The Greatest Guide To CLBO Crystal
The Greatest Guide To CLBO Crystal
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We summarized the current enhancement standing with the substantial-electrical power DUV laser the two at the wavelength of FHG with the 1-μm laser and at 193 nm. The modern growth of the reliable-point out/fiber laser, in addition to the nonlinear optical crystals, prompts not merely the standard energy but additionally the beam excellent (coherence) with the DUV lasers to an unprecedented 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。
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The two the 1040 nm and 1078 nm laser come from 1 dual-wavelength Yb-doped fiber laser. Each individual laser is amplified by phases of fiber amplifier and Yb-doped products amplifier, respectively.
On another aspect, the power scaling in the NIR laser is another aspect to increase the ordinary electrical power from the 193-nm DUV laser. Due to insufficient the higher-electrical power amplification Alternative of your NIR laser (for instance at 1553 nm), nonlinear frequency procedures which include optical parameter oscillation (OPO) may very well be applied to build a wavelength converter by shifting the wavelength from one μm to the desired wavelength and obtaining relative larger energy [21]. Not too long ago, a diamond Raman laser showed its capacity in attaining a superior energy along with a high conversion performance for the 1st Stokes of the one-μm laser [22,23], which means the chance being utilized during the 193-nm DUV laser era due to its significant Raman get and large frequency change.
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The heart beat length of the second Stokes mild was shortened to five ns as demonstrated in Figure 7a, a single-shot photo from the oscilloscope, that is a standard phenomenon in Raman laser [forty four] even though the pulse length of the pump laser was 10 ns.
What's more, combining the sound-point out laser with other nonlinear system such as stimulated Raman scattering, NIR lasers could be reached at new wavelengths with substantial ability and significant beam quality, which was tested from the proof-of-principle experiment. This Raman laser plan provides a whole new path to the superior-electric power DUV laser, Particularly within the wavelength of 193 nm.
The beam profile demonstrated in Figure 7b shown a fantastic beam excellent as one of many deserves of Raman laser, which would be effective to create a 193-nm DUV laser with a top quality beam.
The conversion performance from essential NIR to DUV is from five% to 36% in accordance with the noted leads to Table 1. Increasing the conversion efficiency will lessen the stress on the look and set up of the basic laser amplifier in addition to the electric electricity consumption. A great beam high quality of the elemental laser can even lead towards the raising in the conversion efficiency in website addition to the right electrical power intensity with the NIR and green laser from the SHG and FHG process, respectively. The highest conversion efficiencies from NIR to green and inexperienced to DUV laser by usage of CLBO crystal are 70% and close to fifty%, respectively [twelve], which corresponds for the conversion performance of 35% from fundamental to DUV.
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