KGW Crystal Things To Know Before You Buy
KGW Crystal Things To Know Before You Buy
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We made use of a transmission grating (TG) to be a dispersive ingredient within our stretcher and compressor. A compact configuration was adopted, the place the stretcher along with the compressor shared one grating much like that in Ref.
Figure seven shows the calculated dispersion compensation final result. The compressed pulse duration is close to 185 fs if the period of input pulses is a hundred and fifty fs. The discrepancy in between them will probably be noticeably lessened with a longer pulse input simply because uncompensated superior-get dispersion matters considerably less for extended pulses. This configuration was used to demonstrate the compressibility of our amplified pulses in the preliminary section of our total program. Down the road we'd undertake a grating-pair compressor for great compensation for top-get dispersion.
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Amplified pulses with an Vitality earlier mentioned 2.five mJ is usually expected by applying a greater pump electric power to your regenerative amplifier and rendering it work in the saturation degree. The laser fluence of ~1 J/cm2 about the dichroic mirrors is considered to generally be below the harm threshold of higher-top quality dielectric-coated mirrors.
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KGW (potassium gadolinium tungstate) can be a crystal that is commonly utilized being a Raman crystal in Raman spectroscopy. It's really a colorless, clear crystal that includes a high Raman scattering efficiency and a powerful Raman spectrum, which makes it suited to An array of Raman applications.
]. This method was based upon The reality that the spectral emission cross-part curves vary from one another when laser polarization is paralleled to the several optical axis of Yb-doped double tungstates[
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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）
KGW has a powerful Raman spectrum that extends with the ultraviolet to your near infrared, making it helpful for A variety of apps. The crystal may be used for a reference product for Raman spectroscopy, in addition to a sample for researching Raman scattering in the strong state.
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An example of such behaviour is demonstrated in Fig. 7a. The character of spectral improvements is highlighted in Fig. 7d, which reveals how the SC spectrum about the prolonged-wavelength facet shrinks noticeably, from 1800 nm to 1450 nm, just following eight minutes of exposure time in the stationary sample. LT crystal shown to some degree better long-term overall performance: at pulse repetition costs of nearly a hundred kHz no narrowing on possibly facet on the SC spectrum was detected. On the other hand, quick narrowing with the SC spectrum in LT crystal was noticed soon after the very first 5 minutes of operation when the pulse repetition rate was established at two hundred kHz (information not revealed). In distinction to the above components, BGO and GGG shown excellent SC era performances without any spectral adjustments at a pulse repetition fee of 200 kHz, as attested by the time series of SC spectra in BGO and GGG, proven in Fig. 7b and c, respectively. Figure 7e and file outline identical styles of SC spectra firstly and at the conclusion of one hour-Long lasting measurement in each elements.