The best Side of CLBO Crystal
The best Side of CLBO Crystal
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The average electric power with the NIR laser however has the likely to get improved to tens of watts such as 70 W [26] If your double-pass configuration could possibly be utilized for that Yb:YAG SCF amplifier stage. Therefore, In the event the conversion effectiveness of 31% from NIR to DUV may very well be however managed at this better energy problem, the common output power in the DUV laser at 258 nm might be a lot more than 20 W, which would be considered a exceptional electric power degree with the DUV laser and bring on the unanticipated DUV laser machining final results. What's more, for prime-electric power DUV laser, the UV destruction in the nonlinear crystal, including the Home windows for CLBO crystal plus the mirrors, is an additional vital parameter for long run and secure Procedure.
Conversely, the beam top quality of the larger ability DUV laser would turn into even worse as a result of extra significant thermal and nonlinear outcomes. Hence, the frequency conversion processes really should be thoroughly made to mitigate the aforementioned outcomes. So, a large-power DUV laser with the FHG of one μm with a good beam high quality may be received and can be useful for acquiring the shorter wavelength DUV lasers for example 193 nm by SFG.
Equally the 1040 nm and 1078 nm laser come from 1 twin-wavelength Yb-doped fiber laser. Each individual laser is amplified by levels of fiber amplifier and Yb-doped elements amplifier, respectively.
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Within the scientific and industrial programs, the beam top quality on the DUV laser is also an essential parameter. Especially, the beam excellent with the DUV laser radically impacts the laser machining outcomes. The beam quality of your DUV laser is set by that of the fundamental laser as well as crystal to the frequency conversion. Lately, a superior-electricity DUV laser (>ten W) at 258 nm was noted that has a beam high quality of M2 < one.five, which was created by FHG of a Yb:YAG laser at 1030 nm using the CLBO crystal [thirteen]. This laser would produce a much better laser machining end result in comparison with the past DUV lasers with more substantial M2.
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Furthermore, combining the sound-condition laser with other nonlinear approach like stimulated Raman scattering, NIR lasers could possibly be attained at new wavelengths with significant ability and substantial beam good quality, which was tested through the evidence-of-basic principle experiment. This Raman laser plan offers a different path to the higher-power DUV laser, Specifically in the wavelength of 193 nm.
The beam profile demonstrated in Determine 7b demonstrated a superb beam excellent as among the merits of Raman laser, which would be beneficial to generate a 193-nm DUV laser with a top quality beam.
Its UV absorption edge reaches 180 nm. The effective nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about twice as substantial as that of KDP. check here CLBO crystals might be grown within the stoichiometric melt with lower viscosity.
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