Examine This Report on CLBO Crystal
Examine This Report on CLBO Crystal
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Nonetheless, as a way to course of action the crystal is incredibly Sophisticated producing tactics are necessary. For the reason that dawn of the crystal, focusing on this obstacle, we are now the one company on the globe that can be processed During this crystal.
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The true secret difficulty of ultraviolet coherent gentle resource mainly concentrates on the event of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is among the situations for frequency transformation, so the growth, dimension, harm resistance, conversion efficiency and allowable parameter range of nonlinear optical crystal are required Increasingly more.
Then again, the beam quality of this bigger electrical power DUV laser would come to be worse resulting from additional serious thermal and nonlinear results. Therefore, the frequency conversion processes really should be carefully made to mitigate the aforementioned results. As a result, a significant-power DUV laser at the FHG of 1 μm with a good beam high-quality could be attained and may be advantageous for getting the shorter wavelength DUV lasers such as 193 nm by SFG.
A result of the thermal lens impact within the sound-state lasers, When the heating administration is inadequate, It's not straightforward to acquire the reliable-state laser that has a higher ability in addition to a large beam high-quality simultaneously. Not long ago, with the development of The skinny disk laser and single-crystal fiber (SCF) laser, a check here significant-power laser at the basic wavelength (one μm) were understood with a great beam good quality In spite of a TEM00 manner beam [four,24], which might be superior candidates for the fundamental of your DUV laser generation. A different prospect for the elemental is definitely the high-energy fiber laser which could possibly be attained by coherent beam mixture with M2 value less than one.
On the opposite aspect, the power scaling on the NIR laser is an additional factor to boost the typical power of your 193-nm DUV laser. Due to insufficient the high-electric power amplification Resolution from the NIR laser (such as at 1553 nm), nonlinear frequency processes which include optical parameter oscillation (OPO) may be applied to produce a wavelength converter by shifting the wavelength from one μm to the desired wavelength together with obtaining relative larger power [21]. Just lately, a diamond Raman laser confirmed its ability in attaining a significant power as well as a substantial conversion effectiveness on the 1st Stokes with the 1-μm laser [22,23], which implies the likelihood to get utilized from the 193-nm DUV laser technology because of its high Raman gain and enormous frequency change.
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The pulse period of the second Stokes light-weight was shortened to 5 ns as demonstrated in Determine 7a, one-shot picture within the oscilloscope, that's a standard phenomenon in Raman laser [44] though the pulse length of the pump laser was ten ns.
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The beam profile shown in Figure 7b demonstrated an excellent beam excellent as among the merits of Raman laser, which would be useful to crank out a 193-nm DUV laser with a top quality beam.
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The event of the 193-nm laser was demonstrated by levels of SFG. To be able to scale the DUV laser electric power successfully, a completely new idea with the 193-nm DUV laser technology is presented determined by the diamond Raman laser.