CLBO Crystal Can Be Fun For Anyone
CLBO Crystal Can Be Fun For Anyone
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All-solid-state ultraviolet lasers are already greatly used in the fields of mechanical flaw detection, lithography, micromachining and medicine for the advantages of little volume, extensive lifetime, substantial performance, fantastic beam high-quality, large tuning and narrow spectral line, etc. Employing large energy in close proximity to-infrared coherent light-weight source as the fundamental frequency source dependant on nonlinear tuning technologies, producing ultraviolet coherent radiation by multistage frequency conversion is considered to be a very important technique to acquire the ultraviolet coherent mild resource.
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We summarized The existing advancement status from the high-electric power DUV laser the two at the wavelength of FHG on the one-μm laser and at 193 nm. The latest growth from the stable-point out/fiber laser, plus the nonlinear optical crystals, prompts not simply the average electricity but will also the beam high quality (coherence) on the DUV lasers to an unparalleled amount.
The typical energy of your NIR laser even now has the possible to become enhanced to tens of watts for example 70 W [26] When the double-go configuration could be used for your Yb:YAG SCF amplifier phase. Therefore, Should the conversion efficiency of 31% from NIR to DUV could be even now maintained at this increased ability condition, the common output electric power from the DUV laser at 258 nm can be over 20 W, which would be considered a impressive electric power degree with the DUV laser and cause the unanticipated DUV laser machining outcomes. In addition, for high-ability DUV laser, the UV destruction of your nonlinear crystal, including the windows for CLBO crystal and also the mirrors, is yet another significant parameter for lasting and steady operation.
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LBO can also be an outstanding nonlinear crystal which is often applied to the SHG from your NIR to your green. The DUV laser is normally recognized by two stages of SFG while in the LBO crystals considering the fact that there isn't any stage-matching angle for LBO to convert the environmentally friendly laser at 515 nm or 532 nm into the DUV directly by SHG [sixteen]. Recently, the NSBBF crystal has also shown its potential to acquire a significant conversion effectiveness from 532 nm to 266 nm. The stroll-off angle and deff of your NSBBF are Pretty much just like People of CLBO [17].
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What's click here more, combining the sound-point out laser with other nonlinear procedure for instance stimulated Raman scattering, NIR lasers might be reached at new wavelengths with superior energy and substantial beam high-quality, which was tested through the proof-of-theory experiment. This Raman laser scheme gives a new path to the significant-ability DUV laser, Particularly on the wavelength of 193 nm.
The beam profile shown in Figure 7b demonstrated an excellent beam good quality as on the list of deserves of Raman laser, which might be effective to generate a 193-nm DUV laser with a top quality beam.
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