The 2-Minute Rule for CLBO Crystal
The 2-Minute Rule for CLBO Crystal
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On the other hand, to be able to course of action the crystal is incredibly Highly developed manufacturing tactics are demanded. Since the dawn of this crystal, working on this challenge, we are actually the one corporation in the world that could be processed During this crystal.
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We summarized the current growth position of the higher-ability DUV laser the two for the wavelength of FHG of the 1-μm laser and at 193 nm. The latest progress with the solid-state/fiber laser, in addition to the nonlinear optical crystals, prompts not merely the typical power but in addition the beam high-quality (coherence) on the DUV lasers to an unparalleled level.
The common energy with the NIR laser nonetheless has the probable to get enhanced to tens of watts for example 70 W [26] if the double-pass configuration may be used for the Yb:YAG SCF amplifier stage. Consequently, If your conversion performance of 31% from NIR to DUV could be nonetheless maintained at this increased power situation, the typical output electrical power on the DUV laser at 258 nm may be in excess of twenty W, which would be considered a outstanding electrical power amount for the DUV laser and result in the unanticipated DUV laser machining outcomes. Moreover, for top-electricity DUV laser, the UV injury from the nonlinear crystal, such as the windows for CLBO crystal and the mirrors, is an additional significant parameter for long-term and secure operation.
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Equally the 1040 nm and 1078 nm laser come from a single twin-wavelength Yb-doped fiber laser. Each individual laser is amplified by phases of fiber amplifier and Yb-doped components amplifier, respectively.
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From the scientific and industrial apps, the beam excellent with the DUV laser is likewise a significant parameter. Specially, the beam good quality from the DUV laser drastically influences the laser machining final results. The beam high quality of your DUV laser is set by that of the fundamental laser plus the crystal to the frequency conversion. Recently, a significant-energy DUV laser (>ten W) at 258 nm was reported by using a beam quality of M2 < 1.five, which was created by FHG of the Yb:YAG laser at 1030 nm using the CLBO crystal [thirteen]. This laser would bring about a far better laser machining outcome as compared to the previous DUV lasers with more substantial M2.
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In addition, combining the good-state laser with other nonlinear course of action like stimulated Raman scattering, NIR lasers may very well be achieved at new wavelengths with large electrical power and substantial beam good quality, which was tested because of the proof-of-basic principle experiment. This Raman laser plan presents a brand new route to the substantial-power DUV laser, especially in the wavelength of 193 nm.
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The conversion efficiency from essential NIR to DUV is from 5% to 36% in accordance with the documented brings about Table one. Rising the conversion efficiency will decrease the stress on the design and setup of the elemental laser amplifier in addition to the electric powered electrical power intake. A good beam top quality of the basic laser will likely contribute on the rising of the conversion efficiency and also the suitable ability depth of the NIR and green laser within the SHG and FHG method, respectively. The very best conversion efficiencies from NIR to eco-friendly and eco-friendly to DUV laser by use of CLBO crystal are 70% and close to 50%, respectively [12], which corresponds to the conversion performance of 35% from essential to DUV.
The development on the 193-nm laser was shown by phases of SFG. So that you can scale the DUV laser electrical power correctly, a fresh thought from the 193-nm DUV laser era is introduced according to the diamond Raman laser.