The 2-Minute Rule for KGW Crystal
The 2-Minute Rule for KGW Crystal
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Past do the job confirmed that the twin-crystal configuration can be employed to compensate for your thermal lensing impact[
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We applied a transmission grating (TG) like a dispersive ingredient in our stretcher and compressor. A compact configuration was adopted, where by the stretcher as well as compressor shared just one grating much like that in Ref.
Therefore There's little liberty for optimizing the dispersion compensation influence. Sub-two hundred fs pulses can be envisioned having a broader bandwidth seed enter. Because of the twin-crystal configuration, the laser cavity delivers a in close proximity to diffraction limited laser beam with M
Substitute with the Personal computer for a far better a single or maybe a wonderful adjustment from the Laptop orientation and also the utilized superior voltage is required to prevent this phenomenon. A fast pulse picker can be employed to Enhance the nanosecond-scale contrast with the output major pulse.
The measured Lower-off wavelengths with the small-wavelength facet are in line with the final development of blue-shifted spectral broadening on the bandgap of nonlinear content. Many of the nonlinear materials generated affordable purple-shifted spectral broadenings underneath ailments of optimal pump pulse energies, with the largest purple-change exceeding 2000 nm measured in GGG crystal. Our results exposed that GGG and BGO (which also had the bottom supercontinuum generation threshold) present strong, optical hurt-no cost efficiency at a laser repetition price of 200 kHz, suggesting that these elements are great possibilities to YAG and KGW for low threshold, significant regular power supercontinuum era while in the around- and small-wave infrared spectral ranges. We also shown that scintillating Attributes of bulk elements may very well be commonly studied while in the filamentation regime, through multiphoton excitation working with around-infrared femtosecond laser pulses.
The other was positioned with its Np -axis parallel Using the s-polarized course. A comparison was created amongst a configuration Along with the crystals positioned in precisely the same orientation (
KGW (potassium gadolinium tungstate) is actually a crystal that is commonly employed as being a Raman crystal in Raman spectroscopy. It's a colorless, clear crystal that has a higher Raman scattering efficiency and a powerful Raman spectrum, rendering it well suited for A variety of Raman programs.
We prepare to boost the pulse Power to previously mentioned forty mJ in two-phase multi-go amplifiers, equivalent to a attain variable of twenty. In each amplifier, we may also undertake two cascaded crystals put beneath orthogonal orientation to reduce the thermal load on Every single crystal and compensate for the acquire-narrowing result.
We produced a diode-pumped Yb:KGW regenerative amplifier as being the front stop of the kilohertz terawatt laser system. Wide bandwidth pulses were obtained by making use of dual crystals with unique orientations of their optical axes[
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）
The Yb:KGW laser program contains a quasi-3-stage habits. The online get of the Yb:KGW crystal was not superior: many tens of roundtrips ended up required to amplify the nanojoule seed to your millijoule stage. So, the acquire-narrowing effect was inevitable in Yb:KGW regenerative amplifiers.
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KGW crystals are employed as Raman scattering resources because they have potent Raman scattering at a amount of different click here wavelengths. Each time a laser beam is directed onto the crystal, the photons while in the laser beam connect with the crystal lattice, resulting in many of the photons to scatter in another route.