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Down the road, an investigation within the spectral attain curve of Yb:KGW in the leading amplifier will likely be performed under cryogenic temperature evolution from seventy seven K to 300 K. The Performing temperature is going to be managed to understand broader gain bandwidth and less shift with the central wavelength of the most crucial amplifier.

In summary, we demonstrated that undoped scintillator crystals: BGO, GGG, YSO, LSO and LYSO are efficient nonlinear products for broadband SC generation within the around-infrared and small-wave infrared spectral ranges, when pumped by a hundred and eighty fs essential harmonic pulses from an amplified Yb:KGW laser. YSO, LSO and LYSO made two octave-spanning SC spectra, which Look at to SC spectra created in YAG. These products exhibit very equivalent performances to YAG also when it comes to threshold and ideal pump pulse energies for SC era. However, for what concerns the chance to function at higher laser pulse repetition fee, YSO, LSO and LYSO demonstrate strong Procedure only at ten kHz and swiftly degrade (inside a couple of minutes) at twenty kHz. Apart from the reasonably minimal SC technology threshold (169 nJ), GGG demonstrated outstanding functionality attributes within the quick-wave infrared While using the best pump pulse Strength of 464 nJ, that is two situations reduce than in YAG: the biggest pink-shifted spectral broadening and the highest spectral Vitality density, outperforming KGW and YAG crystals in that aspect.

In distinction, the seed laser can be amplified to more than 1 mJ underneath the orthogonal orientation configuration.

For tungstates, the ytterbium doping concentration can be quite high devoid of significant quenching since the replaced ions have a very very similar ion radius, and also the inter-ion distance is pretty large.

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The black line denotes the configuration With all the crystals put in the same orientation, even though the purple line is under the configuration of crystals positioned in orthogonal orientation.

Thermal effects are noticeably scaled-down in KGW. This along with the substantial damage threshold make the crystal a fantastic candidate for electric power scaling. Comparing Ba(NO3)two and KGW for Raman software Ba(NO3)2 are more practical in case of ns pulses and KGW �?in case of ps pulses.

We designed a diode-pumped Yb:KGW regenerative amplifier given that the entrance conclude on the kilohertz terawatt laser technique. Broad bandwidth pulses were attained by making use of twin crystals with diverse orientations of their optical axes[

Though BGO, GGG, YSO, LSO and LYSO occasionally serve as laser hosts37, These are primarily recognized as successful scintillators, whose scintillation Attributes are studied fairly well38. Even so, the nonlinear optical Houses of such crystals and so their probable to function nonlinear materials for SC technology in particular, and every other experiments concerning nonlinear propagation of intense femtosecond laser pulses, remain extremely poorly examined. So far, GGG, LT23,twenty five and YSO24 ended up only sketchily examined for SC generation with Ti:sapphire laser pumping, nonetheless, to the most effective of our information, none of the investigated components were examined with Yb-laser pumping, specifically for what considerations their general performance at really higher (tens to hundreds of kHz) pulse repetition premiums.

The Yb:KGW laser method incorporates a quasi-3-amount behavior. The online acquire in the Yb:KGW crystal was not large: many tens more info of roundtrips ended up necessary to amplify the nanojoule seed to your millijoule stage. As a result, the achieve-narrowing impact was inevitable in Yb:KGW regenerative amplifiers.

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