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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All-good-state ultraviolet lasers have been broadly Employed in the fields of mechanical flaw detection, lithography, micromachining and drugs for the advantages of modest volume, lengthy everyday living, superior performance, very good beam good quality, vast tuning and slender spectral line, and so forth. Utilizing substantial electricity close to-infrared coherent light-weight supply as the elemental frequency supply dependant on nonlinear tuning technology, generating ultraviolet coherent radiation by multistage frequency conversion is viewed as an essential method to establish the ultraviolet coherent mild supply.
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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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As a result of thermal lens impact in the stable-condition lasers, In the event the heating administration is insufficient, It isn't quick to obtain the solid-condition laser having a significant electrical power and a substantial beam quality simultaneously. Not long ago, with the event of the thin disk laser and solitary-crystal fiber (SCF) laser, a significant-power laser at the basic wavelength (one μm) had been realized with a superb beam high-quality even with a TEM00 mode beam [4,24], which might be great candidates for the fundamental in the DUV laser era. A different prospect for the fundamental may be the large-electricity fiber laser which may be realized by coherent beam blend with M2 worth lower than 1.
On another side, the facility scaling with the NIR laser is an additional facet to raise the regular electrical power from the 193-nm DUV laser. Due to the deficiency of the large-power amplification Option from the NIR laser (such as at 1553 nm), nonlinear frequency processes for instance optical parameter oscillation (OPO) could possibly be placed on build a wavelength converter by shifting the wavelength from 1 μm to the specified wavelength along with getting relative higher electricity [21]. A short while ago, a diamond Raman laser showed its potential in acquiring a high electrical power plus a significant conversion performance at the 1st Stokes from the 1-μm laser [22,23], which implies the likelihood to get utilized while in the 193-nm DUV laser era on account of its substantial Raman achieve and huge frequency shift.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the most effective non-linear crystal which generates ultraviolet harmonics from the Nd:YAG fundamental laser wavelength. In order to enrich the problems 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-specific machining with the CLBO crystal can be a hard specialized issue.
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