The best Side of CLBO Crystal
The best Side of CLBO Crystal
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Even so, as a way to course of action the crystal is incredibly Sophisticated producing methods are necessary. For the reason that dawn of this crystal, focusing on this problem, we are now the one enterprise in the world which can be processed On this crystal.
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We summarized The existing development position of your large-energy DUV laser the two in the wavelength of FHG of the one-μm laser and at 193 nm. The recent progress from the stable-state/fiber laser, and also the nonlinear optical crystals, prompts not merely the typical electric power but also the beam good quality (coherence) of your DUV lasers to an unprecedented level.
The common electrical power from the NIR laser still has the likely for being enhanced to tens of watts for instance 70 W [26] In the event the double-go configuration may very well be utilized for your Yb:YAG SCF amplifier phase. Therefore, if the conversion performance of 31% from NIR to DUV could be continue to taken care of at this greater energy issue, the standard output ability on the DUV laser at 258 nm may be greater than 20 W, which might become a exceptional electrical power level for your DUV laser and result in the unanticipated DUV laser machining final results. Also, for top-energy DUV laser, the UV damage from the nonlinear crystal, including the Home windows for CLBO crystal plus the mirrors, is yet another important parameter for lasting and stable operation.
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Equally the 1040 nm and 1078 nm laser come from one twin-wavelength Yb-doped fiber laser. Every single laser is amplified by stages of fiber amplifier and Yb-doped materials amplifier, respectively.
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While in the scientific and industrial apps, the beam excellent of your DUV laser is also an important parameter. Particularly, the beam quality of the DUV laser considerably influences the laser machining benefits. The beam top quality of the DUV laser is set by that of the fundamental laser as well as crystal to the frequency conversion. Lately, a significant-energy DUV laser (>ten W) at 258 nm was noted that has a beam high quality of M2 < 1.five, which was created by FHG of a Yb:YAG laser at 1030 nm using the CLBO crystal [13]. This laser would bring on a greater laser machining outcome as compared to the prior DUV lasers with much larger M2.
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Furthermore, combining the good-state laser with other click here nonlinear system for example stimulated Raman scattering, NIR lasers could be reached at new wavelengths with superior electrical power and significant beam excellent, which was tested from the proof-of-theory experiment. This Raman laser scheme gives a whole new path to the substantial-power DUV laser, especially for the wavelength of 193 nm.
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The conversion effectiveness from fundamental NIR to DUV is from 5% to 36% in accordance with the reported ends in Desk one. Escalating the conversion effectiveness will lessen the burden on the design and set up of the fundamental laser amplifier plus the electric powered electrical power intake. A very good beam quality of the fundamental laser may even add into the growing in the conversion effectiveness and also the suitable electric power depth with the NIR and inexperienced laser during the SHG and FHG system, respectively. The best conversion efficiencies from NIR to eco-friendly and green to DUV laser by usage of CLBO crystal are 70% and all over 50%, respectively [twelve], which corresponds into the conversion effectiveness of 35% from fundamental to DUV.
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