Rumored Buzz on CLBO Crystal
Rumored Buzz on CLBO Crystal
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In accordance with the proof-of-principle experiment, the conversion effectiveness of 23% implied the potential for achieving large-electricity at the next Stokes wavelength with the Raman laser. Should the pump laser of 1078 nm could be obtained at the standard power of fifty W, the output energy of its 2nd Stokes wavelength at 1512 nm might be much more than ten W. The design of the Raman laser cavity ought to be optimized in an effort to stay away from the injury with the M1 and diamond surface area.
The normal electric power with the NIR laser however has the probable being improved to tens of watts like 70 W [26] When the double-go configuration can be utilized with the Yb:YAG SCF amplifier stage. As a result, In case the conversion efficiency of 31% from NIR to DUV may be still preserved at this higher electrical power ailment, the average output ability with the DUV laser at 258 nm might be in excess of 20 W, which would be described as a remarkable electricity amount for the DUV laser and bring about the unanticipated DUV laser machining effects. What's more, for top-power DUV laser, the UV damage of the nonlinear crystal, such as the Home windows for CLBO crystal along with the mirrors, is an additional crucial parameter for long lasting and stable Procedure.
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LBO is likewise a superb nonlinear crystal which is often placed on the SHG from your NIR into the green. The DUV laser is often realized by two stages of SFG inside the LBO crystals due to the fact there is no phase-matching angle for LBO to convert the green laser at 515 nm or 532 nm towards the DUV instantly by SHG [sixteen]. Recently, the NSBBF crystal has also revealed its opportunity to acquire a significant conversion performance from 532 nm to 266 nm. The stroll-off angle and deff with the NSBBF are Just about similar to those of CLBO [seventeen].
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Additionally, combining the solid-condition laser with other nonlinear course of action including stimulated Raman scattering, NIR lasers may very well be accomplished at new wavelengths with significant power and large beam good quality, which was analyzed via the evidence-of-principle experiment. This Raman laser plan gives a new route to the higher-ability DUV laser, Specifically for the wavelength of 193 nm.
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The conversion effectiveness from fundamental NIR to DUV is from five% to 36% according to the claimed leads to Desk 1. Expanding the conversion effectiveness will lessen the load on the look and setup of the basic laser amplifier along with the electrical power usage. A very good beam top quality of the elemental laser will also contribute for the growing of the conversion efficiency together with the right energy intensity on the NIR and inexperienced laser during the SHG and FHG procedure, respectively. The best conversion efficiencies from NIR to green and green to DUV laser by use of CLBO crystal are 70% and about 50%, respectively [twelve], which corresponds into the conversion performance of 35% from elementary to DUV.
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