Facts About KGW Crystal Revealed
Facts About KGW Crystal Revealed
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Sooner or later, an investigation to the spectral get curve of Yb:KGW in the most crucial amplifier might be performed beneath cryogenic temperature evolution from seventy seven K to 300 K. The Functioning temperature is going to be managed to realize broader attain bandwidth and less change at the central wavelength of the leading amplifier.
Consequently There may be little flexibility for optimizing the dispersion compensation impact. Sub-200 fs pulses can be predicted that has a broader bandwidth seed input. Because of the twin-crystal configuration, the laser cavity delivers a around diffraction limited laser beam with M
In contrast, the seed laser might be amplified to more than one mJ under the orthogonal orientation configuration.
For tungstates, the ytterbium doping focus can be quite substantial devoid of significant quenching since the changed ions have an incredibly related ion radius, as well as the inter-ion distance is relatively massive.
The opposite was placed with its Np -axis parallel With all the s-polarized path. A comparison was created amongst a configuration Along with the crystals positioned in the exact same orientation (
KGW (potassium gadolinium tungstate) is often a crystal that is usually used as a Raman crystal in Raman spectroscopy. It is a colorless, clear crystal that has a superior Raman scattering performance and a strong Raman spectrum, rendering it appropriate for An array of Raman purposes.
We approach to spice up the heartbeat Electrical power to over 40 mJ in two-stage multi-pass amplifiers, similar to a get variable of check here 20. In Each individual amplifier, we will also undertake two cascaded crystals put underneath orthogonal orientation to decrease the thermal load on Just about every crystal and compensate to the get-narrowing impact.
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The Yb:KGW laser program provides a quasi-3-amount actions. The net obtain of your Yb:KGW crystal was not substantial: quite a few tens of roundtrips were required to amplify the nanojoule seed to your millijoule amount. Therefore, the gain-narrowing effect was inevitable in Yb:KGW regenerative amplifiers.
Figure four Beam radius variation on the two crystals when changing the focal size on the thermal lensing result.
The origin with the aspect's name arises from the English phrase 'potash,' meaning pot ashes, plus the Arabic phrase qali