The Definitive Guide to CLBO Crystal
The Definitive Guide to CLBO Crystal
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In this paper, The brand new lapping slurry and sprucing slurry are released. And also the deliquescence degree of CLBO is fallen to cheapest. A new Functioning know-how is also adopted. Following rough polishing, the concentration of extremely-precision polishing slurry is enhanced correctly. So does the ultra-precision sprucing velocity, along with the wiping speed is quicker when compared to the deliquescence pace. The CLBO crystal floor roughness can attain 1nm and retain the area high quality effectively. Accessibility by your institution
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As an illustration, the current concave OC could be replaced by a plane mirror which could mitigate the power density on the surface area of M1 along with the diamond. What's more, applying significant hurt threshold coatings for M1 and diamond would also improve the output power without any damages. Then, the NIR laser for the 2nd Stokes wavelength could possibly be high ample, together with its good beam high-quality, to create the ultimate DUV laser at 193 nm with a large normal power.
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On another facet, the ability scaling in the NIR laser is another aspect to enhance the typical energy with the 193-nm DUV laser. As a result of insufficient the significant-electric power amplification Resolution on the NIR laser (as an example at 1553 nm), nonlinear frequency processes including optical parameter oscillation (OPO) could possibly be applied to produce a wavelength converter by shifting the wavelength from one μm to the desired wavelength as well as getting relative higher electric power [21]. Recently, a diamond Raman laser confirmed its ability in reaching a large electrical power plus a substantial conversion effectiveness with the 1st Stokes in the 1-μm laser [22,23], which means the possibility to get utilized inside the 193-nm DUV laser generation due to its high Raman gain and enormous frequency shift.
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In the scientific and industrial applications, the beam quality of the DUV laser is also an important parameter. Particularly, the beam high-quality with the DUV laser considerably impacts the laser machining outcomes. The beam high-quality on the DUV laser is determined by that of the elemental laser as well as the crystal for the frequency conversion. Not long ago, a large-electrical power DUV laser (>ten W) at 258 nm was documented by using a beam 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 better laser machining end result in comparison to the preceding DUV lasers with larger M2.
The heartbeat period of the next Stokes light was shortened to five ns as proven in Determine 7a, one-shot image from the oscilloscope, which happens to be a typical phenomenon in Raman laser [44] whilst the heart beat period with the pump laser was ten ns.
Cesium Lithium Borate (CsLiB6O10 or CLBO) is the simplest non-linear crystal which generates ultraviolet harmonics of your Nd:YAG essential laser wavelength. In order to greatly enhance the destruction threshold, small CLBO area roughness, by extremely-precision machining, is required. Because the CLBO crystal has easy hydroscopic response and micro scratches in machining, extremely-specific machining of the CLBO crystal is usually a complicated complex issue.
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The event from the 193-nm laser was shown by stages of SFG. In an effort to scale the DUV laser power properly, a whole new concept in the 193-nm DUV laser technology is introduced depending on the diamond Raman laser.