New Step by Step Map For CLBO Crystal
New Step by Step Map For CLBO Crystal
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All-good-condition ultraviolet lasers are greatly Employed in the fields of mechanical flaw detection, lithography, micromachining and medicine for some great benefits of small volume, extended daily life, high efficiency, good beam good quality, large tuning and slender spectral line, and so on. Utilizing higher electricity near-infrared coherent light-weight source as the fundamental frequency source according to nonlinear tuning engineering, generating ultraviolet coherent radiation by multistage frequency conversion is considered an essential way to create the ultraviolet coherent light resource.
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We summarized The existing development position of your substantial-ability DUV laser equally with the wavelength of FHG on the 1-μm laser and at 193 nm. The recent improvement on the stable-state/fiber laser, together with the nonlinear optical crystals, prompts not just the common power but in addition the beam high-quality (coherence) on the DUV lasers to an unparalleled amount.
The common electrical power of your NIR laser continue to has the possible to become enhanced to tens of watts including 70 W [26] When the double-go configuration may be utilized for that Yb:YAG SCF amplifier phase. That's why, When the conversion effectiveness of 31% from NIR to DUV can be however maintained at this increased ability problem, the standard output energy on the DUV laser at 258 nm can be greater than 20 W, which might be considered a impressive ability amount with the DUV laser and lead to the unanticipated DUV laser machining final results. Additionally, for prime-electricity DUV laser, the UV hurt on the nonlinear crystal, including the windows for CLBO crystal plus the mirrors, is yet another essential parameter for long term and secure operation.
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LBO can be an outstanding nonlinear crystal which is often placed on the SHG with the NIR into the environmentally friendly. The DUV laser is generally realized by two levels of SFG from the LBO crystals considering the fact that there is no section-matching angle for LBO to convert the green laser at 515 nm or 532 nm into the DUV specifically by SHG [16]. Recently, the NSBBF crystal has also demonstrated its probable to obtain a large conversion efficiency from 532 nm to 266 nm. The stroll-off angle and deff of the NSBBF are Practically similar to All those of CLBO [17].
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The pulse length of the 2nd Stokes light-weight was shortened to 5 ns as demonstrated in Figure 7a, only one-shot image within the oscilloscope, which can be a typical phenomenon in Raman laser [forty four] whilst the heartbeat length of your pump laser was 10 ns.
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 enrich the injury threshold, low CLBO floor roughness, by ultra-precision machining, is required. Because the CLBO crystal has effortless hydroscopic reaction and micro scratches in machining, extremely-precise machining with the CLBO crystal is actually a complicated specialized trouble.
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Its UV absorption edge reaches one hundred eighty nm. The successful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about 2 times as massive as that of KDP. CLBO crystals can be grown from the stoichiometric melt with lessen viscosity.
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