Rumored Buzz on CLBO Crystal
Rumored Buzz on CLBO Crystal
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Nonetheless, in an effort to approach the crystal is incredibly Superior producing tactics are necessary. Considering that the dawn of this crystal, engaged on this challenge, we at the moment are the one corporation on earth which might be processed On this crystal.
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In accordance with the proof-of-basic principle experiment, the conversion effectiveness of 23% implied the opportunity of attaining significant-power at the second Stokes wavelength in the Raman laser. If your pump laser of 1078 nm can be attained at the standard power of fifty W, the output power of its 2nd Stokes wavelength at 1512 nm could possibly be in excess of ten W. The look on the Raman laser cavity must be optimized in an effort to avoid the damage of your M1 and diamond floor.
The normal ability of your NIR laser however has the probable to get improved to tens of watts which include 70 W [26] If your double-pass configuration could be used with the Yb:YAG SCF amplifier stage. Hence, If your conversion efficiency of 31% from NIR to DUV may very well be nonetheless preserved at this greater electric power situation, the normal output energy with the DUV laser at 258 nm may very well be over twenty W, which might be considered a amazing electric power amount with the DUV laser and bring on the unanticipated DUV laser machining effects. Moreover, for top-electric power DUV laser, the UV problems with the nonlinear crystal, such as the windows for CLBO crystal as well as the mirrors, is an additional crucial parameter for lasting and steady Procedure.
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Mainly because of the thermal lens result within the stable-state lasers, Should the heating management is inadequate, It isn't uncomplicated to obtain the sound-condition laser with a large ability along with a substantial beam quality at the same time. Recently, with the development of the thin disk laser and single-crystal fiber (SCF) laser, a higher-ability laser at the elemental wavelength (one μm) were recognized with a superb beam excellent In spite of a TEM00 method beam [4,24], which would be great candidates for the fundamental from the DUV laser generation. Another prospect for the elemental could be the substantial-electricity fiber laser which could possibly be achieved by coherent beam mix with M2 worth less than one.
On another side, the power scaling with the NIR laser is another component to raise the average electrical power of your 193-nm DUV laser. A result of the not enough the large-ability amplification Answer with the NIR laser (for example at 1553 nm), nonlinear frequency processes including optical parameter oscillation (OPO) may very well be applied to produce a wavelength converter by shifting the wavelength from one μm to the desired wavelength and getting relative CLBO Crystal larger electrical power [21]. Recently, a diamond Raman laser confirmed its means in reaching a high ability and also a substantial conversion efficiency with the 1st Stokes on the one-μm laser [22,23], which means the chance to get used from the 193-nm DUV laser technology as a consequence of its significant Raman obtain and large frequency change.
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The heart beat duration of the next Stokes light-weight was shortened to 5 ns as demonstrated in Figure 7a, an individual-shot photograph through the oscilloscope, which is a typical phenomenon in Raman laser [44] when the pulse duration on the pump laser was ten ns.
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The conversion efficiency from essential NIR to DUV is from 5% to 36% in accordance with the documented results in Table one. Escalating the conversion performance will decrease the stress on the design and setup of the elemental laser amplifier in addition to the electric powered electrical power use. An excellent beam quality of the basic laser can even add for the increasing in the conversion effectiveness and the appropriate electrical power intensity on the NIR and inexperienced laser during the SHG and FHG process, respectively. The highest conversion efficiencies from NIR to green and green to DUV laser by use of CLBO crystal are 70% and around fifty%, respectively [twelve], which corresponds on the conversion effectiveness of 35% from basic to DUV.
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