CLBO Crystal Fundamentals Explained
CLBO Crystal Fundamentals Explained
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Based on the evidence-of-theory experiment, the conversion performance of 23% implied the opportunity of attaining substantial-ability at the second Stokes wavelength from the Raman laser. When the pump laser of 1078 nm may very well be attained at the standard power of fifty W, the output electric power of its 2nd Stokes wavelength at 1512 nm can be in excess of ten W. The design of the Raman laser cavity needs to be optimized to be able to avoid the harm with the M1 and diamond surface.
The main element challenge of ultraviolet coherent gentle supply mainly concentrates on the event of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is one of the conditions for frequency transformation, so The expansion, sizing, problems resistance, conversion effectiveness and allowable parameter array of nonlinear optical crystal are necessary An increasing number of.
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A result of the thermal lens impact while in the reliable-condition lasers, In the event the heating management is insufficient, it is not uncomplicated to get the strong-state laser which has a superior electric power plus a higher beam high quality concurrently. Not too long ago, with the development of The skinny disk laser and single-crystal fiber (SCF) laser, a significant-electrical power laser at the elemental wavelength (one μm) had been understood with a superb beam quality In spite of a TEM00 method beam [four,24], which would be very good candidates for the elemental from the DUV laser era. Another candidate for the basic is definitely the large-electric power fiber laser which may very well be attained by coherent beam mixture with M2 price below 1.
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During the scientific and industrial programs, the beam excellent from the DUV laser is usually a crucial parameter. Especially, the beam good quality of your DUV laser significantly impacts the laser machining benefits. The beam high-quality of the DUV laser is determined by that of the elemental laser plus the crystal for the frequency conversion. Not too long ago, a large-electricity DUV laser (>10 W) at 258 nm was noted using a beam top quality of M2 < 1.five, which was generated by FHG of the Yb:YAG laser at 1030 nm using the click here CLBO crystal [thirteen]. This laser would cause an improved laser machining outcome in comparison to the prior DUV lasers with larger sized M2.
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Moreover, combining the solid-condition laser with other nonlinear approach for instance stimulated Raman scattering, NIR lasers can be obtained at new wavelengths with superior ability and significant beam good quality, which was analyzed because of the proof-of-principle experiment. This Raman laser scheme provides a completely new route to the substantial-power DUV laser, In particular on the wavelength of 193 nm.
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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 two times as big as that of KDP. CLBO crystals may be grown with the stoichiometric soften with lessen viscosity.
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