CLBO Crystal - An Overview
CLBO Crystal - An Overview
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The standard power from the NIR laser nonetheless has the potential for being enhanced to tens of watts for instance 70 W [26] In the event the double-pass configuration may very well be used for the Yb:YAG SCF amplifier phase. For this reason, Should the conversion effectiveness of 31% from NIR to DUV can be nevertheless taken care of at this bigger electricity ailment, the typical output power of the DUV laser at 258 nm may be a lot more than twenty W, which might be a exceptional electrical power amount for the DUV laser and result in the unanticipated DUV laser machining final results. Additionally, for prime-electrical power DUV laser, the UV problems of your nonlinear crystal, such as the windows for CLBO crystal along with the mirrors, is another vital parameter for long-lasting and secure operation.
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Each the 1040 nm and 1078 nm laser originate from a person twin-wavelength Yb-doped fiber laser. Each and every laser is amplified by stages of fiber amplifier and Yb-doped products amplifier, respectively.
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In the scientific and industrial purposes, the beam quality of your DUV laser is usually a very important parameter. Significantly, the beam quality in the DUV laser drastically affects the laser machining success. The beam good quality in the DUV laser is decided by that of the fundamental laser as well as crystal for the frequency conversion. Not long ago, a large-power DUV laser (>10 W) at 258 nm was claimed using a beam CLBO Crystal high-quality of M2 < 1.5, which was generated by FHG of the Yb:YAG laser at 1030 nm using the CLBO crystal [thirteen]. This laser would bring on a far better laser machining result compared to the prior DUV lasers with larger M2.
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Tunable ultraviolet laser supply based upon good-point out dye laser technology and CsLiB6O10 harmonic generation
The conversion performance from basic NIR to DUV is from five% to 36% based on the described results in Desk one. Rising the conversion efficiency will decrease the burden on the design and set up of the fundamental laser amplifier together with the electric electricity use. A great beam excellent of the elemental laser will even lead to your increasing in the conversion effectiveness together with the right ability depth of the NIR and green laser inside the SHG and FHG method, respectively. The very best conversion efficiencies from NIR to green and green to DUV laser by usage of CLBO crystal are 70% and all-around fifty%, respectively [twelve], which corresponds to your conversion effectiveness of 35% from basic to DUV.
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