The smart Trick of KGW Crystal That No One is Discussing
The smart Trick of KGW Crystal That No One is Discussing
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Preceding get the job done showed that the twin-crystal configuration may be used to compensate to the thermal lensing impact[
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Determine 7 demonstrates the calculated dispersion compensation end result. The compressed pulse duration is around 185 fs in the event the period of input pulses is one hundred fifty fs. The discrepancy between them is going to be significantly diminished with an extended pulse enter since uncompensated significant-get dispersion matters much less for for a longer period pulses. This configuration was accustomed to show the compressibility of our amplified pulses within the preliminary section of our total process. Sooner or later we'd undertake a grating-pair compressor for fantastic payment for top-get dispersion.
Alternative on the Personal computer for a much better one or perhaps a fine adjustment on the Computer orientation plus the used higher voltage is necessary to prevent this phenomenon. A fast pulse picker may be used to improve the nanosecond-scale contrast of your output main pulse.
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Later on, We are going to adopt a laser seed that has a broader spectral bandwidth and apply an acousto-optical programmable dispersive filter to modulate the seed’s spectrum for making comprehensive use with the achieve bandwidth of our regenerative amplifier.
KGW (potassium gadolinium tungstate) can be a crystal that is often utilized being a Raman crystal in Raman spectroscopy. This is a colorless, clear crystal that features a large Raman scattering efficiency and a powerful Raman spectrum, making it ideal for a range of Raman apps.
The particular spectra ended up reconstructed by correcting the measured spectra with an account for the filter transmission features and to the sensitivity functions with the spectrometers at the data publish-processing phase. The spectral dynamics in Each and every sample was measured by fantastic tuning the pump pulse Strength with a computer-controlled attenuator that was built-in within the laser system. Thermal Electricity meter EM (Ophir 3A-PF-twelve) was utilized to evaluate the SC Vitality which was thereafter used to calculate the spectral Electrical power density of the SC radiation. Each of the measurements had been performed with no translation of the sample with regard for the pump beam.
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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 underneath the two crystal placement configurations. The black line denotes the configuration While using the crystals positioned in the same orientation, when the red line is underneath the configuration of crystals positioned in orthogonal orientation.
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The origin from the factor's identify arises from the English term 'potash,' which means pot ashes, plus the Arabic term qali