A Simple Key For CLBO Crystal Unveiled
A Simple Key For CLBO Crystal Unveiled
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We summarized The present development position from the higher-electrical power DUV laser each at the wavelength of FHG in the one-μm laser and at 193 nm. The current enhancement of your good-condition/fiber laser, and also the nonlinear optical crystals, prompts not simply the typical electric power but will also the beam top quality (coherence) on the DUV lasers to an unparalleled stage.
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 high quality of this bigger electricity DUV laser would turn out to be even worse because of extra significant thermal and nonlinear effects. That's why, the frequency conversion procedures should be carefully intended to mitigate the aforementioned consequences. So, a high-energy DUV laser on the FHG of 1 μm with a great beam top quality may very well be attained and can be helpful for obtaining the shorter wavelength DUV lasers such as 193 nm by SFG.
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While in the scientific and industrial applications, the beam excellent of your DUV laser is also an important parameter. Particularly, the beam high-quality with the DUV laser substantially impacts the laser machining results. The beam quality on the DUV laser is determined by that of the elemental laser as well as the crystal with the frequency conversion. Not long ago, a superior-electrical power DUV laser (>10 W) at 258 nm was claimed by using a beam high quality of M2 < one.five, which was produced by FHG of the Yb:YAG laser at 1030 nm using the CLBO crystal [13]. This laser would produce a much better laser machining final result when compared with the previous DUV lasers with more substantial M2.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the most effective non-linear crystal which generates get more info ultraviolet harmonics in the Nd:YAG basic laser wavelength. As a way to boost the injury threshold, low CLBO surface roughness, by extremely-precision machining, is required. Since the CLBO crystal has straightforward hydroscopic reaction and micro scratches in machining, extremely-exact machining from the CLBO crystal is really a tough technological challenge.
The beam profile proven in Figure 7b demonstrated a great beam good quality as one of the merits of Raman laser, which would be helpful to deliver a 193-nm DUV laser with a top quality beam.
Its UV absorption edge reaches a hundred and eighty nm. The helpful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about two times as big as that of KDP. CLBO crystals can be grown in the stoichiometric soften with decrease viscosity.
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