]. Due to the quick storage time, Ti:sapphire is usually pumped by frequency-doubled Nd:YAG or Nd:glass stable-condition lasers, which ends up in a bulky and complicated method with large Price tag. When compared with typical CPA laser systems, the OPCPA system can get hold of a shorter pulse duration and an increased peak electric power.
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In conclusion, we demonstrated that undoped scintillator crystals: BGO, GGG, YSO, LSO and LYSO are successful nonlinear elements for broadband SC technology during the close to-infrared and short-wave infrared spectral ranges, when pumped by a hundred and eighty fs basic harmonic pulses from an amplified Yb:KGW laser. YSO, LSO and LYSO produced two octave-spanning SC spectra, which Assess to SC spectra made in YAG. These elements show quite equivalent performances to YAG also with regard to threshold and exceptional pump pulse energies for SC generation. Nonetheless, for what concerns the likelihood to function at significant laser pulse repetition amount, YSO, LSO and LYSO clearly show tough operation only at 10 kHz and swiftly degrade (inside of a few minutes) at 20 kHz. In addition to the somewhat very low SC technology threshold (169 nJ), GGG shown exceptional functionality features from the limited-wave infrared With all the ideal pump pulse Vitality of 464 nJ, which can be two periods decreased than in YAG: the most important crimson-shifted spectral broadening and the best spectral Electrical power density, outperforming KGW and YAG crystals in that part.
The datasets employed and/or analysed in the course of The existing study out there through the corresponding author on affordable request.
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Another was positioned with its Np -axis parallel with the s-polarized route. A comparison was made involving a configuration With all the crystals put in the identical orientation (
Dynamic expression of genes encoding subunits of inward rectifier potassium (Kir) channels during the yellow fever mosquito Aedes aegypti.
We strategy to boost the pulse Strength to earlier mentioned forty mJ in two-phase multi-go amplifiers, corresponding to a acquire aspect of 20. In Each and every amplifier, we may even undertake two cascaded crystals positioned less than orthogonal orientation to lessen the thermal load on Just about every crystal and compensate for that achieve-narrowing effect.
The edge Strength for SC era (hbox E _ textrm th ) was described as being the pump pulse Electrical power, in which the blue-shifted spectral broadening quickly settles to a specific Minimize-off wavelength that remains Just about continuous Despite even more increase of your pump pulse Power. The ideal Electrical power (hbox E _textrm opt ), was outlined since the pump pulse Strength, which creates the biggest pink-shifted spectral broadening prior to the onset of periodic modulation in the SC spectrum because of filament refocusing.
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The Yb:KGW laser program has a quasi-three-stage actions. The net obtain with the Yb:KGW crystal wasn't large: various tens of roundtrips were needed to amplify the nanojoule seed into a millijoule stage. Thus, the acquire-narrowing result was unavoidable in Yb:KGW regenerative amplifiers.
Figure 8 Intra-cavity pulse amplification process monitored by an oscilloscope. The heartbeat underwent an unsaturated amplification because of the mirror hurt limitation.
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