New Step by Step Map For KGW Crystal
New Step by Step Map For KGW Crystal
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In its elemental kind, potassium contains a silvery gray metallic overall look, but its compounds (including potassium hydroxide) tend to be more regularly Employed in industrial and chemical purposes.
In distinction, the seed laser is often amplified to above 1 mJ under the orthogonal orientation configuration.
The comparison with glasses is appropriate Because the significant achieve bandwidth allows e.g. tungstate femtosecond lasers and tunable lasers to compete with glass lasers.
Even so, after Nd3+:YAG grew to become commercially obtainable, the interest in CaWO4 dropped sharply. In afterwards years, particular other tungstate crystals started to attract loads of awareness.
KGW (potassium gadolinium tungstate) is actually a crystal that is usually employed like a Raman crystal in Raman spectroscopy. This is a colorless, transparent crystal which has a higher Raman scattering efficiency and a robust Raman spectrum, rendering it suited to A variety of Raman apps.
Thermal effects are substantially more compact in KGW. This combined with the significant hurt threshold make the crystal a superb candidate for electricity scaling. Evaluating Ba(NO3)2 and KGW for Raman software Ba(NO3)two are simpler in the event of ns pulses and KGW �?in the event of ps pulses.
Firstly, Considering that the filament-induced luminescence originates from simultaneous absorption of various photons, whose complete Power exceeds the bandgap Electricity of material, it provides easy separation of excitation and emission wavelengths and presents quite strong signal Irrespective of remaining emitted about the entire solid angle. The position on the filament keep track of Within the crystal could be simply altered in a wanted way by different the pump pulse Power, Whilst the intensity clamping in a lightweight filament significantly lessens the risk of optical hurt. These features could be practical for obtaining added information about crystal homogeneity and reveal the existence and distribution of various dopants within the sample.
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A multi-pass principal amplifier will even more Strengthen the Electrical power to above 40 mJ. We're going to utilize cryogenically cooled Yb:KGW technology to restrain the thermal impact. Two phases of compression might be applied right after amplification. The very first phase includes a typical Treacy-variety compressor, and could compress the pulse length to underneath three hundred fs having an performance of about 70%. The next phase consists of a gasoline-filled multi-go cell[
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]. The dual-crystal configuration lowers the thermal load on Just about every crystal although protecting a large attain, and facilitates the compensation of each’s thermal lensing outcome. As a result, the laser cavity can get the website job done with a sizable security array over the thermal lensing impact variation.