The Definitive Guide to CLBO Crystal
The Definitive Guide to CLBO Crystal
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The typical ability with the NIR laser still has the likely being improved to tens of watts for instance 70 W [26] In the event the double-pass configuration could possibly be used for that Yb:YAG SCF amplifier stage. For this reason, In case the conversion effectiveness of 31% from NIR to DUV might be continue to taken care of at this bigger electrical power ailment, the typical output electricity of your DUV laser at 258 nm could possibly be in excess of twenty W, which might certainly be a impressive electric power amount for the DUV laser and result in the unanticipated DUV laser machining benefits. Additionally, for prime-electric power DUV laser, the UV problems with the nonlinear crystal, such as the windows for CLBO crystal plus the mirrors, is yet another significant parameter for lasting and steady operation.
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Both the 1040 nm and 1078 nm laser originate from a person twin-wavelength Yb-doped fiber laser. Just about every laser is amplified by stages of fiber amplifier and Yb-doped products amplifier, respectively.
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From the scientific and industrial programs, the beam good quality from the DUV laser is additionally a crucial parameter. Specifically, the beam top quality in the DUV laser significantly affects the laser machining success. The beam good quality in the DUV laser is decided by that of the basic laser and also the crystal with the frequency conversion. Just lately, a higher-ability DUV laser (>10 W) at 258 nm was described by using a beam quality of M2 < 1.five, which was created by FHG of a Yb:YAG laser at 1030 nm using the CLBO crystal [thirteen]. This laser would read more lead to an improved laser machining final result when compared to the previous DUV lasers with greater 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 elementary laser wavelength. So as to greatly enhance the problems threshold, lower CLBO surface area roughness, by ultra-precision machining, is required. Because the CLBO crystal has easy hydroscopic response and micro scratches in machining, ultra-exact machining from the CLBO crystal is usually a hard technical challenge.
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Its UV absorption edge reaches one hundred eighty nm. The efficient nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about 2 times as massive as that of KDP. CLBO crystals may be developed from the stoichiometric soften with decrease viscosity.
The event from the 193-nm laser was shown by levels of SFG. To be able to scale the DUV laser electric power successfully, a different notion with the 193-nm DUV laser technology is presented depending on the diamond Raman laser.