Detailed Notes on CLBO Crystal
Detailed Notes on CLBO Crystal
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All-good-state ultraviolet lasers are actually widely used in the fields of mechanical flaw detection, lithography, micromachining and medication for some great benefits of smaller quantity, prolonged daily life, large efficiency, good beam high-quality, huge tuning and slender spectral line, etcetera. Making use of superior ability in the vicinity of-infrared coherent gentle supply as the fundamental frequency supply based upon nonlinear tuning technological innovation, making ultraviolet coherent radiation by multistage frequency conversion is considered an important strategy to develop the ultraviolet coherent mild supply.
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We summarized the current enhancement standing of the high-electric power DUV laser both with the wavelength of FHG of the 1-μm laser and at 193 nm. The recent growth of the strong-point out/fiber laser, plus the nonlinear optical crystals, prompts not only the common electricity but additionally the beam high-quality (coherence) in the DUV lasers to an unprecedented stage.
The standard ability of your NIR laser still has the possible to generally be improved to tens of watts like 70 W [26] Should the double-move configuration may be used to the Yb:YAG SCF amplifier phase. That's why, if the conversion effectiveness of 31% from NIR to DUV could possibly be nonetheless preserved at this larger ability situation, the normal output power in the DUV laser at 258 nm could possibly be much more than 20 W, which would be described as a outstanding electric power stage for that DUV laser and produce the unanticipated DUV laser machining outcomes. Additionally, for top-electric power DUV laser, the UV problems with the nonlinear crystal, such as the windows for CLBO crystal and also the mirrors, is another important parameter for long term and stable Procedure.
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LBO is likewise an excellent nonlinear crystal which is always applied to the SHG through the NIR to the inexperienced. The DUV laser is normally recognized by two levels of SFG within the LBO crystals considering that there is no phase-matching angle for LBO to convert the eco-friendly laser at 515 nm or 532 nm on the DUV specifically by SHG [sixteen]. Lately, the NSBBF crystal has also demonstrated its potential to acquire a click here superior conversion performance from 532 nm to 266 nm. The stroll-off angle and deff from the NSBBF are Nearly comparable to People of CLBO [17].
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the most effective non-linear crystal which generates ultraviolet harmonics with the Nd:YAG elementary laser wavelength. So that you can greatly enhance the damage threshold, low CLBO area roughness, by ultra-precision machining, is needed. As the CLBO crystal has uncomplicated hydroscopic reaction and micro scratches in machining, extremely-exact machining in the CLBO crystal is really a difficult complex difficulty.
Tunable ultraviolet laser resource determined by solid-point out dye laser technological innovation and CsLiB6O10 harmonic era
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