CLBO Crystal Fundamentals Explained
CLBO Crystal Fundamentals Explained
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Even so, in order to approach the crystal may be very Superior production strategies are required. Since the dawn of this crystal, focusing on this obstacle, we at the moment are the only firm in the world that may be processed In this particular crystal.
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We summarized The existing enhancement position on the higher-electrical power DUV laser both for the wavelength of FHG in the one-μm laser and at 193 nm. The latest enhancement in the good-state/fiber laser, and also the nonlinear optical crystals, prompts not merely the average energy but will also the beam top quality (coherence) on the DUV lasers to an unparalleled level.
By way of example, The present concave OC could get replaced by a plane mirror which could mitigate the ability density around the floor of M1 along with the diamond. What's more, making use of higher damage threshold coatings for M1 and diamond would also Increase the output power with none damages. Then, the NIR laser within the 2nd Stokes wavelength could possibly be large adequate, in addition to its superior beam excellent, to generate the ultimate DUV laser at 193 nm that has a higher normal electric power.
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Due to the thermal lens effect while in the sound-condition lasers, Should the heating administration is insufficient, It's not easy to obtain the good-point out laser that has a large electricity and a superior beam good quality concurrently. Not too long ago, with the event of the thin disk laser and one-crystal fiber (SCF) laser, a significant-electricity laser at the elemental wavelength (one μm) had been realized with a fantastic beam excellent Despite a TEM00 manner beam [four,24], which might be great candidates for the fundamental from the DUV laser era. A further applicant for the basic could be the high-ability fiber laser which can be obtained by coherent beam blend with M2 worth below one.
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From the scientific and industrial programs, the beam good quality of your DUV laser is usually a vital parameter. Particularly, the beam good quality with the DUV laser dramatically influences the laser machining final results. The beam quality in the DUV laser is decided by that of the basic laser plus the crystal for that frequency conversion. Not long ago, a high-ability DUV laser (>10 W) at 258 nm was reported which has a beam good quality of M2 < one.five, which was created by FHG of a Yb:YAG laser at 1030 nm using the CLBO crystal [13]. This laser would produce a better laser machining outcome in comparison to the previous DUV lasers with larger M2.
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Additionally, combining the strong-condition laser with other nonlinear procedure for example stimulated Raman scattering, NIR lasers might be realized at new wavelengths with high ability and high beam excellent, which was tested by the proof-of-basic principle experiment. This Raman laser plan supplies a new path to the high-electricity DUV laser, Specially for the wavelength of 193 nm.
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Its UV absorption edge reaches 180 nm. The helpful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about two times as big as more info that of KDP. CLBO crystals can be developed in the stoichiometric soften with lessen viscosity.
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