The Basic Principles Of CLBO Crystal
The Basic Principles Of CLBO Crystal
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The true secret challenge of ultraviolet coherent light resource largely concentrates on the event of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is among the situations for frequency transformation, so the growth, dimension, harm resistance, conversion efficiency and allowable parameter selection of nonlinear optical crystal are needed Increasingly more.
Alternatively, the beam excellent of this increased power DUV laser would turn into even worse as a result of additional serious thermal and nonlinear results. For this reason, the frequency conversion procedures ought to be meticulously designed to mitigate the aforementioned effects. Hence, a substantial-electric power DUV laser within the FHG of one μm with a good beam quality might be acquired and will be advantageous for acquiring the shorter wavelength DUV lasers for example 193 nm by SFG.
Because of the thermal lens outcome in the good-state lasers, If your heating administration is inadequate, It's not necessarily effortless to obtain the good-condition laser which has a substantial energy in addition to a large beam quality concurrently. Just lately, with the event of the thin disk laser and solitary-crystal fiber (SCF) laser, a superior-electrical power laser at the basic wavelength (one μm) were realized with a superb beam excellent even with a TEM00 mode beam [four,24], which might be very good candidates for the elemental of your DUV laser generation. Yet another applicant for the basic could be the significant-ability fiber laser which could be achieved by coherent beam mix with M2 benefit fewer than 1.
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Inside the scientific and industrial programs, the beam high-quality of the DUV laser is also an essential parameter. Especially, the beam high quality with the DUV laser substantially influences the laser machining final results. The beam high quality of the DUV laser is set by that of the fundamental laser as well as crystal for that frequency conversion. Not too long ago, a high-electric power DUV laser (>10 W) at 258 nm was documented that has a beam top quality of M2 < one.five, which was generated by FHG of a Yb:YAG laser at 1030 nm utilizing the CLBO crystal [thirteen]. This laser would result in an even better laser machining result when compared to the prior DUV lasers with more substantial M2.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the simplest non-linear crystal which generates ultraviolet harmonics with the Nd:YAG elementary laser wavelength. In order to enhance the injury threshold, minimal CLBO surface roughness, by extremely-precision machining, is required. Because the CLBO crystal has simple hydroscopic response and micro scratches in machining, ultra-precise machining with the CLBO crystal is often a challenging technical challenge.
Tunable ultraviolet laser source determined by sound-condition dye laser know-how and CsLiB6O10 harmonic technology
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