Examine This Report on CLBO Crystal
Examine This Report on CLBO Crystal
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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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Mainly because of the thermal lens influence from the reliable-state lasers, When the heating administration is insufficient, It isn't quick to obtain the good-condition laser by using a high electric power as well as a significant beam high quality concurrently. Recently, with the development of the thin disk laser and solitary-crystal fiber (SCF) laser, a superior-electrical power laser at the elemental wavelength (1 μm) had been understood with a superb beam quality Despite a TEM00 method beam [four,24], which might be good candidates for the fundamental on the DUV laser era. One more candidate for the fundamental will be the large-energy fiber laser which could possibly be reached by coherent beam mixture with M2 worth lower than one.
On the opposite aspect, the power scaling of your NIR laser is yet another part to boost the regular electricity of your 193-nm DUV laser. Because of the lack of the high-ability amplification Option in the NIR laser (for instance at 1553 nm), nonlinear frequency procedures including optical parameter oscillation (OPO) could be applied to build a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength as well as obtaining relative increased ability [21]. Not too long ago, a diamond Raman laser confirmed its capability in obtaining a superior power as well as a substantial conversion effectiveness for the 1st Stokes of your one-μm laser [22,23], which means the chance for being applied in the 193-nm DUV laser technology because of its substantial Raman achieve and enormous frequency shift.
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The heart beat period of the 2nd Stokes light-weight was shortened to five ns as proven in Figure 7a, a single-shot photograph with the oscilloscope, that's a common phenomenon in Raman laser [forty four] although the heart beat duration of your pump laser was ten ns.
Also, combining the reliable-point out laser with other nonlinear process which include stimulated Raman scattering, NIR lasers may very well be reached at new wavelengths with large electrical power and higher beam top quality, which was tested with the proof-of-basic principle experiment. This Raman laser scheme delivers a completely new route to the substantial-energy DUV laser, Primarily on the wavelength of 193 nm.
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Its UV absorption edge reaches a hundred and eighty nm. The efficient nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about two times as substantial as that of KDP. CLBO crystals can be developed through the stoichiometric soften with decrease viscosity.
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