CLBO Crystal Can Be Fun For Anyone
CLBO Crystal Can Be Fun For Anyone
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All-reliable-condition ultraviolet lasers are commonly used in the fields of mechanical flaw detection, lithography, micromachining and medication for the benefits of compact volume, lengthy lifetime, higher performance, good beam top quality, large tuning and narrow spectral line, and many others. Employing significant energy around-infrared coherent light-weight source as the basic frequency source based upon nonlinear tuning technologies, producing ultraviolet coherent radiation by multistage frequency conversion is thought to be a significant approach to establish the ultraviolet coherent light-weight supply.
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We summarized The existing advancement status from the high-ability DUV laser both equally in the wavelength of FHG of the one-μm laser and at 193 nm. The current development with the reliable-condition/fiber laser, along with the nonlinear optical crystals, prompts not simply the average electricity but will also the beam high-quality (coherence) from the DUV lasers to an unparalleled level.
The average power of your NIR laser however has the prospective to become enhanced to tens of watts for instance 70 W [26] In case the double-pass configuration can be utilized with the Yb:YAG SCF amplifier phase. That's why, When the conversion performance of 31% from NIR to DUV may be nonetheless taken care of at this higher ability problem, the average output electricity of your DUV laser at 258 nm might be a lot more than twenty W, which might certainly be a remarkable electrical power stage with the DUV laser and lead to the unanticipated DUV laser machining outcomes. In addition, for prime-electrical power DUV laser, the UV problems of the nonlinear crystal, including the windows for CLBO crystal and also the mirrors, is another significant parameter for long-lasting and steady operation.
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LBO is usually a superb nonlinear crystal which is usually placed on the SHG from your NIR to your green. The DUV laser is normally recognized by two stages of SFG inside the LBO crystals considering the fact that there isn't any phase-matching angle for LBO to convert the inexperienced laser at 515 nm or 532 nm to your DUV straight by SHG [16]. A short while ago, the NSBBF crystal has also revealed its potential to obtain a high conversion performance from 532 nm to 266 nm. The stroll-off angle and deff on the NSBBF are Practically just like Individuals of CLBO [17].
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Moreover, combining the stable-state laser with other nonlinear course of action for instance stimulated Raman scattering, NIR lasers may be achieved at new wavelengths with substantial power and more info substantial beam high-quality, which was tested with the proof-of-principle experiment. This Raman laser scheme gives a whole new path to the significant-ability DUV laser, especially in the wavelength of 193 nm.
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Its UV absorption edge reaches a hundred and eighty nm. The helpful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about twice as significant as that of KDP. CLBO crystals is often grown from the stoichiometric melt with lessen viscosity.
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