5 Essential Elements For CLBO Crystal
5 Essential Elements For CLBO Crystal
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All-sound-condition ultraviolet lasers have been extensively Utilized in the fields of mechanical flaw detection, lithography, micromachining and medication for the advantages of little quantity, long lifestyle, higher performance, fantastic beam excellent, extensive tuning and narrow spectral line, etc. Employing superior power near-infrared coherent light supply as the elemental frequency supply depending on nonlinear tuning technology, creating ultraviolet coherent radiation by multistage frequency conversion is viewed as a crucial way to develop the ultraviolet coherent gentle resource.
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Based on the evidence-of-basic principle experiment, the conversion efficiency of 23% implied the potential for acquiring large-electrical power at the next Stokes wavelength of your Raman laser. When the pump laser of 1078 nm may be acquired at the standard power of fifty W, the output energy of its 2nd Stokes wavelength at 1512 nm could possibly be over 10 W. The design of your Raman laser cavity need to be optimized so as to stay away from the hurt in the M1 and diamond surface.
As an example, the current concave OC could get replaced by a aircraft mirror which could mitigate the power density within the surface area of M1 and the diamond. What's more, employing large damage threshold coatings for M1 and diamond would also Enhance the output electricity without any damages. Then, the NIR laser for the 2nd Stokes wavelength could possibly be higher adequate, in addition to its superior beam good quality, to generate the ultimate DUV laser at 193 nm by using a higher regular electrical power.
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Because of the thermal lens result from the good-point out lasers, If your heating administration is insufficient, It's not at all quick to get the strong-point out laser that has a substantial electrical power and a significant beam top quality at the same time. Lately, with the event of The skinny disk laser and one-crystal fiber (SCF) laser, a higher-electric power laser at the elemental wavelength (1 μm) had been recognized with a fantastic beam quality Despite a TEM00 mode beam [4,24], which would be very good candidates for the basic in the DUV laser era. Yet another applicant for the elemental is definitely the higher-electrical power fiber laser which may very well be obtained by coherent beam mix with M2 benefit fewer than one.
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The heartbeat duration of the 2nd Stokes mild was shortened to five ns as proven in Determine 7a, an individual-shot photograph within the oscilloscope, which happens to be a typical phenomenon in Raman laser [forty four] even though the pulse length from the pump laser was ten ns.
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The beam profile revealed in Figure 7b demonstrated a good beam top quality as among the list of deserves of Raman laser, which would be beneficial to produce a 193-nm DUV laser with a high quality beam.
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The event from the 193-nm laser was shown by stages of SFG. So that you can scale the DUV laser electricity effectively, a whole new idea with the 193-nm DUV laser generation is offered depending on the diamond Raman laser.