Not known Factual Statements About CLBO Crystal
Not known Factual Statements About CLBO Crystal
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According to the proof-of-theory experiment, the conversion efficiency of 23% implied the possibility of achieving superior-electricity at the second Stokes wavelength of the Raman laser. Should the pump laser of 1078 nm may be obtained at the average ability of 50 W, the output ability of its 2nd Stokes wavelength at 1512 nm may very well be over ten W. The design from the Raman laser cavity really should be optimized as a way to steer clear of the problems in the M1 and diamond area.
For instance, The existing concave OC could get replaced by a aircraft mirror which could mitigate the power density over the floor of M1 as well as the diamond. Moreover, applying substantial damage threshold coatings for M1 and diamond would also Enhance the output ability with none damages. Then, the NIR laser within the 2nd Stokes wavelength might be large more than enough, in addition to its excellent beam top quality, to make the ultimate DUV laser at 193 nm by using a superior ordinary power.
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On the other facet, the ability scaling from the NIR laser is another component to improve the common energy of your 193-nm DUV laser. Mainly because of the insufficient the substantial-energy amplification Alternative on the NIR laser (for instance at 1553 nm), nonlinear frequency procedures like optical parameter oscillation (OPO) may very well be applied to make a wavelength converter by shifting the wavelength from one μm to the desired wavelength along with getting relative higher electrical power [21]. Not long ago, a diamond Raman laser showed its capability in obtaining a superior energy as well as a substantial conversion effectiveness for the 1st Stokes of your one-μm laser [22,23], which means the more info chance being utilized while in the 193-nm DUV laser generation as a consequence of its high Raman get and huge frequency shift.
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In addition, combining the stable-state laser with other nonlinear approach like stimulated Raman scattering, NIR lasers may be obtained at new wavelengths with higher electric power and superior beam high quality, which was tested with the proof-of-basic principle experiment. This Raman laser plan presents a whole new route to the large-electricity DUV laser, In particular for the wavelength of 193 nm.
The beam profile shown in Figure 7b shown a fantastic beam quality as one of many deserves of Raman laser, which might be effective to produce a 193-nm DUV laser with a high quality beam.
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The development of your 193-nm laser was demonstrated by phases of SFG. In order to scale the DUV laser ability efficiently, a completely new idea on the 193-nm DUV laser generation is presented based upon the diamond Raman laser.