A Secret Weapon For CLBO Crystal
A Secret Weapon For CLBO Crystal
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All-reliable-point out ultraviolet lasers have already been commonly Utilized in the fields of mechanical flaw detection, lithography, micromachining and medication for some great benefits of small volume, extensive life, superior performance, excellent beam top quality, extensive tuning and slender spectral line, and many others. Making use of higher ability in close proximity to-infrared coherent mild supply as the basic frequency source according to nonlinear tuning know-how, building ultraviolet coherent radiation by multistage frequency conversion is viewed as a vital method to develop the ultraviolet coherent mild supply.
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In accordance with the evidence-of-theory experiment, the conversion efficiency of 23% implied the potential for attaining large-electrical power at the second Stokes wavelength of your Raman laser. If your pump laser of 1078 nm may be obtained at the standard electricity of 50 W, the output electricity of its 2nd Stokes wavelength at 1512 nm might be greater than ten W. The design from the Raman laser cavity need to be optimized so as to avoid the destruction in the M1 and diamond surface.
For illustration, The present concave OC could get replaced by a airplane mirror which could mitigate the power density over the area of M1 and the diamond. Moreover, using superior problems threshold coatings for M1 and diamond would also improve the output power with no damages. Then, the NIR laser on the 2nd Stokes wavelength could be significant sufficient, and its excellent beam high-quality, to create the ultimate DUV laser at 193 nm which has a higher regular energy.
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As a result of thermal lens outcome while in the strong-condition lasers, In case the heating management is inadequate, it is not effortless to acquire the stable-point out laser using a superior electrical power in addition to a higher beam good quality at the same time. A short while ago, with the development of The skinny disk laser and solitary-crystal fiber (SCF) laser, a higher-electric power laser at the elemental wavelength (one μm) had been realized with a good beam excellent Despite having a TEM00 manner beam [four,24], which might be good candidates for the basic of your DUV laser technology. A different more info prospect for the elemental is definitely the superior-electricity fiber laser which can be obtained by coherent beam mix with M2 benefit fewer than one.
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Within the scientific and industrial applications, the beam quality of your DUV laser is likewise a crucial parameter. Particularly, the beam excellent with the DUV laser radically impacts the laser machining success. The beam top quality of your DUV laser is determined by that of the basic laser as well as crystal with the frequency conversion. Not too long ago, a superior-electrical power DUV laser (>10 W) at 258 nm was described by using a beam high quality of M2 < one.five, which was generated by FHG of a Yb:YAG laser at 1030 nm utilizing the CLBO crystal [thirteen]. This laser would bring about a far better laser machining end result as compared to the prior DUV lasers with more substantial M2.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the best non-linear crystal which generates ultraviolet harmonics with the Nd:YAG fundamental laser wavelength. So as to greatly enhance the damage threshold, low CLBO area roughness, by extremely-precision machining, is required. Because the CLBO crystal has simple hydroscopic response and micro scratches in machining, extremely-precise machining from the CLBO crystal is really a tough technological dilemma.
Tunable ultraviolet laser supply based upon stable-condition dye laser know-how and CsLiB6O10 harmonic era
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