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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During this paper, the new lapping slurry and sharpening slurry are introduced. Along with the deliquescence diploma of CLBO is fallen to cheapest. A brand new Doing work know-how can be adopted. Right after rough polishing, the focus of ultra-precision sprucing slurry is elevated thoroughly. So does the extremely-precision sprucing pace, and the wiping velocity is quicker as opposed to deliquescence velocity. The CLBO crystal surface roughness can reach 1nm and retain the surface high-quality very well. Access via your establishment
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In accordance with the proof-of-basic principle experiment, the conversion performance of 23% implied the potential of obtaining significant-ability at the second Stokes wavelength of your Raman laser. Should the pump laser of 1078 nm may very well be attained at the standard power of 50 W, the output energy of its 2nd Stokes wavelength at 1512 nm may very well be a lot more than 10 W. The look on the Raman laser cavity must be optimized so as to avoid the problems on the M1 and diamond surface.
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 is additionally an excellent nonlinear crystal which is usually placed on the SHG with the NIR towards the environmentally friendly. The DUV laser is normally recognized by two levels of SFG within the LBO crystals due to the fact there is absolutely no period-matching angle for LBO to transform the eco-friendly laser at 515 nm or 532 nm on the DUV directly by SHG [sixteen]. Not too long ago, the NSBBF crystal has also revealed its probable to acquire a higher conversion efficiency from 532 nm to 266 nm. The walk-off angle and deff with the NSBBF are Virtually much like Those people of CLBO [17].
On the opposite aspect, the facility scaling on the NIR laser is another element to boost the regular electricity on the 193-nm DUV laser. A result of the insufficient the large-electrical power amplification Answer of the NIR laser (such as at 1553 nm), nonlinear frequency procedures for instance optical parameter oscillation (OPO) could possibly be placed on develop a wavelength converter by shifting the wavelength from one μm to the specified wavelength together with obtaining relative better electricity [21]. A short while ago, a diamond Raman laser showed its means in attaining a superior ability and also a high conversion performance on the 1st Stokes in the one-μm laser [22,23], which means the possibility being used in the 193-nm DUV laser era because of its large Raman obtain and huge frequency change.
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The beam profile proven in Figure 7b demonstrated a very good beam high-quality as among the list of deserves of Raman laser, which might be helpful to produce a 193-nm DUV laser with a top quality beam.
The conversion efficiency from basic NIR to DUV is from five% to 36% in accordance with the reported leads to Table 1. Rising the conversion effectiveness will decrease the stress on the look and set up of the basic laser amplifier and also the electric powered energy consumption. A good website beam high quality of the fundamental laser may also add into the expanding with the conversion efficiency together with the right power depth of your NIR and environmentally friendly laser from the SHG and FHG approach, respectively. The highest conversion efficiencies from NIR to environmentally friendly and inexperienced to DUV laser by use of CLBO crystal are 70% and all over 50%, respectively [12], which corresponds to your conversion efficiency of 35% from essential to DUV.
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