The 2-Minute Rule for CLBO Crystal
The 2-Minute Rule for CLBO Crystal
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All-reliable-point out ultraviolet lasers are actually greatly used in the fields of mechanical flaw detection, lithography, micromachining and medicine for some great benefits of smaller volume, lengthy life, substantial efficiency, superior beam good quality, huge tuning and narrow spectral line, and so on. Employing large ability in close proximity to-infrared coherent light-weight supply as the basic frequency source based on nonlinear tuning technology, building ultraviolet coherent radiation by multistage frequency conversion is viewed as a crucial solution to acquire the ultraviolet coherent light supply.
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Based on the evidence-of-basic principle experiment, the conversion performance of 23% implied the possibility of accomplishing superior-electricity at the next Stokes wavelength with the Raman laser. In the event the pump laser of 1078 nm may be obtained at the average electrical power of 50 W, the output electricity of its 2nd Stokes wavelength at 1512 nm may very well be a lot more than 10 W. The design in the Raman laser cavity really should be optimized in an effort to stay away from the injury with the M1 and diamond 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。
Conversely, the beam good quality of this bigger electric power DUV laser would turn into even worse as a result of far more really serious thermal and nonlinear results. As a result, the frequency conversion processes really should be cautiously designed to mitigate the aforementioned consequences. Hence, a large-power DUV laser in the FHG of one μm with a great beam top quality might be received and can be helpful for obtaining the shorter wavelength DUV lasers including 193 nm by SFG.
Due to the thermal lens result from the good-condition lasers, When the heating management is inadequate, It isn't simple to get the sound-state laser using a substantial ability and also a significant beam excellent at the same time. Recently, with the event of The skinny disk laser and solitary-crystal fiber (SCF) laser, a large-energy laser at the fundamental wavelength (1 μm) had been realized with a fantastic beam high-quality even with a TEM00 manner beam [four,24], which might be fantastic candidates for the basic in the DUV laser generation. A further prospect for the basic is the superior-electricity fiber laser which might be attained by coherent beam combination with M2 benefit under one.
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The conversion effectiveness from basic NIR to DUV is from five% to 36% based on the described ends in Desk 1. Increasing the conversion performance will reduce the burden on the look and setup of the basic laser amplifier together with the electric powered electricity consumption. A fantastic beam high quality of the basic laser will also contribute to your increasing of your conversion efficiency together with the appropriate electricity intensity in the NIR and inexperienced laser in the SHG and FHG approach, respectively. The best conversion efficiencies from NIR to inexperienced and green to DUV laser by usage of CLBO crystal are 70% and about fifty%, respectively [twelve], which corresponds to your conversion effectiveness of 35% from elementary to DUV.
The event in the 193-nm laser was demonstrated by phases of SFG. As a way to scale the DUV laser ability successfully, a brand new concept with the 193-nm DUV laser generation is presented determined by the diamond Raman laser.