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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Based on the proof-of-principle experiment, the conversion efficiency of 23% implied the potential of achieving higher-electrical power at the second Stokes wavelength from the Raman laser. In the event the pump laser of 1078 nm may be acquired at the typical energy of 50 W, the output ability of its 2nd Stokes wavelength at 1512 nm could be more than 10 W. The look of your Raman laser cavity need to be optimized in an effort to steer clear of the hurt of your M1 and diamond floor.
全固态紫外激光器以其体积小、寿命长、效率高、光束质量好、调谐范围宽、谱线窄等优点，广泛应用于机械探伤、光刻、微加工和医学等领域，等，利用大功率近红外相干光源作为基于非线性调谐技术的基频源，通过多级变频产生紫外相干辐射被认为是发展紫外相干光源的重要途径。紫外相干光源的关键问题是研制紫外波段的非线性光学变频晶体。非线性光学晶体是实现频率变换的条件之一，因此对非线性光学晶体的生长、尺寸、损伤电阻、转换效率和允许的参数范围提出了越来越高的要求。
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LBO can be a great nonlinear crystal which is usually placed on the SHG from your NIR into the eco-friendly. The DUV laser is usually recognized by two levels of SFG during the LBO crystals given that there is not any phase-matching angle for LBO to convert the inexperienced laser at 515 nm or 532 nm into the DUV directly by SHG [16]. Just lately, the NSBBF crystal has also demonstrated its probable to obtain a substantial conversion effectiveness from 532 nm to 266 nm. The walk-off angle and deff from the NSBBF are Nearly much like People of CLBO [17].
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While in the scientific and industrial apps, the beam high-quality from the DUV laser is usually an important parameter. Specially, the beam top quality of the DUV laser substantially has an effect on the laser machining effects. The beam excellent on the DUV laser is decided by that of the basic laser and the crystal with the frequency conversion. Lately, a high-power DUV laser (>10 W) at 258 nm was documented which has a beam high-quality of M2 < one.5, which was generated by FHG of the Yb:YAG laser at 1030 nm using the CLBO crystal [13]. This laser would produce an even better laser machining end result when compared to the earlier DUV lasers with bigger M2.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the simplest non-linear crystal which generates ultraviolet harmonics with the Nd:YAG elementary laser wavelength. So that you can greatly enhance the destruction threshold, small CLBO area roughness, by extremely-precision machining, is required. Since the CLBO crystal has effortless hydroscopic reaction and micro scratches in machining, ultra-specific machining of your CLBO crystal is usually a complicated technological challenge.
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The conversion performance from essential NIR to DUV is from 5% to 36% based on the noted brings about Table 1. Rising the conversion effectiveness will lessen the stress on the design and set up of the fundamental laser amplifier along with the electrical electricity usage. A very good beam top website quality of the elemental laser will also add into the expanding on the conversion efficiency and also the suitable electrical power intensity from the NIR and eco-friendly laser inside the SHG and FHG course of action, respectively. The very best conversion efficiencies from NIR to inexperienced and environmentally friendly to DUV laser by utilization of CLBO crystal are 70% and around 50%, respectively [twelve], which corresponds to the conversion efficiency of 35% from elementary to DUV.
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