The smart Trick of KGW Crystal That Nobody is Discussing
The smart Trick of KGW Crystal That Nobody is Discussing
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Prior perform showed that the dual-crystal configuration can be utilized to compensate to the thermal lensing influence[
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We utilized a transmission grating (TG) for a dispersive element inside our stretcher and compressor. A compact configuration was adopted, exactly where the stretcher and the compressor shared a single grating similar to that in Ref.
At the same time, a shorter laser wavelength is often acquired; it can be done to operate which has a quantum defect effectively down below 1%. For a consequence, the warmth era could be so tiny this partly compensates the reduced thermal conductivity.
In contrast, the seed laser may be amplified to over one mJ beneath the orthogonal orientation configuration.
For tungstates, the ytterbium doping focus can be extremely superior without significant quenching as the replaced ions have a really similar ion radius, as well as inter-ion length is comparatively big.
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The black line denotes the configuration Using the crystals placed in the same orientation, while the crimson line is under the configuration of crystals placed in orthogonal orientation.
We system to spice up the pulse Strength to previously mentioned 40 mJ in two-stage multi-pass amplifiers, corresponding to a attain element of twenty. In Just about every amplifier, we may even undertake two cascaded crystals placed underneath orthogonal orientation to reduce the thermal load on Just about every crystal and compensate for the attain-narrowing influence.
The crimson-shifted Section of the SC spectrum in BGO has the lowest spectral Power density, that is 1–two orders of magnitude lessen than in the remainder of the products. Having said that, pretty very low Electricity threshold of SC era, along with low exceptional pump energy in BGO, must be pointed out. The approximated spectral Strength densities made in LSO and LYSO are really similar to YAG all over the main Element of the SC spectrum. By far the most intriguing getting in that regard is GGG crystal, which, Even with here pretty reasonable blue-shifted spectral broadening, provides the largest spectral purple-shift and the very best spectral Electrical power density inside the 1600�?000 nm vary, which is almost an buy of magnitude greater than that developed in YAG.
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A multi-pass main amplifier will further boost the Electrical power to higher than forty mJ. We'll use cryogenically cooled Yb:KGW technologies to restrain the thermal effect. Two levels of compression might be utilised immediately after amplification. The primary stage involves a standard Treacy-variety compressor, and could compress the heart beat length to below three hundred fs using an efficiency of close to 70%. The second phase entails a fuel-crammed multi-pass mobile[
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