The Greatest Guide To CLBO Crystal
The Greatest Guide To CLBO Crystal
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All-good-point out ultraviolet lasers are actually broadly Utilized in the fields of mechanical flaw detection, lithography, micromachining and medication for the benefits of smaller volume, very long everyday living, large effectiveness, superior beam quality, huge tuning and narrow spectral line, and so forth. Employing high electricity around-infrared coherent light-weight supply as the basic frequency resource according to nonlinear tuning technological know-how, producing ultraviolet coherent radiation by multistage frequency conversion is considered to be a very important strategy to build the ultraviolet coherent light source.
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We summarized The existing development position on the large-energy DUV laser each within the wavelength of FHG on the 1-μm laser and at 193 nm. The recent progress in the strong-point out/fiber laser, plus the nonlinear optical crystals, prompts not just the normal ability but will also the beam excellent (coherence) in the DUV lasers to an unprecedented stage.
The important thing difficulty of ultraviolet coherent light-weight source generally concentrates on the development of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is one of the problems for frequency transformation, so The expansion, measurement, harm resistance, conversion performance and allowable parameter number of nonlinear optical crystal are demanded more and more.
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On one other aspect, the ability scaling of the NIR laser is an additional aspect to boost the get more info common power from the 193-nm DUV laser. Due to not enough the substantial-electric power amplification Option from the NIR laser (by way of example at 1553 nm), nonlinear frequency processes such as optical parameter oscillation (OPO) might be placed on make a wavelength converter by shifting the wavelength from one μm to the desired wavelength and acquiring relative higher electric power [21]. Lately, a diamond Raman laser showed its capacity in obtaining a higher energy in addition to a high conversion effectiveness at the 1st Stokes of your one-μm laser [22,23], which implies the possibility to get applied within the 193-nm DUV laser generation as a consequence of its superior Raman obtain and large frequency change.
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The heartbeat duration of the second Stokes light-weight was shortened to five ns as revealed in Determine 7a, an individual-shot picture from the oscilloscope, and that is a common phenomenon in Raman laser [44] though the pulse length with the pump laser was ten ns.
Cesium Lithium Borate (CsLiB6O10 or CLBO) is the simplest non-linear crystal which generates ultraviolet harmonics of the Nd:YAG basic laser wavelength. As a way to enhance the injury threshold, lower CLBO floor roughness, by ultra-precision machining, is required. As the CLBO crystal has uncomplicated hydroscopic reaction and micro scratches in machining, ultra-exact machining with the CLBO crystal is usually a hard technical trouble.
The beam profile shown in Determine 7b demonstrated a good beam high-quality as one of several merits of Raman laser, which would be effective to crank out a 193-nm DUV laser with a high quality beam.
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The event from the 193-nm laser was shown by phases of SFG. To be able to scale the DUV laser ability proficiently, a fresh concept with the 193-nm DUV laser era is introduced determined by the diamond Raman laser.