CLBO Crystal Secrets
CLBO Crystal Secrets
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Based on the proof-of-theory experiment, the conversion performance of 23% implied the opportunity of achieving large-electrical power at the next Stokes wavelength on the Raman laser. When the pump laser of 1078 nm could possibly be acquired at the average electrical power of 50 W, the output electricity of its 2nd Stokes wavelength at 1512 nm may very well be more than ten W. The look of the Raman laser cavity needs to be optimized as a way to avoid the destruction with the M1 and diamond floor.
The normal electric power on the NIR laser even now has the prospective to generally be enhanced to tens of watts for example 70 W [26] In case the double-pass configuration could possibly be utilized for that Yb:YAG SCF amplifier stage. Hence, If your conversion performance of 31% from NIR to DUV could possibly be even now managed at this greater electric power situation, the normal output electrical power of your DUV laser at 258 nm could possibly be much more than 20 W, which would certainly be a exceptional electric power level for that DUV laser and bring on the unanticipated DUV laser machining results. Moreover, for high-power DUV laser, the UV damage from the nonlinear crystal, such as the Home windows for CLBO crystal plus the mirrors, is an additional critical parameter for long run and steady operation.
Conversely, the beam top quality of this increased ability DUV laser would turn into even worse on account of extra significant thermal and nonlinear outcomes. As a result, the frequency conversion processes ought to be meticulously meant to mitigate the aforementioned consequences. Hence, a high-electricity DUV laser within the FHG of one μm with a good beam top quality may be received and may be helpful for obtaining the shorter wavelength DUV lasers such as 193 nm by SFG.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the most effective non-linear crystal which generates ultraviolet harmonics from the Nd:YAG basic laser wavelength. As a way to boost the injury threshold, minimal CLBO surface roughness, by extremely-precision machining, is needed. Since the CLBO crystal has effortless hydroscopic reaction and micro scratches in machining, ultra-specific machining on the CLBO crystal is actually a difficult complex difficulty.
Tunable ultraviolet laser supply determined by reliable-condition dye laser technological innovation and CsLiB6O10 harmonic generation
The conversion effectiveness from fundamental NIR to DUV is from five% to 36% according to the described results in Desk one. Rising the conversion performance will reduce the load on the look and setup of the fundamental laser amplifier and also the electrical ability consumption. A fantastic beam quality of the fundamental laser can even add towards the rising of your conversion performance 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 to your conversion effectiveness of 35% from elementary to DUV.
The development with the 193-nm laser was shown by levels of SFG. As a way to scale the DUV laser ability efficiently, a completely new idea with the 193-nm DUV laser technology is presented depending on the diamond Raman laser.