What Does CLBO Crystal Mean?
What Does CLBO Crystal Mean?
Blog Article
All-stable-condition ultraviolet lasers are greatly Utilized in the fields of mechanical flaw detection, lithography, micromachining and medication for the benefits of smaller quantity, prolonged daily life, substantial efficiency, fantastic beam excellent, broad tuning and narrow spectral line, and so forth. Using substantial electricity around-infrared coherent mild resource as the fundamental frequency resource determined by nonlinear tuning know-how, creating ultraviolet coherent radiation by multistage frequency conversion is thought to be a significant method to acquire the ultraviolet coherent light supply.
In comparison to BBO it options more substantial spectral and temperature acceptance, superior angle tolerance, along with a lesser stroll-off angle. from 3289 $ shipping and delivery
We summarized the current progress position of the higher-energy DUV laser both equally within the wavelength of FHG of the 1-μm laser and at 193 nm. The modern development in the stable-point out/fiber laser, and also the nonlinear optical crystals, prompts not merely the average electricity but will also the beam top quality (coherence) from the DUV lasers to an unprecedented stage.
The average power from the NIR laser however has the likely to become enhanced to tens of watts such as 70 W [26] Should the double-move configuration could be used for the Yb:YAG SCF amplifier stage. Hence, When the conversion performance of 31% from NIR to DUV could possibly be nevertheless maintained at this better power affliction, the typical output ability in the DUV laser at 258 nm can be a lot more than 20 W, which might be a exceptional electric power stage to the DUV laser and bring about the unanticipated DUV laser machining benefits. Also, for prime-electric power DUV laser, the UV problems with the nonlinear crystal, including the windows for CLBO crystal and also the mirrors, is another critical parameter for lasting and steady Procedure.
However, the beam high-quality of the greater electric power DUV laser would turn out to be worse resulting from more critical thermal and nonlinear consequences. Therefore, the frequency conversion processes really should be diligently built to mitigate the aforementioned effects. Thus, a large-electricity DUV laser within the FHG of one μm with a good beam high quality may be received and can be useful for acquiring the shorter wavelength DUV lasers including 193 nm by SFG.
The two the 1040 nm and 1078 nm laser come from a person dual-wavelength Yb-doped fiber laser. Each and every laser is amplified by stages of fiber amplifier and Yb-doped products amplifier, respectively.
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Inside the scientific and industrial programs, the beam high quality of the DUV laser is also a very important parameter. Specially, the beam good quality from the DUV laser radically influences the laser machining results. The beam excellent from the DUV laser is set by that of the fundamental laser along with the crystal for the frequency conversion. Lately, a significant-energy DUV laser (>10 W) at 258 nm was noted that has a beam top quality of M2 < one.five, which was produced by check here FHG of the Yb:YAG laser at 1030 nm utilizing the CLBO crystal [13]. This laser would cause a far better laser machining final result in comparison to the earlier DUV lasers with more substantial M2.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the simplest non-linear crystal which generates ultraviolet harmonics on the Nd:YAG basic laser wavelength. So that you can increase the problems threshold, minimal CLBO surface roughness, by ultra-precision machining, is necessary. Because the CLBO crystal has quick hydroscopic reaction and micro scratches in machining, extremely-precise machining on the CLBO crystal is really a tricky technical challenge.
The beam profile revealed in Determine 7b shown a fantastic beam high-quality as among the deserves of Raman laser, which might be beneficial to produce a 193-nm DUV laser with a high quality beam.
Its UV absorption edge reaches one hundred eighty nm. The effective nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about 2 times as massive as that of KDP. CLBO crystals may be developed through the stoichiometric soften with decrease viscosity.
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