KGW Crystal Can Be Fun For Anyone
KGW Crystal Can Be Fun For Anyone
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Past function confirmed that the dual-crystal configuration can be utilized to compensate to the thermal lensing outcome[
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The gain bandwidth e.g. of Yb:KGW and Yb:KYW is extremely large when compared with that of Yb:YAG. This permits for broad wavelength tunability and for Substantially shorter pulse durations from method-locked lasers. Values well under one hundred fs have been reached with passive method locking.
In summary, we demonstrated that undoped scintillator crystals: BGO, GGG, YSO, LSO and LYSO are productive nonlinear products for broadband SC technology during the in the vicinity of-infrared and shorter-wave infrared spectral ranges, when pumped by a hundred and eighty fs elementary harmonic pulses from an amplified Yb:KGW laser. YSO, LSO and LYSO generated two octave-spanning SC spectra, which Review to SC spectra developed in YAG. These supplies show really comparable performances to YAG also with regards to threshold and optimum pump pulse energies for SC technology. Even so, for what concerns the likelihood to operate at substantial laser pulse repetition charge, YSO, LSO and LYSO show resilient Procedure only at 10 kHz and speedily degrade (within a couple of minutes) at 20 kHz. Moreover the fairly very low SC generation threshold (169 nJ), GGG demonstrated wonderful overall performance characteristics inside the quick-wave infrared with the exceptional pump pulse Electricity of 464 nJ, which is two instances decrease than in YAG: the biggest crimson-shifted spectral broadening and the very best spectral Vitality density, outperforming KGW and YAG crystals in that part.
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For tungstates, the ytterbium doping focus can be extremely large without the need of considerable quenching as the changed ions have an exceedingly comparable ion radius, plus the inter-ion length is pretty substantial.
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Case Research of picked essential systems invented or co-invented by American Features in just the 1st two decades of the century
Talk to RP Photonics for any guidance regarding tungstate lasers, which includes femtosecond lasers and substantial-ability lasers.
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相关工作得到了上海扬帆计划、国家重点研发计划、中国科学院战略性先导科技专项、国家自然科学基金项目、上海市优秀学术/技术带头人计划、上海市市级科技重大专项、中国科学院青年创新促进会的支持。（强场激光物理国家重点实验室供稿）
-switched laser output beneath the two crystal placement configurations. The black line denotes the configuration While using the crystals put in the exact same orientation, whilst the pink line is beneath the configuration of crystals put in orthogonal orientation.
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An illustration of this kind of behaviour is proven in Fig. 7a. The character check here of spectral alterations is highlighted in Fig. 7d, which demonstrates how the SC spectrum over the long-wavelength aspect shrinks substantially, from 1800 nm to 1450 nm, just immediately after eight minutes of exposure time within a stationary sample. LT crystal demonstrated somewhat better extensive-expression effectiveness: at pulse repetition costs of as many as one hundred kHz no narrowing on either aspect in the SC spectrum was detected. Having said that, swift narrowing in the SC spectrum in LT crystal was noticed immediately after the initial five minutes of operation when the heart beat repetition charge was established at 200 kHz (facts not shown). In distinction to the above elements, BGO and GGG demonstrated outstanding SC generation performances with no spectral adjustments at a pulse repetition amount of 200 kHz, as attested by the time number of SC spectra in BGO and GGG, revealed in Fig. 7b and c, respectively. Determine 7e and f outline similar designs of SC spectra in the beginning and at the conclusion of one hour-Long lasting measurement in both of those supplies.