Examine This Report on CLBO Crystal
Examine This Report on CLBO Crystal
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All-good-state ultraviolet lasers happen to be broadly used in the fields of mechanical flaw detection, lithography, micromachining and drugs for some great benefits of little volume, lengthy existence, superior effectiveness, excellent beam high-quality, large tuning and slim spectral line, etcetera. Employing high electricity around-infrared coherent light-weight resource as the fundamental frequency source based upon nonlinear tuning engineering, making ultraviolet coherent radiation by multistage frequency conversion is considered to be an essential way to create the ultraviolet coherent light source.
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In accordance with the proof-of-principle experiment, the conversion performance of 23% implied the potential of accomplishing high-energy at the second Stokes wavelength in the Raman laser. In case the pump laser of 1078 nm may very well be received at the normal energy of 50 W, the output power of its 2nd Stokes wavelength at 1512 nm might be greater than ten W. The look in the Raman laser cavity needs to be optimized to be able to steer clear of the problems on the M1 and diamond surface area.
For instance, The present concave OC could get replaced by a plane mirror which could mitigate the ability density to the surface of M1 along with the diamond. Moreover, making use of significant damage threshold coatings for M1 and diamond would also improve the output electric power with none damages. Then, the NIR laser in the 2nd Stokes wavelength can be high adequate, along with its very good beam excellent, to deliver the ultimate DUV laser at 193 nm that has a significant typical electricity.
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On the opposite side, the facility scaling from the NIR laser is yet another element to improve the typical electric power of the 193-nm DUV laser. Due to lack of the substantial-electricity amplification solution in the NIR laser (one example is at 1553 nm), nonlinear frequency processes including optical parameter oscillation (OPO) may very well be placed on build a wavelength converter by shifting the wavelength from 1 μm to the specified wavelength as well as obtaining relative greater electrical power [21]. Just lately, a diamond Raman laser showed its skill in acquiring a high power along with a higher conversion efficiency within the 1st Stokes with the 1-μm laser [22,23], which implies the chance being utilized within the 193-nm DUV laser technology as a consequence of its large Raman get and huge frequency shift.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the most effective non-linear crystal which generates ultraviolet harmonics from the Nd:YAG fundamental laser wavelength. To be able to improve the harm threshold, low CLBO area roughness, by extremely-precision machining, is required. Since the CLBO crystal has simple hydroscopic response and micro scratches in machining, ultra-specific machining with the CLBO crystal can be a challenging technological challenge.
The beam profile demonstrated in Determine 7b shown more info a good beam top quality as among the list of deserves of Raman laser, which might be effective to deliver a 193-nm DUV laser with a high quality beam.
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