5 Essential Elements For CLBO Crystal
5 Essential Elements For CLBO Crystal
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On the other hand, as a way to method the crystal is incredibly advanced producing procedures are expected. For the reason that dawn of this crystal, working on this challenge, we are actually the only firm on the planet that could be processed in this crystal.
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The normal electric power on the NIR laser nevertheless has the potential to generally be enhanced to tens of watts like 70 W [26] if the double-move configuration could possibly be used to the Yb:YAG SCF amplifier phase. That's why, When the conversion performance of 31% from NIR to DUV may very well be even now managed at this larger ability problem, the standard output energy of the DUV laser at 258 nm could possibly be much more than 20 W, which would become a extraordinary power level for your DUV laser and bring about the unanticipated DUV laser machining benefits. Also, for top-power DUV laser, the UV damage from the nonlinear crystal, such as the windows for CLBO crystal along with the mirrors, is an additional essential parameter for long-term and secure Procedure.
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Mainly because of the thermal lens influence while in the sound-state lasers, Should the heating management is inadequate, It's not necessarily straightforward to acquire the sound-point out laser having a superior electricity along with a significant beam high quality simultaneously. Not long ago, with the development of the thin disk laser and solitary-crystal fiber (SCF) laser, a superior-energy laser at the basic wavelength (one μm) had been realized with a superb beam excellent even with a TEM00 mode beam [4,24], which would be very good candidates for the basic with the DUV laser technology. A further prospect for the elemental could be the substantial-ability fiber laser which could be accomplished by coherent beam combination with M2 benefit fewer than one.
On the opposite side, the facility scaling with the NIR laser is an additional facet to increase the ordinary power of the 193-nm DUV laser. Mainly because of the insufficient the superior-electrical power get more info amplification solution on the NIR laser (for instance at 1553 nm), nonlinear frequency procedures such as optical parameter oscillation (OPO) may very well be applied to develop a wavelength converter by shifting the wavelength from one μm to the desired wavelength and acquiring relative higher electricity [21]. A short while ago, a diamond Raman laser showed its skill in reaching a large electric power and a higher conversion efficiency on the 1st Stokes on the 1-μm laser [22,23], which suggests the likelihood to get utilized while in the 193-nm DUV laser era on account of its substantial Raman attain and enormous frequency shift.
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During the scientific and industrial applications, the beam high quality in the DUV laser can be a crucial parameter. Notably, the beam top quality from the DUV laser dramatically has an effect on the laser machining benefits. The beam excellent in the DUV laser is decided by that of the fundamental laser as well as the crystal for that frequency conversion. Not too long ago, a large-electric power DUV laser (>10 W) at 258 nm was described having a beam good quality of M2 < one.5, which was produced by FHG of the Yb:YAG laser at 1030 nm using the CLBO crystal [13]. This laser would bring about a greater laser machining result as compared to the prior DUV lasers with larger M2.
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Its UV absorption edge reaches one hundred eighty nm. The helpful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about 2 times as significant as that of KDP. CLBO crystals could be developed with the stoichiometric soften with reduce viscosity.
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