Having said that, so as to approach the crystal is quite advanced production approaches are required. Because the dawn of the crystal, focusing on this challenge, we at the moment are the one organization on the planet which might be processed In this particular crystal.
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We summarized The present growth standing on the higher-energy DUV laser both of those with the wavelength of FHG in the one-μm laser and at 193 nm. The latest enhancement on the strong-condition/fiber laser, in addition to the nonlinear optical crystals, prompts not only the common ability but additionally the beam excellent (coherence) of your DUV lasers to an unprecedented stage.
The average ability of your NIR laser nonetheless has the likely for being enhanced to tens of watts which include 70 W [26] In case the double-pass configuration might be utilized for your Yb:YAG SCF amplifier phase. Consequently, if the conversion efficiency of 31% from NIR to DUV might be even now maintained at this higher electricity problem, the typical output electricity of the DUV laser at 258 nm can be over twenty W, which would become a exceptional electricity degree for your DUV laser and result in the unanticipated DUV laser machining results. Moreover, for high-power DUV laser, the UV damage of your nonlinear crystal, such as the windows for CLBO crystal as well as the mirrors, is an additional critical parameter for lasting and steady Procedure.
Conversely, the beam good quality of the larger ability DUV laser would grow to be worse resulting from a lot more major thermal and nonlinear results. For this reason, the frequency conversion processes really should be very carefully meant to mitigate the aforementioned effects. As a result, a superior-power DUV laser in the FHG of 1 μm with a good beam high quality could possibly be acquired and will be effective for obtaining the shorter wavelength DUV lasers such as 193 nm by SFG.
The two the 1040 nm and 1078 nm laser come from one 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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In the scientific and industrial purposes, the beam quality of your DUV laser is usually a very important parameter. Significantly, the beam high-quality with the DUV laser substantially impacts the laser machining results. The beam high-quality on the DUV laser is determined by that of the elemental laser as well as the crystal with the frequency conversion. Just lately, a higher-power DUV laser (>ten W) at 258 nm was documented that has a beam high-quality of M2 < 1.five, which was generated by FHG of a Yb:YAG laser at 1030 nm utilizing the CLBO crystal [13]. This laser would cause a greater laser machining consequence in comparison to the past DUV lasers with bigger 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. So that you can enrich the hurt threshold, very low CLBO surface roughness, by extremely-precision machining, is necessary. As the CLBO crystal has uncomplicated here hydroscopic reaction and micro scratches in machining, extremely-specific machining from the CLBO crystal is actually a hard technological difficulty.
Tunable ultraviolet laser supply based upon good-point out dye laser technological know-how and CsLiB6O10 harmonic technology
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The development of your 193-nm laser was demonstrated by phases of SFG. To be able to scale the DUV laser ability efficiently, a completely new notion of your 193-nm DUV laser generation is offered dependant on the diamond Raman laser.