An Unbiased View of KGW Crystal
An Unbiased View of KGW Crystal
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The crimson-shifted Element of the SC is of useful value, especially for what considerations the effectiveness of broadly tunable optical parametric amplifiers pumped by the elemental harmonics of Yb lasers. The dearth of seed photons in the prolonged-wavelength location on the SC spectrum restrictions the amplification performance and ends in pulse-to-pulse Power fluctuations within the degeneracy area of the optical parametric amplifier. This facet is quantified in Fig. 6a by plotting the SC spectra with regards to spectral Strength density, which was believed by measuring the Electrical power of the axial part of SC radiation (which happens to be the only real nearly valuable Portion of SC emission). KGW crystal generates the very best spectral Strength density within the 1200�?450 nm selection, as pointed out inside of a modern study30.
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KGW (potassium gadolinium tungstate) is often a crystal that is often used as being a Raman crystal in Raman spectroscopy. It is a colorless, transparent crystal that includes a significant Raman scattering efficiency and a strong Raman spectrum, which makes it ideal for a range of Raman purposes.
Ask RP Photonics for virtually any tips concerning tungstate lasers, including femtosecond lasers and significant-electric power lasers.
Figure 4 Beam radius variation on The 2 crystals though switching the focal length of the thermal lensing outcome.
Despite the fact that BGO, GGG, YSO, LSO and LYSO occasionally function laser hosts37, They're primarily determined as effective scintillators, whose scintillation Houses are studied very well38. On the other hand, the nonlinear optical properties of those crystals and so their opportunity to serve as nonlinear components for SC era especially, and every other experiments about nonlinear propagation of intense femtosecond laser pulses, stay pretty poorly studied. To date, GGG, LT23,25 and YSO24 ended up only sketchily analyzed for SC era with Ti:sapphire laser pumping, on the other hand, to the top of our know-how, Not one of the investigated elements were examined with Yb-laser pumping, especially for what fears their performance at pretty superior (tens to many kHz) pulse repetition costs.
A multi-go key amplifier will further Increase the Strength to earlier mentioned forty mJ. We'll utilize cryogenically cooled Yb:KGW technological innovation to restrain the thermal effect. Two levels of compression will be utilised just after amplification. The main phase entails a typical Treacy-form compressor, and could compress the pulse duration to beneath 300 fs by having an performance of around 70%. The next stage includes a gasoline-loaded multi-go cell[
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Equally energies are marked by the dashed traces and their values are labeled within the plots. The similar functions had been also noticed in KGW and YAG crystals, whose spectral broadening here dynamics are revealed to get a comparison in Fig. four.