The smart Trick of KGW Crystal That Nobody is Discussing
The smart Trick of KGW Crystal That Nobody is Discussing
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Publish your investigation on American Element Site Unravelling the dissociation pathways of acetic acid upon electron transfer in potassium collisions: experimental and theoretical research.
The thermal conductivity of prevalent double tungstates is of the purchase to 3–4 W/(K m) �?which is not terrible compared with other laser crystals (Though quite a few instances less than for YAG), and relatively massive in comparison with the thermal conductivity of typical glasses.
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In summary, we shown that undoped scintillator crystals: BGO, GGG, YSO, LSO and LYSO are productive nonlinear materials for broadband SC era while in the close to-infrared and limited-wave infrared spectral ranges, when pumped by 180 fs basic harmonic pulses from an amplified Yb:KGW laser. YSO, LSO and LYSO produced two octave-spanning SC spectra, which Look at to SC spectra produced in YAG. These products exhibit very comparable performances to YAG also with regard to threshold and optimum pump pulse energies for SC generation. Having said that, for what worries the possibility to function at significant laser pulse repetition price, YSO, LSO and LYSO exhibit long lasting operation only at 10 kHz and quickly degrade (within just a few minutes) at 20 kHz. Moreover the somewhat reduced SC era threshold (169 nJ), GGG demonstrated outstanding functionality attributes in the short-wave infrared While using the optimum pump pulse Vitality of 464 nJ, which can be two instances lessen than in YAG: the most important red-shifted spectral broadening and the best spectral Vitality density, outperforming KGW and YAG crystals in that component.
The datasets utilized and/or analysed through The existing review available in the corresponding author on sensible ask for.
The comparison with glasses is acceptable For the reason that substantial obtain bandwidth makes it possible for e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.
In the future, we will adopt a laser seed having a broader spectral bandwidth and apply an acousto-optical programmable dispersive filter to modulate the seed’s spectrum to produce entire use with the obtain bandwidth of our regenerative amplifier.
Comparison of spectral Electrical power densities of supercontinua created while in the situations of optimal pumping from the investigated components.
Thermal outcomes are noticeably smaller sized in KGW. This combined with the significant damage threshold make the crystal a great candidate for electric power scaling. Evaluating Ba(NO3)2 and KGW for Raman application Ba(NO3)2 are simpler in case of ns pulses and KGW �?in case of ps pulses.
The threshold Electrical power for SC era (hbox E _ textrm th ) was described as being the pump pulse energy, where by the blue-shifted spectral broadening promptly settles to a certain Minimize-off wavelength That is still Nearly consistent Despite having even more maximize of the pump pulse Electrical power. The optimum energy (hbox E _textrm decide ), was described as being the pump pulse Strength, which provides the largest red-shifted spectral broadening ahead of the onset of periodic modulation within the SC spectrum as a consequence of filament refocusing.
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The Yb:KGW laser program contains a quasi-3-degree actions. The net gain on the Yb:KGW crystal was not significant: numerous tens of roundtrips had been needed to amplify the nanojoule seed to a millijoule amount. Consequently, the achieve-narrowing influence was inescapable in click here Yb:KGW regenerative amplifiers.
Figure four Beam radius variation on the two crystals though shifting the focal duration on the thermal lensing effect.
]. The twin-crystal configuration lowers the thermal load on Each and every crystal whilst keeping a high obtain, and facilitates the payment of every one’s thermal lensing impact. For that reason, the laser cavity can do the job with a substantial steadiness assortment about the thermal lensing effect variation.