Faraday Rotation experiment plans

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Presentation transcript:

Faraday Rotation experiment plans Cathode R&D Faraday Rotation experiment plans

Faraday Rotation Polarization measurements without the NEA effects Study of the structures Independent measurements of left – right asymmetry Very high resolution polarization measurement

Basic principle

What can we measure? Measure spin coherence evolution with time Relative values of polarization of different samples Right-left hand polarization asymmetry With different probe wavelengths we can measure depolarization effects as a function of energy

Working out the numbers Spot size : ~100mm Pump power : ~20mW Probe power: ~5mW Expected theta rel~8mm-3

Plans Equipment Readout system already available TiSapphire modelocked laser ordered by U. of Wisconsin Where we put the Ti sapphire laser Which pump laser we use Other.. Saxet new sample arriving today (thin GaAs layer with thick W lines on top) Collaboration with U.of New Mexico for samples growth