Examine This Report on CLBO Crystal
Examine This Report on CLBO Crystal
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All-solid-point out ultraviolet lasers happen to be extensively used in the fields of mechanical flaw detection, lithography, micromachining and medicine for the advantages of small volume, extensive life, superior performance, very good beam high quality, broad tuning and slender spectral line, and many others. Using large electrical power close to-infrared coherent light-weight supply as the elemental frequency source according to nonlinear tuning technology, making ultraviolet coherent radiation by multistage frequency conversion is thought to be a very important approach to establish the ultraviolet coherent mild supply.
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We summarized The existing progress status of your high-electric power DUV laser the two with the wavelength of FHG on the one-μm laser and at 193 nm. The modern development on the strong-condition/fiber laser, as well as the nonlinear optical crystals, prompts don't just the standard electricity but will also the beam top quality (coherence) with the DUV lasers to an unparalleled amount.
The standard electric power of the NIR laser continue to has the likely to be enhanced to tens of watts like 70 W [26] In case the double-pass configuration may be used with the Yb:YAG SCF amplifier stage. That's why, if the conversion performance of 31% from NIR to DUV may be still taken care of at this greater electrical power issue, the normal output ability of your DUV laser at 258 nm can be more than twenty W, which might certainly be a amazing electric power degree for your DUV laser and lead to the unanticipated DUV laser machining success. Also, for prime-power DUV laser, the UV problems of the nonlinear crystal, such as the windows for CLBO crystal along with the mirrors, is another significant parameter for long-term and secure operation.
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Both equally the 1040 nm and 1078 nm laser come from 1 dual-wavelength Yb-doped fiber laser. Each laser is amplified by levels of fiber amplifier and Yb-doped elements amplifier, respectively.
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The beam profile proven in Figure 7b demonstrated a good beam high quality as one of many merits of Raman laser, which might be effective to deliver a 193-nm DUV laser with a high quality beam.
The conversion efficiency from basic NIR to DUV is from five% to 36% according to the documented brings about Desk 1. Rising the conversion performance will reduce the burden on the design and set up of the elemental laser amplifier as well as the electric electricity use. A great beam good quality of the basic laser can even add into the increasing of the conversion efficiency and the right electricity depth on the NIR and inexperienced laser inside the SHG and FHG method, respectively. The highest conversion efficiencies from NIR to green and environmentally friendly to DUV laser by utilization of CLBO crystal are 70% and about fifty%, respectively [12], which corresponds towards the conversion performance of 35% from elementary to DUV.
The development with the 193-nm laser was shown by levels of SFG. To be able to scale the DUV laser electricity correctly, a brand new notion with the 193-nm DUV laser technology is introduced based on the diamond Raman laser.