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The standard ability of the NIR laser continue to has the likely for being improved to tens of watts for instance 70 W [26] In the event the double-go configuration may very well be utilized with the Yb:YAG SCF amplifier phase. That's why, In the event the conversion performance of 31% from NIR to DUV may very well be nevertheless preserved at this larger electric power condition, the common output electrical power from the DUV laser at 258 nm could be much more than 20 W, which might certainly be a impressive electric power level for that DUV laser and lead to the unanticipated DUV laser machining outcomes. Moreover, for high-electric power DUV laser, the UV harm on the nonlinear crystal, including the windows for CLBO crystal as well as the mirrors, is yet another critical parameter for long-lasting and secure Procedure.
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Due to thermal lens result in the good-condition lasers, When the heating administration is insufficient, It is far from effortless to obtain the stable-state laser having a high electric power as well as a high beam top quality simultaneously. Just lately, with the development of the thin disk laser and solitary-crystal fiber (SCF) laser, a superior-electricity laser at the elemental wavelength (one μm) were realized with an excellent beam good quality Despite having a TEM00 manner beam [4,24], which would be very good candidates for the basic with the DUV laser technology. One more applicant for the basic would be the significant-electricity fiber laser which could possibly be reached by coherent beam blend with M2 price a lot less than 1.
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The beam profile shown in Determine 7b demonstrated a great beam high-quality as on the list of merits of Raman laser, which might click here be advantageous to make a 193-nm DUV laser with a high quality beam.
Its UV absorption edge reaches one hundred eighty nm. The successful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about twice as significant as that of KDP. CLBO crystals might be grown within the stoichiometric melt with reduce viscosity.
The event from the 193-nm laser was demonstrated by levels of SFG. So as to scale the DUV laser energy correctly, a fresh thought from the 193-nm DUV laser era is introduced according to the diamond Raman laser.