Examine This Report on CLBO Crystal
Examine This Report on CLBO Crystal
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We summarized The present progress standing from the higher-power DUV laser both of those for the wavelength of FHG on the 1-μm laser and at 193 nm. The current development on the solid-state/fiber laser, and also the nonlinear optical crystals, prompts not merely the standard energy and also the beam high quality (coherence) on the DUV lasers to an unprecedented amount.
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 better electrical power DUV laser would become even worse on account of additional critical thermal and nonlinear effects. For this reason, the frequency conversion procedures needs to be meticulously meant to mitigate the aforementioned consequences. Thus, a higher-electrical power DUV laser with the FHG of 1 μm with a very good beam high quality may very well be attained and can be useful for acquiring the shorter wavelength DUV lasers like 193 nm by SFG.
LBO is also a fantastic nonlinear crystal which is always applied to the SHG through the NIR into the green. The DUV laser is normally recognized by two stages of SFG from the LBO crystals because there is not any period-matching angle for LBO to transform the green laser at 515 nm or 532 nm towards the DUV specifically by SHG [sixteen]. Recently, the NSBBF crystal has also shown its potential to acquire a superior conversion effectiveness from 532 nm to 266 nm. The stroll-off angle and deff from the NSBBF are Nearly just like People of CLBO [17].
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The pulse length of the second Stokes gentle was shortened to 5 ns as demonstrated in Determine 7a, an individual-shot picture with the oscilloscope, which can be a standard phenomenon in Raman laser [44] even though the heartbeat period of the pump laser was 10 ns.
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