The Definitive Guide to CLBO Crystal
The Definitive Guide to CLBO Crystal
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However, as a way to approach the crystal is incredibly Innovative manufacturing techniques are necessary. Because the dawn of the crystal, engaged on this challenge, we at the moment are the sole enterprise on this planet that can be processed In this particular crystal.
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We summarized the current enhancement standing of the superior-electric power DUV laser equally at the wavelength of FHG with the 1-μm laser and at 193 nm. The current advancement on the solid-state/fiber laser, as well as the nonlinear optical crystals, prompts don't just the normal energy but will also the beam top quality (coherence) of the DUV lasers to an unprecedented level.
For illustration, The present concave OC could be replaced by a plane mirror which could mitigate the facility density within the surface area of M1 and also the diamond. Furthermore, making use of large harm threshold coatings for M1 and diamond would also Increase the output electric power with no damages. Then, the NIR laser at the 2nd Stokes wavelength can be large enough, and also its good beam excellent, to generate the final DUV laser at 193 nm that has a higher regular power.
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LBO is also a superb nonlinear crystal which is usually placed on the SHG through the NIR into the green. The DUV laser is normally realized by two phases of SFG from the LBO crystals given that there is absolutely no phase-matching angle for LBO to transform the inexperienced laser at 515 nm or 532 nm to the DUV specifically by SHG [16]. A short while ago, the NSBBF crystal has also proven its possible to get a superior conversion efficiency from 532 nm to 266 nm. The stroll-off angle and deff with the NSBBF are almost just like These of CLBO [seventeen].
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The heart beat period of the second Stokes light-weight was shortened to 5 ns as shown in Determine 7a, just one-shot photo in the oscilloscope, which happens to be a typical phenomenon in Raman laser [44] when the pulse length of your pump laser was 10 ns.
Also, combining the strong-state laser with other nonlinear system including stimulated Raman scattering, NIR lasers could be accomplished at new wavelengths with substantial ability and higher beam good quality, which was examined because of the evidence-of-principle experiment. This Raman laser plan provides a fresh route to the substantial-electric more info power DUV laser, especially in the wavelength of 193 nm.
The beam profile revealed in Figure 7b demonstrated a superb beam excellent as one of several merits of Raman laser, which would be valuable to crank out a 193-nm DUV laser with a high quality beam.
Its UV absorption edge reaches one hundred eighty nm. The efficient nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about twice as significant as that of KDP. CLBO crystals is usually developed from your stoichiometric melt with lessen viscosity.
The development of your 193-nm laser was shown by phases of SFG. So as to scale the DUV laser electrical power effectively, a fresh strategy from the 193-nm DUV laser era is introduced based on the diamond Raman laser.