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We utilised a transmission grating (TG) like a dispersive part in our stretcher and compressor. A compact configuration was adopted, wherever the stretcher as well as the compressor shared a person grating comparable to that in Ref.

The red-shifted Section of the SC is of functional worth, specifically for what fears the performance of broadly tunable optical parametric amplifiers pumped by the fundamental harmonics of Yb lasers. The dearth of seed photons in the lengthy-wavelength region in the SC spectrum restrictions the amplification efficiency and results in pulse-to-pulse energy fluctuations within the degeneracy region of the optical parametric amplifier. This part is quantified in Fig. 6a by plotting the SC spectra concerning spectral Electricity density, which was estimated by measuring the Electrical power in the axial part of SC radiation (which is the one practically valuable part of SC emission). KGW crystal generates the best spectral Vitality density during the 1200�?450 nm variety, as observed inside of a new study30.

In distinction, the seed laser might be amplified to about 1 mJ underneath the orthogonal orientation configuration.

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The black line denotes the configuration with the crystals put in the same orientation, while the crimson line is underneath the configuration of crystals put in orthogonal orientation.

The particular spectra were reconstructed by correcting the measured spectra using an account for that filter transmission capabilities and with the sensitivity features on the spectrometers at the info article-processing phase. The spectral dynamics in Just about every sample was calculated by high-quality tuning the pump pulse Power with a computer-controlled attenuator which was built-in while in the laser process. Thermal Power meter EM (Ophir 3A-PF-12) was used to measure the SC Vitality which was thereafter accustomed to estimate the spectral Vitality density with the SC radiation. Every one of the measurements have been carried out with none translation with the sample with respect to the pump beam.

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The Yb:KGW laser system features a quasi-a few-amount habits. The online attain with the Yb:KGW crystal wasn't large: numerous tens of roundtrips have been needed to amplify the nanojoule seed to the millijoule stage. Hence, the acquire-narrowing outcome was unavoidable in Yb:KGW regenerative amplifiers.

Determine eight Intra-cavity pulse amplification approach monitored by an oscilloscope. The heartbeat underwent an unsaturated amplification due to the mirror harm limitation.

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