The best Side of KGW Crystal
The best Side of KGW Crystal
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We utilised a transmission grating (TG) like a dispersive ingredient within our stretcher and compressor. A compact configuration was adopted, where the stretcher and the compressor shared 1 grating just like that in Ref.
The crimson-shifted part of the SC is of practical relevance, especially for what fears the general performance of broadly tunable optical parametric amplifiers pumped by the fundamental harmonics of Yb lasers. The dearth of seed photons from the extensive-wavelength location with the SC spectrum limits the amplification effectiveness and leads to pulse-to-pulse Vitality fluctuations across the degeneracy area with the optical parametric amplifier. This facet is quantified in Fig. 6a by plotting the SC spectra in terms of spectral energy density, which was approximated by measuring the Power on the axial Portion of SC radiation (that is the only real practically valuable Element of SC emission). KGW crystal creates the best spectral Power density from the 1200�?450 nm assortment, as mentioned in a very modern study30.
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Even so, after Nd3+:YAG grew to become commercially available, the desire in CaWO4 dropped sharply. In later on many years, sure other tungstate crystals started to bring in a lot of consideration.
In its elemental type, gadolinium has a silvery-white look. Gadolinium is usually a unusual earth or lanthanide element that possesses exclusive Homes advantageous to specialised programs such as semiconductor fabrication and nuclear reactor shielding. It really is utilized for both equally its high magnetic minute (7.ninety fourμ B) As well as in phosphors and scintillator crystals. When complexed with EDTA ligands, it is utilized being an injectable contrast agent for MRIs. The factor is named once the Finnish chemist and geologist Johan Gadolin.
The actual spectra ended up reconstructed by correcting the calculated spectra with an account for your filter transmission features and for that sensitivity features of your spectrometers at the info submit-processing phase. The spectral dynamics in Just about every sample was calculated by good tuning the pump pulse Strength with a computer-managed attenuator that was built-in in KGW Crystal the laser procedure. Thermal Strength meter EM (Ophir 3A-PF-12) was utilized to measure the SC Electrical power which was thereafter accustomed to calculate the spectral energy density with the SC radiation. All the measurements had been executed with no translation with the sample with regard towards the pump beam.
The 2-pump laser could offer approximately a hundred and twenty W ability. Around 60% of the most pump electric power was applied inside our experiment considering the very low overall performance with the dichroic mirrors. Below this twin-crystal configuration, our cavity supports a one hundred W pump power enter, as discussed in Part 2.2. Higher-high-quality dichroic mirrors will be utilised Later on, and laser pulses might be stretched to a longer pulse duration.
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）
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Both energies are marked via the dashed strains and their values are labeled inside the plots. The equivalent capabilities have been also noticed in KGW and YAG crystals, whose spectral broadening dynamics are shown to get a comparison in Fig. four.