The best Side of CLBO Crystal
The best Side of CLBO Crystal
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All-sound-condition ultraviolet lasers are commonly Utilized in the fields of mechanical flaw detection, lithography, micromachining and medication for the advantages of tiny volume, prolonged existence, higher efficiency, superior beam high-quality, huge tuning and slim spectral line, etc. Making use of substantial electrical power in close proximity to-infrared coherent mild resource as the basic frequency resource depending on nonlinear tuning know-how, making ultraviolet coherent radiation by multistage frequency conversion is considered an important approach to establish the ultraviolet coherent mild supply.
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The common electricity on the NIR laser nonetheless has the opportunity for being improved to tens of watts for instance 70 W [26] In case the double-move configuration could possibly be utilized for that Yb:YAG SCF amplifier stage. That's why, In the event the conversion efficiency of 31% from NIR to DUV might be even now taken care of at this better energy affliction, the standard output energy in the DUV laser at 258 nm could be greater than 20 W, which would be a remarkable power amount to the DUV laser and cause the unanticipated DUV laser machining effects. Additionally, for high-power DUV laser, the UV hurt on the nonlinear crystal, including the windows for CLBO crystal and also the mirrors, is another important parameter for long term and secure Procedure.
On the flip side, the beam good quality of this bigger electrical power DUV laser would come to be worse because of far more major thermal and nonlinear effects. Consequently, the frequency conversion processes really should be carefully created to mitigate the aforementioned effects. Consequently, a superior-power DUV laser in the FHG of 1 μm with a very good beam high-quality could be attained and may be useful for acquiring the shorter wavelength DUV lasers including 193 nm by SFG.
LBO can be an excellent nonlinear crystal which is often applied to the SHG from your NIR to your green. The DUV laser is normally recognized by two phases of SFG inside the LBO crystals considering the fact that there's no stage-matching angle for LBO to convert the eco-friendly laser at 515 nm or 532 nm on the DUV right by SHG [16]. Lately, the NSBBF crystal has also CLBO Crystal shown its possible to obtain a superior conversion performance from 532 nm to 266 nm. The stroll-off angle and deff of your NSBBF are Nearly similar to Those people of CLBO [seventeen].
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What's more, combining the stable-point out laser with other nonlinear course of action like stimulated Raman scattering, NIR lasers may be obtained at new wavelengths with superior power and superior beam good quality, which was analyzed via the evidence-of-basic principle experiment. This Raman laser plan delivers a completely new path to the superior-ability DUV laser, especially at the wavelength of 193 nm.
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