5 Simple Statements About CLBO Crystal Explained
5 Simple Statements About CLBO Crystal Explained
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All-solid-state ultraviolet lasers have already been commonly Employed in the fields of mechanical flaw detection, lithography, micromachining and drugs for the benefits of smaller quantity, very long everyday living, higher efficiency, superior beam high-quality, extensive tuning and narrow spectral line, and so forth. Utilizing superior electric power around-infrared coherent gentle supply as the fundamental frequency resource based upon nonlinear tuning technological know-how, building ultraviolet coherent radiation by multistage frequency conversion is regarded as a significant strategy to build 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。
Conversely, the beam good quality of this larger ability DUV laser would grow to be even worse as a result of additional serious thermal and nonlinear results. Therefore, the frequency conversion processes need to be very carefully built to mitigate the aforementioned consequences. Thus, a higher-electrical power DUV laser with the FHG of 1 μm with a very good beam quality could be attained and can be useful for acquiring the shorter wavelength DUV lasers for example 193 nm by SFG.
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On one other facet, the ability scaling in the NIR laser is another component to enhance the regular electrical power of the 193-nm DUV laser. Mainly because of the insufficient the high-electric power amplification Remedy in the NIR laser (by way of example at 1553 nm), nonlinear frequency processes for example optical parameter oscillation (OPO) might be applied to produce a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength and also getting relative greater electricity [21]. A short while ago, a diamond Raman laser showed its capability in obtaining a significant energy and also a superior conversion performance within the 1st Stokes of the one-μm laser [22,23], which means the chance being used from the 193-nm DUV laser era on account of its substantial Raman obtain and large frequency change.
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The pulse period of the second Stokes light-weight was shortened to 5 ns as revealed in Figure 7a, one-shot photograph through the oscilloscope, that is a standard phenomenon in Raman laser [44] though the heartbeat period from the pump laser was ten ns.
Furthermore, combining the good-state laser with other nonlinear course of action like stimulated Raman scattering, NIR lasers could possibly be obtained at new wavelengths with large energy and significant beam high-quality, which was analyzed by the proof-of-basic principle experiment. This Raman laser plan delivers a completely new route to the large-energy DUV laser, Primarily at the wavelength of 193 nm.
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The development of the 193-nm laser was demonstrated by phases of SFG. In order to scale the DUV laser electricity effectively, a whole new concept on the 193-nm DUV laser generation is presented based upon the diamond Raman laser.