the one-μm laser and at 193 nm. The latest enhancement of the reliable-point out/fiber laser, as well as the nonlinear optical crystals, prompts not simply the average electricity but also the beam top quality (coherence) with the DUV lasers to an unparalleled amount.
The true secret issue of ultraviolet coherent mild resource primarily concentrates on the event of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is one of the circumstances for frequency transformation, so the growth, size, damage resistance, conversion performance and allowable parameter selection of nonlinear optical crystal are needed An increasing number of.
On the other hand, the beam excellent of the larger electric power DUV laser would grow to be even worse because of additional serious thermal and nonlinear results. That's why, the frequency conversion procedures need to be cautiously created to mitigate the aforementioned results. As a result, a higher-electrical power DUV laser at the FHG of 1 μm with a good beam quality might be obtained and may be valuable for acquiring the shorter wavelength DUV lasers including 193 nm by SFG.
The two the 1040 nm and 1078 nm laser come from a person dual-wavelength Yb-doped fiber laser. Every laser is amplified by levels of fiber amplifier and Yb-doped elements amplifier, respectively.
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The conversion effectiveness from basic NIR to DUV is from five% to 36% according to the described results in Desk 1. Raising the conversion efficiency will decrease the stress on the design and set up of the elemental laser amplifier plus the electric powered electrical power intake. A good beam top quality of the basic laser will likely contribute towards the rising with the conversion performance as well as the appropriate energy intensity from the NIR and environmentally friendly laser in the SHG and FHG process, respectively. The highest conversion efficiencies from NIR to environmentally friendly and eco-friendly to DUV laser by utilization of CLBO crystal are 70% and all around 50%, respectively [twelve], which corresponds into the conversion effectiveness of 35% from basic to DUV.
The event from the 193-nm laser was demonstrated by levels of SFG. So that you can scale the DUV laser electrical power proficiently, a brand new principle on the 193-nm DUV laser technology is introduced based on the diamond Raman laser.