Earlier get the job done showed that the dual-crystal configuration can be used to compensate for the thermal lensing impact[
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We utilised a transmission grating (TG) being a dispersive part within our stretcher and compressor. A compact configuration was adopted, exactly where the stretcher as well as the compressor shared one grating comparable to that in Ref.
In its elemental type, potassium provides a silvery grey metallic appearance, but its compounds (including potassium hydroxide) tend to be more often Employed in industrial and chemical applications.
In contrast, the seed laser can be amplified to more than one mJ beneath the orthogonal orientation configuration.
The calculated Lower-off wavelengths within the limited-wavelength side are consistent with the general development of blue-shifted spectral broadening within the bandgap of nonlinear content. All of the nonlinear products developed reasonable crimson-shifted spectral broadenings under situations of exceptional pump pulse energies, with the largest crimson-shift exceeding 2000 nm calculated in GGG crystal. Our benefits uncovered that GGG and BGO (which also had the bottom supercontinuum era threshold) give tough, optical problems-totally free general performance at a laser repetition level of 200 kHz, suggesting that these elements are fantastic choices to YAG and KGW for very low threshold, large ordinary power supercontinuum era within the close to- and small-wave infrared spectral ranges. We also demonstrated that scintillating Homes of bulk products could be conveniently studied inside the filamentation regime, by means of multiphoton excitation applying around-infrared femtosecond laser pulses.
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KGW (potassium gadolinium tungstate) is a crystal that is commonly employed being a Raman crystal in Raman spectroscopy. It is just a colorless, clear crystal which has a superior Raman scattering performance and a strong Raman spectrum, making it appropriate for A selection of Raman programs.
The spectral measurements of filament-induced luminescence recommend that scintillating properties of materials could be conveniently researched utilizing femtosecond in the vicinity of-infrared gentle source via multiphoton excitation from the filamentation regime, which will allow effortless separation of excitation and emission wavelengths and reduced risk of optical hurt.
Determine four Beam radius variation on the two crystals though modifying the focal size from the thermal lensing outcome.
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）
Since its discovery in 19701,two, the state from the art of supercontinuum (SC) technology in bulk solid-state components has arrived at a substantial amount of maturity because of remarkable progress of ultrafast laser resources and fundamental comprehension of the fundamental physical processes3,4. The complexity of Bodily consequences underlying SC generation is unveiled during the framework of femtosecond filamentation, that's a common phenomenon arising from nonlinear propagation of femtosecond laser pulses in clear read more materials5. In additional simple phrases, the attainable spectral extent of SC radiation depends upon the fabric Attributes, for example linear and nonlinear indexes of refraction and Vitality bandgap, which along with the laser wavelength determine the vital electricity for self-concentrating (that has to get exceeded for a lightweight filament to kind) and clamping intensity of a light-weight filament (which is proportional into the get of multiphoton absorption), respectively.
Influence of potassium supplementation on vascular operate: A meta-analysis of randomized managed trials.
KGW crystals are utilized as Raman scattering resources simply because they have strong Raman scattering at a quantity of different wavelengths. Each time a laser beam is directed on to the crystal, the photons within the laser beam communicate with the crystal lattice, causing many of the photons to scatter in a special course.