The smart Trick of CLBO Crystal That No One is Discussing
The smart Trick of CLBO Crystal That No One is Discussing
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All-stable-condition ultraviolet lasers are greatly used in the fields of mechanical flaw detection, lithography, micromachining and medication for the benefits of tiny volume, extended daily life, large efficiency, good beam quality, vast tuning and narrow spectral line, and many others. Making use of large energy near-infrared coherent gentle source as the basic frequency source dependant on nonlinear tuning technological know-how, building ultraviolet coherent radiation by multistage frequency conversion is viewed as a crucial solution to build the ultraviolet coherent light-weight source.
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We summarized The existing growth status of the significant-electrical power DUV laser each for the wavelength of FHG in the one-μm laser and at 193 nm. The current progress in the strong-condition/fiber laser, plus the nonlinear optical crystals, prompts don't just the standard ability but also the beam good quality (coherence) with the DUV lasers to an unparalleled amount.
The true secret challenge of ultraviolet coherent light-weight resource primarily focuses on the development of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is amongst the situations for frequency transformation, so the growth, size, harm resistance, conversion performance and allowable parameter array of nonlinear optical crystal are necessary An increasing number of.
Alternatively, the beam high-quality of this better energy DUV laser would develop into worse on account of extra severe thermal and nonlinear effects. That's why, the frequency conversion procedures must be carefully created to mitigate the get more info aforementioned results. Consequently, a superior-power DUV laser at the FHG of 1 μm with a good beam high quality might be obtained and may be helpful for getting the shorter wavelength DUV lasers for instance 193 nm by SFG.
Both equally the 1040 nm and 1078 nm laser come from 1 twin-wavelength Yb-doped fiber laser. Just about every laser is amplified by phases of fiber amplifier and Yb-doped supplies amplifier, respectively.
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While in the scientific and industrial purposes, the beam excellent in the DUV laser can also be a very important parameter. Specially, the beam high quality of your DUV laser substantially affects the laser machining benefits. The beam quality with the DUV laser is determined by that of the basic laser and the crystal to the frequency conversion. A short while ago, a large-electricity DUV laser (>ten W) at 258 nm was reported using a beam excellent of M2 < one.five, which was created by FHG of the Yb:YAG laser at 1030 nm utilizing the CLBO crystal [thirteen]. This laser would bring on an even better laser machining outcome when compared with the past DUV lasers with larger sized M2.
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Moreover, combining the sound-condition laser with other nonlinear system such as stimulated Raman scattering, NIR lasers might be attained at new wavelengths with substantial electric power and significant beam high-quality, which was analyzed by the evidence-of-theory experiment. This Raman laser scheme offers a fresh route to the superior-electric power DUV laser, In particular with the wavelength of 193 nm.
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