Indicators on KGW Crystal You Should Know
Indicators on KGW Crystal You Should Know
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For many apps, tungstates supply a mix of various helpful Attributes. Specifically for passive method locking, ytterbium-doped double tungstates are often top-quality to other media with regard to the combination of substantial attain bandwidth, massive cross-sections, and relatively great thermal Houses �?Regardless that in Each individual unique self-control far better supplies might be uncovered.
Besides its use being a Raman crystal, KGW is usually Employed in other optical apps, for example in laser units and like a scintillator in health care imaging.
The monoclinic crystal constructions leads to a pure birefringence, helping to avoid thermally induced polarization rotation and depolarization reduction.
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Various procedures have been adopted to unravel this problem. An acousto-optical programmable dispersive filter may be used to modulate the seed’s spectrum to suppress the gain-narrowing outcome[
The black line denotes the configuration While using the crystals put in the exact same orientation, though the red line is under the configuration of crystals put in orthogonal orientation.
We approach to spice up the heart beat Electricity to earlier mentioned forty mJ in two-stage multi-move amplifiers, equivalent to a attain factor of twenty. In Just about every amplifier, we will likely undertake two cascaded crystals positioned beneath orthogonal orientation to reduce the thermal load on each crystal and compensate with the attain-narrowing influence.
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A multi-pass primary amplifier will further boost the Electrical power to higher than forty mJ. We'll apply cryogenically cooled Yb:KGW technology to restrain the thermal outcome. Two phases of compression will likely be utilized after amplification. The main phase entails a common Treacy-variety compressor, and could compress the heart beat length to beneath 300 fs with an efficiency of close to 70%. The 2nd stage requires a gasoline-crammed multi-move cell[
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]. The dual-crystal configuration lowers the thermal load on Just about every crystal even though maintaining a substantial obtain, and facilitates the payment of each one’s thermal lensing result. Thus, the laser cavity more info can operate with a significant stability assortment about the thermal lensing influence variation.