The smart Trick of CLBO Crystal That No One is Discussing
The smart Trick of CLBO Crystal That No One is Discussing
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Nevertheless, so that you can procedure the crystal is incredibly State-of-the-art production methods are necessary. For the reason that dawn of the crystal, engaged on this obstacle, we at the moment are the one business on this planet that could be processed During this crystal.
In comparison to BBO it characteristics much larger spectral and temperature acceptance, improved angle tolerance, and a smaller sized walk-off angle. from 3289 $ delivery
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The common electrical power in the NIR laser still has the likely to become enhanced to tens of watts including 70 W [26] if the double-go configuration could possibly be used with the Yb:YAG SCF amplifier stage. As a result, If your conversion efficiency of 31% from NIR to DUV may very well be nonetheless managed at this greater power issue, the standard output energy with the DUV laser at 258 nm could be a lot more than twenty W, which might become a amazing energy degree to the DUV laser and bring on the unanticipated DUV laser machining outcomes. In addition, for high-electricity DUV laser, the UV destruction of your nonlinear crystal, such as the windows for CLBO crystal as well as the mirrors, is another important parameter for long-lasting and secure Procedure.
Alternatively, the beam high-quality of the larger ability DUV laser would become even worse on account of a lot more critical thermal and nonlinear results. For this reason, the frequency conversion procedures really should be thoroughly meant to mitigate the aforementioned consequences. Thus, a large-electrical power DUV laser on the FHG of 1 μm with a very good beam quality could be received and can be helpful for acquiring the shorter wavelength DUV lasers including 193 nm by SFG.
LBO can be a wonderful nonlinear crystal which is often placed on the SHG in the NIR into the eco-friendly. The DUV laser will likely be understood by two levels of SFG in the LBO crystals due to the fact there isn't any stage-matching angle for LBO to convert the eco-friendly laser at 515 nm or 532 nm for the DUV straight by SHG [sixteen]. Recently, the NSBBF crystal has also shown its potential to get a substantial conversion effectiveness from 532 nm to 266 nm. The stroll-off angle and deff on the NSBBF are Practically much like People of CLBO [17].
On the opposite facet, the power scaling from the NIR laser is another aspect to CLBO Crystal increase the average power of your 193-nm DUV laser. Because of the lack of the superior-ability amplification Option of your NIR laser (for example at 1553 nm), nonlinear frequency procedures for example optical parameter oscillation (OPO) may very well be applied to make a wavelength converter by shifting the wavelength from one μm to the desired wavelength and acquiring relative better electrical power [21]. Recently, a diamond Raman laser confirmed its ability in obtaining a higher electric power as well as a significant conversion efficiency with the 1st Stokes in the one-μm laser [22,23], which means the possibility for being applied from the 193-nm DUV laser generation as a consequence of its substantial Raman acquire and enormous frequency shift.
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The beam profile demonstrated in Figure 7b shown an excellent beam high quality as one of the merits of Raman laser, which might be useful to create a 193-nm DUV laser with a top quality beam.
The conversion performance from basic NIR to DUV is from five% to 36% according to the documented ends in Table one. Raising the conversion effectiveness will decrease the load on the design and setup of the fundamental laser amplifier as well as the electrical power usage. A superb beam excellent of the fundamental laser will also lead on the expanding of your conversion effectiveness together with the right electric power intensity of your NIR and green laser within the SHG and FHG method, respectively. The very best conversion efficiencies from NIR to eco-friendly and environmentally friendly to DUV laser by usage of CLBO crystal are 70% and close to 50%, respectively [twelve], which corresponds to your conversion performance of 35% from basic to DUV.
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