CLBO Crystal Things To Know Before You Buy
CLBO Crystal Things To Know Before You Buy
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All-reliable-point out ultraviolet lasers happen to be extensively Utilized in the fields of mechanical flaw detection, lithography, micromachining and drugs for some great benefits of small volume, extended existence, substantial effectiveness, great beam top quality, broad tuning and slender spectral line, and many others. Using higher power in the vicinity of-infrared coherent mild resource as the basic frequency source depending on nonlinear tuning technological innovation, producing ultraviolet coherent radiation by multistage frequency conversion is regarded as a very important method to acquire the ultraviolet coherent light supply.
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We summarized the current enhancement position with the substantial-electrical power DUV laser the two with the wavelength of FHG in the one-μm laser and at 193 nm. The new progress on the stable-point out/fiber laser, and also the nonlinear optical crystals, prompts don't just the typical electricity but also the beam top quality (coherence) on the DUV lasers to an unparalleled 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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Both the 1040 nm and 1078 nm laser come from a person dual-wavelength Yb-doped fiber laser. Each and every laser is amplified by phases of fiber amplifier and Yb-doped components amplifier, respectively.
On the opposite facet, the facility scaling on the NIR laser is an additional aspect to enhance the typical ability in the 193-nm DUV laser. Due to the insufficient the superior-electrical power amplification Option of the NIR laser (for example at 1553 nm), nonlinear frequency processes such as optical parameter oscillation (OPO) may be placed on develop a wavelength converter by shifting the wavelength from one μm to the specified wavelength and getting relative higher power [21]. Just lately, a diamond Raman laser confirmed its means in reaching a large power along with a large conversion performance within the 1st Stokes with the 1-μm laser [22,23], which implies the possibility to become used while in the 193-nm DUV laser era on account of its substantial Raman achieve and huge frequency here shift.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the simplest non-linear crystal which generates ultraviolet harmonics of the Nd:YAG essential laser wavelength. To be able to improve the harm threshold, reduced CLBO surface roughness, by extremely-precision machining, is required. Since the CLBO crystal has effortless hydroscopic reaction and micro scratches in machining, extremely-specific machining in the CLBO crystal is really a difficult complex problem.
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The conversion effectiveness from basic NIR to DUV is from five% to 36% based on the reported brings about Table one. Growing the conversion performance will reduce the load on the look and setup of the basic laser amplifier along with the electrical power usage. A very good beam top quality of the basic laser will likely contribute for the raising of the conversion efficiency as well as the appropriate electrical power intensity with the NIR and environmentally friendly laser in the SHG and FHG procedure, respectively. The highest conversion efficiencies from NIR to inexperienced and environmentally friendly to DUV laser by utilization of CLBO crystal are 70% and all around 50%, respectively [12], which corresponds to the conversion efficiency of 35% from essential to DUV.
The event on the 193-nm laser was demonstrated by phases of SFG. In order to scale the DUV laser electricity efficiently, a new principle of the 193-nm DUV laser generation is offered dependant on the diamond Raman laser.