The Basic Principles Of CLBO Crystal
The Basic Principles Of CLBO Crystal
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All-reliable-condition ultraviolet lasers are greatly Employed in the fields of mechanical flaw detection, lithography, micromachining and drugs for the benefits of smaller volume, prolonged everyday living, higher performance, superior beam quality, large tuning and slim spectral line, and so on. Employing significant electric power close to-infrared coherent light supply as the fundamental frequency supply according to nonlinear tuning technologies, building ultraviolet coherent radiation by multistage frequency conversion is considered an important technique to build the ultraviolet coherent light-weight source.
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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 case the double-move configuration might be used for your Yb:YAG SCF amplifier phase. Consequently, When the conversion effectiveness of 31% from NIR to DUV might be still preserved at this higher electricity problem, the standard output power from the DUV laser at 258 nm might be over 20 W, which might certainly be a outstanding electrical power stage for that DUV laser and lead to the unanticipated DUV laser machining final results. Additionally, for prime-electricity DUV laser, the UV problems with the nonlinear crystal, such as the windows for CLBO crystal as well as the mirrors, is an additional crucial parameter for long lasting and secure Procedure.
Then again, the beam high quality of the higher electricity DUV laser would turn out to be worse as a consequence of a lot more major thermal and nonlinear effects. Consequently, the frequency conversion processes really should be carefully created to mitigate the aforementioned results. Consequently, a superior-power DUV laser in the FHG of 1 μm with a great beam top quality could possibly be acquired and may be advantageous for obtaining the shorter wavelength DUV lasers like 193 nm by SFG.
Each the 1040 nm and 1078 nm laser come from a person twin-wavelength Yb-doped fiber laser. Every single laser is amplified by phases of fiber amplifier and Yb-doped supplies amplifier, respectively.
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Inside the scientific and industrial programs, the beam top quality in the DUV laser is additionally a crucial parameter. Especially, the beam top quality in the DUV laser radically influences the laser machining final results. The beam quality with the DUV laser is determined by that of the elemental laser as well as the crystal with the frequency conversion. Just lately, a higher-electrical power DUV laser (>ten W) at 258 nm was noted that has a beam high quality of M2 < 1.five, which was produced by FHG of the Yb:YAG laser at 1030 nm utilizing the CLBO crystal [thirteen]. This laser would bring about an even better laser machining result when compared with the former DUV lasers with bigger M2.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the best non-linear crystal which generates ultraviolet harmonics in the Nd:YAG fundamental laser wavelength. As a way to boost the harm threshold, low CLBO area roughness, by extremely-precision machining, is needed. As the CLBO crystal has uncomplicated hydroscopic reaction and micro scratches in machining, extremely-exact machining from the CLBO crystal is a complicated specialized issue.
Tunable ultraviolet laser source according to stable-condition dye laser know-how and CsLiB6O10 harmonic era
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The event from the 193-nm laser was demonstrated by phases of SFG. In order to scale the DUV laser electrical power proficiently, a brand new notion with the 193-nm DUV laser technology is introduced according to the diamond Raman laser.