CLBO Crystal Things To Know Before You Buy
CLBO Crystal Things To Know Before You Buy
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All-stable-condition ultraviolet lasers are actually broadly Utilized in the fields of mechanical flaw detection, lithography, micromachining and medicine for some great benefits of little quantity, extensive everyday living, superior performance, very good beam good quality, wide tuning and slender spectral line, etc. Using significant energy around-infrared coherent mild resource as the fundamental frequency resource depending on nonlinear tuning know-how, producing ultraviolet coherent radiation by multistage frequency conversion is viewed as a crucial solution to build the ultraviolet coherent light-weight source.
As compared to BBO it attributes much larger spectral and temperature acceptance, better angle tolerance, and a more compact stroll-off angle. from 3289 $ shipping
We summarized The existing advancement position of the large-power DUV laser both equally for the wavelength of FHG with the 1-μm laser and at 193 nm. The recent progress from the stable-state/fiber laser, together with the nonlinear optical crystals, prompts not just the normal energy but in addition the beam good quality (coherence) with the DUV lasers to an unparalleled amount.
The important thing difficulty of ultraviolet coherent mild supply largely concentrates on the development of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal has become the disorders for frequency transformation, so the growth, dimensions, problems resistance, conversion effectiveness and allowable parameter choice of nonlinear optical crystal are essential Progressively more.
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LBO is additionally a wonderful nonlinear crystal which is usually placed on the SHG within the NIR towards the environmentally friendly. The DUV laser is generally recognized by two phases of SFG while in the LBO crystals since there's no stage-matching angle for LBO to convert the eco-friendly laser at 515 nm or 532 nm for the DUV immediately by SHG [16]. Not too long ago, the NSBBF crystal has also proven its possible to obtain a high conversion performance from 532 nm to 266 nm. The stroll-off angle and deff with the NSBBF are Just about much like These of CLBO [seventeen].
On another aspect, the power scaling get more info from the NIR laser is yet another facet to improve the regular electrical power from the 193-nm DUV laser. Due to the deficiency of the large-ability amplification Resolution from the NIR laser (such as at 1553 nm), nonlinear frequency procedures for example optical parameter oscillation (OPO) could be applied to establish a wavelength converter by shifting the wavelength from 1 μm to the specified wavelength as well as obtaining relative better power [21]. Just lately, a diamond Raman laser confirmed its means in reaching a substantial electric power in addition to a significant conversion performance within the 1st Stokes in the 1-μm laser [22,23], which implies the possibility to become applied inside the 193-nm DUV laser generation as a result of its large Raman obtain and large frequency shift.
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In the scientific and industrial purposes, the beam high quality of the DUV laser is usually a crucial parameter. Specially, the beam high-quality with the DUV laser drastically affects the laser machining final results. The beam high-quality of your DUV laser is determined by that of the fundamental laser and also the crystal for your frequency conversion. Lately, a high-ability DUV laser (>10 W) at 258 nm was reported having a beam top quality of M2 < 1.five, which was created by FHG of the Yb:YAG laser at 1030 nm utilizing the CLBO crystal [13]. This laser would cause a far better laser machining result when compared with the past DUV lasers with larger sized M2.
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Moreover, combining the solid-state laser with other nonlinear process for instance stimulated Raman scattering, NIR lasers could be reached at new wavelengths with superior electrical power and superior beam high quality, which was tested with the evidence-of-theory experiment. This Raman laser plan delivers a new path to the high-power DUV laser, Specifically with the wavelength of 193 nm.
The beam profile proven in Determine 7b shown a very good beam excellent as among the merits of Raman laser, which would be advantageous to create a 193-nm DUV laser with a high quality beam.
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The development in the 193-nm laser was shown by phases of SFG. To be able to scale the DUV laser power properly, a new concept on the 193-nm DUV laser technology is introduced depending on the diamond Raman laser.