Indicators on CLBO Crystal You Should Know
Indicators on CLBO Crystal You Should Know
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With this paper, the new lapping slurry and sharpening slurry are launched. And also the deliquescence diploma of CLBO is fallen to lowest. A whole new working technological innovation is likewise adopted. Just after tough sprucing, the focus of extremely-precision sharpening slurry is greater thoroughly. So does the extremely-precision sharpening pace, plus the wiping speed is faster as opposed to deliquescence speed. The CLBO crystal surface area roughness can accomplish 1nm and hold the floor excellent very well. Accessibility via your institution
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For example, the current concave OC could get replaced by a aircraft mirror which could mitigate the power density on the floor of M1 along with the diamond. Furthermore, using higher destruction threshold coatings for M1 and diamond would also Enhance the output power with no damages. Then, the NIR laser for the 2nd Stokes wavelength might be significant plenty of, along with its great beam excellent, to create the ultimate DUV laser at 193 nm with a higher ordinary energy.
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LBO is likewise a great nonlinear crystal which is often placed on the SHG from the NIR towards the inexperienced. The DUV laser is frequently understood by two phases of SFG during the LBO crystals given that there isn't a period-matching angle for LBO to transform the inexperienced laser at 515 nm or 532 nm to your DUV instantly by SHG [sixteen]. Not long ago, the NSBBF crystal has also shown its possible to obtain a large conversion efficiency from 532 nm to 266 nm. The walk-off angle and deff in the NSBBF are Practically much like All those of CLBO [seventeen].
On the other aspect, the power scaling with the NIR laser is another component to improve the regular CLBO Crystal energy with the 193-nm DUV laser. A result of the not enough the large-ability amplification Alternative on the NIR laser (for instance at 1553 nm), nonlinear frequency processes for instance optical parameter oscillation (OPO) might be applied to produce a wavelength converter by shifting the wavelength from one μm to the specified wavelength together with getting relative better ability [21]. Recently, a diamond Raman laser confirmed its means in achieving a large electrical power plus a significant conversion performance within the 1st Stokes of your one-μm laser [22,23], which means the chance being applied inside the 193-nm DUV laser era as a consequence of its substantial Raman gain and large frequency shift.
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While in the scientific and industrial apps, the beam excellent with the DUV laser is usually a very important parameter. Particularly, the beam quality on the DUV laser substantially affects the laser machining success. The beam good quality from the DUV laser is decided by that of the fundamental laser as well as crystal to the frequency conversion. Lately, a significant-electricity DUV laser (>ten W) at 258 nm was documented which has a beam top quality of M2 < one.five, which was generated by FHG of a Yb:YAG laser at 1030 nm using the CLBO crystal [thirteen]. This laser would produce a far better laser machining end result when compared with the earlier DUV lasers with larger sized M2.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the best non-linear crystal which generates ultraviolet harmonics on the Nd:YAG elementary laser wavelength. So as to increase the injury threshold, minimal CLBO surface roughness, by extremely-precision machining, is required. Because the CLBO crystal has quick hydroscopic reaction and micro scratches in machining, extremely-specific machining in the CLBO crystal is actually a tricky technical challenge.
The beam profile revealed in Figure 7b demonstrated an excellent beam good quality as on the list of deserves of Raman laser, which might be advantageous to create a 193-nm DUV laser with a high quality beam.
Its UV absorption edge reaches 180 nm. The helpful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about two times as huge as that of KDP. CLBO crystals may be developed with the stoichiometric soften with decrease viscosity.
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