A Secret Weapon For CLBO Crystal

All-strong-state ultraviolet lasers have been widely Employed in the fields of mechanical flaw detection, lithography, micromachining and drugs for some great benefits of tiny volume, long daily life, substantial performance, fantastic beam high-quality, extensive tuning and slender spectral line, etcetera. Using higher electric power in the vicinity of-infrared coherent light source as the basic frequency resource dependant on nonlinear tuning know-how, producing ultraviolet coherent radiation by multistage frequency conversion is considered to be a vital method to establish the ultraviolet coherent light-weight source.

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As an example, the current concave OC could get replaced by a plane mirror which could mitigate the power density on the surface of M1 and also the diamond. Furthermore, making use of large injury threshold coatings for M1 and diamond would also improve the output power with none damages. Then, the NIR laser within the 2nd Stokes wavelength can be higher adequate, and also its excellent beam quality, to create the final DUV laser at 193 nm using a significant typical power.

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On the other facet, the facility scaling in the NIR laser is another aspect to raise the ordinary power of your 193-nm DUV laser. Because of the insufficient the superior-electric power amplification Remedy from the NIR laser (such as at 1553 nm), nonlinear frequency processes which include optical parameter oscillation (OPO) may very well be applied to make a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength in addition to obtaining relative larger energy [21]. Not too long ago, a diamond Raman laser showed its means in obtaining a substantial electrical power and a superior conversion effectiveness within the 1st Stokes from the 1-μm laser [22,23], which implies the likelihood to be utilized during the 193-nm DUV laser technology on account of its superior Raman obtain and enormous frequency change.

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While in the scientific and industrial programs, the beam quality with the DUV laser can be a crucial parameter. Particularly, the beam high-quality in the DUV laser radically affects the laser machining final results. The beam excellent of the DUV laser is set by that of the elemental laser and the crystal for your frequency conversion. Recently, a higher-electricity DUV laser (>ten W) at 258 nm was reported that has a beam top quality of M2 < 1.five, which was created by FHG of a Yb:YAG laser at 1030 nm using the CLBO crystal [13]. This laser would cause a much better laser machining consequence compared to the former DUV lasers with larger sized M2.

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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the simplest non-linear crystal which generates ultraviolet harmonics from the Nd:YAG essential laser wavelength. So as to greatly enhance the destruction threshold, minimal CLBO surface area roughness, by extremely-precision machining, is needed. Since the CLBO crystal has quick hydroscopic response and micro scratches in machining, ultra-specific machining of your CLBO crystal is really a tricky technical dilemma.

Tunable ultraviolet laser supply based on good-condition dye laser technological innovation and CsLiB6O10 harmonic technology

Its UV absorption edge reaches a hundred and eighty nm. The helpful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about 2 times as huge as that more info of KDP. CLBO crystals might be grown from the stoichiometric melt with decrease viscosity.

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