The Basic Principles Of CLBO Crystal
The Basic Principles Of CLBO Crystal
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The normal electrical power on the NIR laser continue to has the possible to get enhanced to tens of watts like 70 W [26] If your double-pass configuration could possibly be used for that Yb:YAG SCF amplifier stage. For this reason, Should the conversion efficiency of 31% from NIR to DUV could possibly be even now preserved at this bigger power situation, the typical output electrical power from the DUV laser at 258 nm can be more than twenty W, which might be described as a amazing electricity degree for your DUV laser and lead to the unanticipated DUV laser machining success. Also, for top-electricity DUV laser, the UV problems in the nonlinear crystal, including the Home windows for CLBO crystal as well as the mirrors, is yet another critical parameter for long-term and secure operation.
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LBO is also a great nonlinear crystal which is often applied to the SHG within the NIR for the inexperienced. The DUV laser is usually realized by two stages of SFG while in the LBO crystals given that there is no stage-matching angle for LBO to convert the eco-friendly laser at 515 nm or 532 nm to the DUV straight by SHG [16]. Lately, the NSBBF crystal has also shown its possible to obtain a higher conversion efficiency from 532 nm to 266 nm. The wander-off angle and deff with the NSBBF are Just about just like those of CLBO [17].
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Inside the scientific and industrial applications, the beam high quality from the DUV laser can also be an essential parameter. Especially, the beam quality in the DUV laser significantly affects the laser machining effects. The beam good quality from the DUV laser is decided by that of the basic laser and the crystal for the frequency conversion. A short while ago, a superior-electricity DUV laser (>ten W) at 258 nm was noted which 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 [13]. This laser would bring click here on a greater laser machining end result in comparison to the preceding DUV lasers with larger sized M2.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the most effective non-linear crystal which generates ultraviolet harmonics on the Nd:YAG fundamental laser wavelength. In order to greatly enhance the injury threshold, lower CLBO area roughness, by extremely-precision machining, is required. As the CLBO crystal has uncomplicated hydroscopic response and micro scratches in machining, extremely-specific machining of your CLBO crystal is really a difficult complex difficulty.
The beam profile revealed in Determine 7b shown a good beam top quality as among the list of deserves of Raman laser, which might be advantageous to create a 193-nm DUV laser with a high quality beam.
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The development of your 193-nm laser was demonstrated by stages of SFG. As a way to scale the DUV laser energy correctly, a fresh thought in the 193-nm DUV laser technology is introduced depending on the diamond Raman laser.