All-strong-point out ultraviolet lasers have already been broadly Utilized in the fields of mechanical flaw detection, lithography, micromachining and medicine for the advantages of little quantity, lengthy everyday living, substantial performance, fantastic beam quality, vast tuning and narrow spectral line, and so forth. Utilizing significant electrical power near-infrared coherent mild source as the basic frequency source dependant on nonlinear tuning technological know-how, creating ultraviolet coherent radiation by multistage frequency conversion is considered an important solution to produce the ultraviolet coherent light resource.
In comparison to BBO it functions larger sized spectral and temperature acceptance, far better angle tolerance, along with a scaled-down wander-off angle. from 3289 $ shipping
We summarized The existing development standing of the significant-electricity DUV laser both of those with the wavelength of FHG with the 1-μm laser and at 193 nm. The recent advancement of the strong-point out/fiber laser, in addition to the nonlinear optical crystals, prompts not only the normal electric power and also the beam top quality (coherence) of the DUV lasers to an unprecedented degree.
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 of those the 1040 nm and 1078 nm laser originate from just one dual-wavelength Yb-doped fiber laser. Each individual laser is amplified by levels of fiber amplifier and Yb-doped products amplifier, respectively.
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In the scientific and industrial purposes, the beam good quality in the DUV laser is also an important parameter. Specially, the beam high-quality of your DUV laser considerably impacts the laser machining results. The beam excellent in the DUV laser is decided by that of the basic laser and the crystal for that frequency conversion. Not too long ago, a superior-electric power DUV laser (>10 W) at 258 nm was documented which has a beam high quality of M2 < 1.five, which was generated by FHG of a Yb:YAG laser at 1030 nm using the CLBO crystal [13]. This laser would bring on a better laser machining outcome when compared to the former DUV lasers with larger M2.
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The conversion performance from basic NIR to DUV is from five% to 36% according to the claimed leads to Table one. Raising the conversion efficiency will lessen the burden on the design and setup of the basic laser amplifier in addition to the electric powered electrical power use. An excellent beam high-quality of the fundamental laser can even add to the growing on the conversion performance website as well as the appropriate power intensity in the NIR and inexperienced laser from the SHG and FHG process, respectively. The highest conversion efficiencies from NIR to eco-friendly and eco-friendly to DUV laser by usage of CLBO crystal are 70% and all over fifty%, respectively [12], which corresponds towards the conversion efficiency of 35% from essential to DUV.
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