Within this paper, The brand new lapping slurry and sharpening slurry are released. And the deliquescence degree of CLBO is fallen to most affordable. A completely new Functioning know-how is also adopted. Following rough polishing, the concentration of ultra-precision polishing slurry is increased correctly. So does the extremely-precision sprucing pace, plus the wiping pace is faster compared to deliquescence speed. The CLBO crystal surface roughness can achieve 1nm and continue to keep the floor excellent very well. Accessibility via your establishment
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We summarized The existing development standing with the high-energy DUV laser equally within the wavelength of FHG from the one-μm laser and at 193 nm. The current growth with the good-state/fiber laser, and also the nonlinear optical crystals, prompts not merely the standard energy and also the beam quality (coherence) in the DUV lasers to an unparalleled 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。
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Due to thermal lens influence while in the sound-point out lasers, If your heating management is inadequate, it is not quick to get the good-condition laser which has a substantial power and also a high beam excellent simultaneously. Just lately, with the event of The skinny disk laser and single-crystal fiber (SCF) laser, a superior-electricity laser at the elemental wavelength (one μm) were realized with an excellent beam excellent Despite having a TEM00 manner beam [four,24], which might be good candidates for the fundamental in the DUV laser era. One more prospect for the elemental is the high-energy fiber laser which might be accomplished by coherent beam combination with M2 benefit a lot less than 1.
On another side, the facility scaling with the NIR laser is an additional aspect to enhance the normal electricity from the 193-nm DUV laser. Due to the deficiency of the large-power amplification Option from the NIR laser (such as at 1553 nm), nonlinear frequency processes which include optical parameter oscillation (OPO) may be placed on create a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength and obtaining relative increased ability [21]. Not too long ago, a diamond Raman laser confirmed its skill in achieving a large electric power in addition to a higher conversion effectiveness on the 1st Stokes with the 1-μm laser [22,23], which implies the chance to generally be used during the 193-nm DUV laser technology because of its high Raman attain and enormous frequency change.
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From the scientific and industrial apps, the beam excellent with the DUV laser is also an essential parameter. Especially, the beam quality of your DUV laser considerably impacts the laser machining outcomes. The beam quality with the DUV laser is decided by that of the basic laser and the crystal for that frequency conversion. Just lately, a high-electricity DUV laser (>ten W) at 258 nm was documented which has a beam high quality of M2 < one.5, which was produced by FHG of the Yb:YAG laser at 1030 nm using the CLBO crystal [13]. This laser would cause a better laser machining end result compared to the previous DUV lasers with greater M2.
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Tunable ultraviolet laser source depending on sound-state dye laser engineering and CsLiB6O10 harmonic generation
The more info conversion effectiveness from fundamental NIR to DUV is from 5% to 36% in accordance with the documented brings about Table one. Growing the conversion performance will lessen the stress on the look and setup of the elemental laser amplifier together with the electric ability consumption. A very good beam good quality of the elemental laser may also lead to your raising with the conversion effectiveness together with the right electricity depth in the NIR and eco-friendly laser during the SHG and FHG procedure, respectively. The highest conversion efficiencies from NIR to inexperienced and green to DUV laser by use of CLBO crystal are 70% and about fifty%, respectively [twelve], which corresponds into the conversion efficiency of 35% from fundamental to DUV.
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