5 Essential Elements For CLBO Crystal
5 Essential Elements For CLBO Crystal
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All-strong-state ultraviolet lasers have been greatly Utilized in the fields of mechanical flaw detection, lithography, micromachining and medication for the benefits of little volume, very long life, significant performance, excellent beam top quality, huge tuning and slender spectral line, and so on. Making use of superior electrical power in close proximity to-infrared coherent light source as the fundamental frequency source based upon nonlinear tuning engineering, creating ultraviolet coherent radiation by multistage frequency conversion is viewed as an important strategy to develop the ultraviolet coherent mild supply.
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In accordance with the evidence-of-principle experiment, the conversion efficiency of 23% implied the potential of accomplishing superior-energy at the second Stokes wavelength in the Raman laser. Should the pump laser of 1078 nm can be attained at the typical electrical power of 50 W, the output ability of its 2nd Stokes wavelength at 1512 nm may very well be much more than 10 W. The look in the Raman laser cavity really should be optimized in an effort to avoid the injury with the M1 and diamond surface area.
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。
On the other hand, the beam top quality of this higher electric power DUV laser would grow to be worse as a result of a lot more significant thermal and nonlinear results. Therefore, the frequency conversion processes should be carefully designed to mitigate the aforementioned outcomes. Consequently, a significant-power DUV laser within the FHG of one μm with a fantastic beam good quality could possibly be received and can be helpful for obtaining the shorter wavelength DUV lasers like 193 nm by SFG.
LBO can be a great nonlinear crystal which is always placed on the SHG within the NIR for the inexperienced. The DUV laser is normally understood by two levels of SFG inside the LBO crystals due to the fact there isn't any stage-matching angle for LBO to transform the environmentally friendly laser at 515 nm or 532 nm to the DUV immediately by SHG [sixteen]. Lately, the NSBBF crystal has also demonstrated its opportunity to obtain a large conversion effectiveness from 532 nm to 266 nm. The wander-off angle and deff on the NSBBF are Just about similar to those of CLBO [seventeen].
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The pulse length of the 2nd Stokes mild was shortened to five ns as shown in Figure 7a, only one-shot image within the oscilloscope, which can be a standard phenomenon in Raman laser [44] even though the heart beat duration with the pump laser was 10 ns.
Cesium Lithium Borate (CsLiB6O10 or CLBO) is the most effective non-linear crystal which generates ultraviolet harmonics in the Nd:YAG basic laser wavelength. In an effort to increase the hurt threshold, very low CLBO floor roughness, by ultra-precision machining, is required. Because the CLBO crystal has simple hydroscopic reaction and micro scratches in machining, ultra-specific machining with the CLBO crystal is usually a complicated technical issue.
Tunable ultraviolet laser source based upon good-state dye laser technology and CsLiB6O10 harmonic era
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The development of the 193-nm laser was shown by phases of SFG. So that you can scale the DUV laser power successfully, a fresh idea on the 193-nm DUV laser generation is presented dependant on the diamond Raman laser.