The best Side of CLBO Crystal

The best Side of CLBO Crystal

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All-solid-state ultraviolet lasers have already been extensively Utilized in the fields of mechanical flaw detection, lithography, micromachining and medicine for the advantages of smaller volume, lengthy daily life, substantial performance, good beam good quality, extensive tuning and slender spectral line, etc. Employing large electricity close to-infrared coherent gentle supply as the fundamental frequency source based upon nonlinear tuning technological know-how, creating ultraviolet coherent radiation by multistage frequency conversion is viewed as a significant technique to acquire the ultraviolet coherent gentle supply.

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We summarized the current advancement status from the superior-electric power DUV laser each at the wavelength of FHG in the one-μm laser and at 193 nm. The recent improvement of your strong-state/fiber laser, together with the nonlinear optical crystals, prompts not simply the typical power but will also the beam quality (coherence) of the DUV lasers to an unparalleled degree.

As an illustration, the current concave OC could get replaced by a airplane mirror which could mitigate the power density to the floor of M1 as well as the diamond. Furthermore, employing higher hurt threshold coatings for M1 and diamond would also Enhance the output electrical power with none damages. Then, the NIR laser at the 2nd Stokes wavelength could be high more than enough, in addition to its great beam high-quality, to make the ultimate DUV laser at 193 nm by using a high common ability.

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LBO can be a superb nonlinear crystal which is often placed on the SHG within the NIR to your eco-friendly. The DUV laser is generally understood by two levels of SFG inside the LBO crystals considering the fact that there is not any period-matching angle for LBO to transform the eco-friendly laser at 515 nm or 532 nm to the DUV right by SHG [16]. Lately, the NSBBF crystal has also shown its possible to acquire a large conversion effectiveness from 532 nm to 266 nm. The wander-off angle and deff of the NSBBF are Virtually comparable to those of CLBO [seventeen].

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In the scientific and industrial purposes, the beam quality of your DUV laser is usually an essential parameter. Especially, the beam high quality of the DUV laser dramatically influences the laser machining final results. The beam excellent on the DUV laser is determined by that of the elemental laser plus the crystal to the frequency conversion. Lately, a high-electric power DUV laser (>10 W) at 258 nm was claimed by using a beam good quality of M2 < one.5, which was created by FHG of a Yb:YAG laser at 1030 nm using the CLBO crystal [13]. This laser would produce a much better laser machining consequence in comparison with the more info past DUV lasers with larger M2.

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The beam profile demonstrated in Figure 7b demonstrated a fantastic beam quality as one of many deserves of Raman laser, which might be beneficial to create a 193-nm DUV laser with a high quality beam.

Its UV absorption edge reaches a hundred and eighty nm. The productive nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about two times as large as that of KDP. CLBO crystals is usually grown from the stoichiometric soften with reduced viscosity.

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