A Secret Weapon For CLBO Crystal
A Secret Weapon For CLBO Crystal
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All-solid-state ultraviolet lasers have already been broadly Utilized in the fields of mechanical flaw detection, lithography, micromachining and medicine for some great benefits of compact quantity, long existence, higher efficiency, superior beam high-quality, huge tuning and slim spectral line, and so on. Making use of large power near-infrared coherent light-weight source as the elemental frequency supply according to nonlinear tuning technologies, building ultraviolet coherent radiation by multistage frequency conversion is thought to be a very important strategy to acquire the ultraviolet coherent light supply.
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According to the proof-of-theory experiment, the conversion performance of 23% implied the opportunity of attaining substantial-electric power at the 2nd Stokes wavelength of your Raman laser. In the event the pump laser of 1078 nm can be obtained at the typical electrical power of fifty W, the output electric power of its 2nd Stokes wavelength at 1512 nm can be much more than ten W. The design from the Raman laser cavity ought to be optimized as a way to stay away from the damage of your M1 and diamond floor.
The typical energy of the NIR laser continue to has the probable for being improved to tens of watts for instance 70 W [26] When the double-go configuration could possibly be used to the Yb:YAG SCF amplifier phase. That's why, When the conversion effectiveness of 31% from NIR to DUV might be however maintained at this increased electric power situation, the standard output energy with the DUV laser at 258 nm may very well be in excess of 20 W, which might become a exceptional energy amount for the DUV laser and bring about the unanticipated DUV laser machining final results. Moreover, for high-power DUV laser, the UV harm from the nonlinear crystal, including the Home windows for CLBO crystal and the mirrors, is yet another vital parameter for long-lasting and secure operation.
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LBO is likewise a great nonlinear crystal which is usually more info placed on the SHG in the NIR on the environmentally friendly. The DUV laser is generally recognized by two phases of SFG in the LBO crystals given that there isn't a section-matching angle for LBO to transform the environmentally friendly laser at 515 nm or 532 nm on the DUV instantly by SHG [sixteen]. A short while ago, the NSBBF crystal has also revealed its potential to acquire a superior conversion performance from 532 nm to 266 nm. The walk-off angle and deff on the NSBBF are Practically much like These of CLBO [seventeen].
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In addition, combining the good-point out laser with other nonlinear procedure for instance stimulated Raman scattering, NIR lasers may be achieved at new wavelengths with large electric power and high beam top quality, which was examined because of the evidence-of-basic principle experiment. This Raman laser plan provides a brand new route to the large-electricity DUV laser, In particular on the wavelength of 193 nm.
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Its UV absorption edge reaches 180 nm. The helpful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about two times as big as that of KDP. CLBO crystals may be developed through the stoichiometric melt with decreased viscosity.
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