The KGW Crystal Diaries
The KGW Crystal Diaries
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Determine 8 Intra-cavity pulse amplification method monitored by an oscilloscope. The heart beat underwent an unsaturated amplification due to the mirror destruction limitation.
In summary, we demonstrated that undoped scintillator crystals: BGO, GGG, YSO, LSO and LYSO are economical nonlinear supplies for broadband SC generation during the near-infrared and shorter-wave infrared spectral ranges, when pumped by a hundred and eighty fs elementary harmonic pulses from an amplified Yb:KGW laser. YSO, LSO and LYSO developed two octave-spanning SC spectra, which Assess to SC spectra manufactured in YAG. These elements exhibit rather very similar performances to YAG also regarding threshold and ideal pump pulse energies for SC era. Nonetheless, for what concerns the likelihood to work at substantial laser pulse repetition fee, YSO, LSO and LYSO demonstrate tough Procedure only at ten kHz and swiftly degrade (within a couple of minutes) at twenty kHz. Aside from the relatively lower SC technology threshold (169 nJ), GGG shown exceptional functionality traits in the brief-wave infrared Along with the optimal pump pulse Electrical power of 464 nJ, that is two instances decrease than in YAG: the biggest purple-shifted spectral broadening and the very best spectral Strength density, outperforming KGW and YAG crystals in that part.
], but it will add a lot more Charge to this element. The intra-cavity spectral gain curve could possibly be modulated by inserting an etalon that lessens the particular get within the wavelength with the utmost get factor[
For tungstates, the ytterbium doping concentration can be quite substantial without important quenching as the changed ions have an exceedingly similar ion radius, along with the inter-ion length is relatively huge.
One other was placed with its Np -axis parallel Along with the s-polarized direction. A comparison was manufactured in between a configuration with the crystals placed in exactly the same orientation (
KGW (potassium gadolinium tungstate) is really a crystal that is commonly utilised being a Raman crystal in Raman spectroscopy. This is a colorless, transparent crystal that includes a high Raman scattering performance and a powerful Raman spectrum, making it well suited for A variety of Raman programs.
The spectral measurements of filament-induced luminescence recommend that scintillating Houses of supplies could possibly be readily researched utilizing femtosecond close to-infrared light supply by way of multiphoton excitation during the filamentation routine, which enables effortless separation of excitation and emission wavelengths and small hazard of optical problems.
The brink Strength for SC era (hbox E _ textrm th ) was outlined since the pump pulse Strength, in which the blue-shifted spectral broadening promptly settles to a specific Slice-off wavelength That continues to be Practically consistent Despite additional increase of your pump pulse Electrical power. The ideal Strength (hbox E _textrm opt ), was described since the pump pulse Power, which produces the biggest red-shifted spectral broadening prior to the onset of periodic modulation within the SC read more spectrum on account of filament refocusing.
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KGW has a strong Raman spectrum that extends in the ultraviolet towards the close to infrared, making it useful for a range of applications. The crystal can be used as a reference material for Raman spectroscopy, in addition to a sample for finding out Raman scattering inside the solid point out.
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The origin with the element's title emanates from the English word 'potash,' indicating pot ashes, and also the Arabic phrase qali