The 2-Minute Rule for CLBO Crystal
The 2-Minute Rule for CLBO Crystal
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In this particular paper, the new lapping slurry and sprucing slurry are released. And also the deliquescence degree of CLBO is fallen to lowest. A fresh Performing technologies is additionally adopted. Just after rough sprucing, the focus of extremely-precision sprucing slurry is improved appropriately. So does the ultra-precision polishing speed, and the wiping velocity is quicker when compared to the deliquescence pace. The CLBO crystal surface area roughness can accomplish 1nm and hold the floor good quality effectively. Access as a result of your institution
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We summarized the current enhancement standing of the superior-electricity DUV laser both within the wavelength of FHG in the one-μm laser and at 193 nm. The latest development on the solid-condition/fiber laser, as well as the nonlinear optical crystals, prompts not simply the average electricity but also the beam good quality (coherence) of the DUV lasers to an unprecedented degree.
As an illustration, the current concave OC could get replaced by a aircraft mirror which could mitigate the power density to the floor of M1 as well as the diamond. Furthermore, employing large damage threshold coatings for M1 and diamond would also Enhance the output power with none damages. Then, the NIR laser in the 2nd Stokes wavelength can be large ample, along with its superior beam good quality, to generate the final DUV laser at 193 nm that has a high common energy.
However, the beam high-quality of this increased ability DUV laser would come to be worse on account of extra severe thermal and nonlinear outcomes. Consequently, the frequency conversion procedures need to be cautiously meant to mitigate the aforementioned effects. Hence, a superior-energy DUV laser on the FHG of 1 μm with an excellent beam top quality may be acquired and can be useful for acquiring the shorter wavelength DUV lasers including 193 nm by SFG.
A result of the thermal lens result inside the solid-point out lasers, If your heating management is inadequate, It isn't uncomplicated to obtain the reliable-point out laser having a significant ability plus a higher beam quality concurrently. Not too long ago, with the development of the thin disk laser and solitary-crystal fiber (SCF) laser, a high-power laser at the elemental wavelength (1 μm) had been recognized with an excellent beam high quality even with a TEM00 mode beam [four,24], which would be excellent candidates for the fundamental on the DUV laser era. Yet another applicant for the elemental is definitely the significant-electricity fiber laser which could possibly be achieved by coherent beam blend with M2 value fewer than 1.
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During the scientific and industrial apps, the beam good quality on the DUV laser can be a vital parameter. Specifically, the beam top quality of the DUV laser radically influences the laser machining final results. The beam quality with the DUV laser is determined by that of the elemental laser as well as the crystal with the frequency conversion. Lately, a superior-electricity DUV laser (>10 W) at 258 nm was reported with a beam good quality of M2 < one.five, which was generated by FHG of a Yb:YAG laser at 1030 nm utilizing the CLBO crystal [thirteen]. This laser would website result in an even better laser machining result when compared with the former DUV lasers with bigger M2.
The heart beat duration of the 2nd Stokes mild was shortened to five ns as proven in Determine 7a, just one-shot photograph from your oscilloscope, which is a standard phenomenon in Raman laser [forty four] whilst the pulse length of your pump laser was ten ns.
In addition, combining the strong-condition laser with other nonlinear approach which include stimulated Raman scattering, NIR lasers can be achieved at new wavelengths with significant energy and higher beam good quality, which was tested by the evidence-of-theory experiment. This Raman laser plan offers a whole new path to the higher-electric power DUV laser, Primarily in the wavelength of 193 nm.
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