Detailed Notes on CLBO Crystal
Detailed Notes on CLBO Crystal
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Based on the proof-of-principle experiment, the conversion efficiency of 23% implied the possibility of achieving superior-ability at the next Stokes wavelength from the Raman laser. If the pump laser of 1078 nm can be received at the standard electricity of 50 W, the output electric power of its 2nd Stokes wavelength at 1512 nm could possibly be greater than ten W. The look in the Raman laser cavity should be optimized so as to steer clear of the hurt of your M1 and diamond surface area.
The normal energy of your NIR laser nevertheless has the potential to generally be improved to tens of watts such as 70 W [26] if the double-move configuration can be used to the Yb:YAG SCF amplifier stage. As a result, In the event the conversion performance of 31% from NIR to DUV could possibly be however taken care of at this better energy affliction, the average output electricity of your DUV laser at 258 nm might be in excess of twenty W, which might be considered a impressive electrical power stage for that DUV laser and produce the unanticipated DUV laser machining success. Furthermore, for high-ability DUV laser, the UV problems of the nonlinear crystal, such as the Home windows for CLBO crystal plus the mirrors, is an additional essential parameter for long-term and stable Procedure.
However, the beam good quality of the greater ability DUV laser would grow to be even worse due to far more critical thermal and nonlinear outcomes. Hence, the frequency conversion processes really should be carefully made to mitigate the aforementioned results. Hence, a significant-power DUV laser in the FHG of 1 μm with a great beam top quality could possibly be acquired and will be effective for getting the shorter wavelength DUV lasers which include 193 nm by SFG.
Both the 1040 nm and 1078 nm laser come from a single read more twin-wavelength Yb-doped fiber laser. Each laser is amplified by levels of fiber amplifier and Yb-doped resources amplifier, respectively.
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The heartbeat period of the next Stokes light-weight was shortened to 5 ns as revealed in Figure 7a, only one-shot image from the oscilloscope, that's a standard phenomenon in Raman laser [44] though the heartbeat length from the pump laser was 10 ns.
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Tunable ultraviolet laser source based on good-condition dye laser technology and CsLiB6O10 harmonic technology
The conversion effectiveness from essential NIR to DUV is from 5% to 36% based on the reported leads to Desk one. Growing the conversion effectiveness will lessen the stress on the design and setup of the basic laser amplifier and also the electric electrical power intake. A superb beam high-quality of the fundamental laser may also contribute for the expanding of your conversion performance as well as the right power depth with the NIR and environmentally friendly laser inside the SHG and FHG procedure, respectively. The highest conversion efficiencies from NIR to environmentally friendly and inexperienced to DUV laser by utilization of CLBO crystal are 70% and about fifty%, respectively [twelve], which corresponds for the conversion efficiency of 35% from elementary to DUV.
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