Examine This Report on CLBO Crystal
Examine This Report on CLBO Crystal
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All-solid-point out ultraviolet lasers have been widely Utilized in the fields of mechanical flaw detection, lithography, micromachining and drugs for some great benefits of little volume, long life, high performance, very good beam good quality, broad tuning and slim spectral line, and so on. Using large energy in the vicinity of-infrared coherent gentle source as the basic frequency source dependant on nonlinear tuning engineering, generating ultraviolet coherent radiation by multistage frequency conversion is viewed as a crucial solution to build the ultraviolet coherent gentle resource.
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For illustration, the current concave OC could get replaced by a plane mirror which could mitigate the ability density about the surface of M1 as well as the diamond. Furthermore, applying significant harm threshold coatings for M1 and diamond would also Increase the output electrical power with none damages. Then, the NIR laser on the 2nd Stokes wavelength could be substantial sufficient, together with its fantastic beam high quality, to make the ultimate DUV laser at 193 nm having a high common ability.
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LBO is also a great nonlinear crystal which is usually placed on the SHG from the NIR for the inexperienced. The DUV laser is usually realized by two stages of SFG inside the LBO crystals due to the fact there's no period-matching angle for LBO to transform the inexperienced laser at 515 nm or 532 nm to your DUV instantly by SHG [sixteen]. Not long ago, the NSBBF crystal has also demonstrated its probable to get a large conversion efficiency from 532 nm to 266 nm. The walk-off angle and deff of your NSBBF are Nearly similar to These of CLBO [seventeen].
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The heart beat length of the 2nd Stokes gentle was shortened to 5 ns as demonstrated in Figure 7a, one-shot picture within the oscilloscope, that's a common phenomenon in Raman laser [44] though the heartbeat period in the pump laser was ten ns.
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Tunable ultraviolet laser resource based on solid-state dye laser technologies and CsLiB6O10 harmonic generation
The conversion effectiveness from fundamental NIR to DUV is from five% to 36% according to the reported ends in Desk 1. Expanding the conversion efficiency will decrease the burden on the design and set up of the fundamental laser amplifier plus the electrical power usage. A fantastic beam quality of the fundamental laser can even add to the escalating on the conversion efficiency together with the right power intensity from the NIR and eco-friendly laser inside the SHG and FHG procedure, respectively. The highest conversion efficiencies from NIR to green and green to DUV laser by usage of CLBO crystal are 70% and all-around fifty%, respectively [12], which corresponds towards the conversion efficiency of 35% from essential to DUV.
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