Faraday Tests of Probe Line (tvm & rxp)

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Presentation transcript:

Faraday Tests of Probe Line (tvm & rxp) Noise Tests. Photodiode Qualification: 3 mm with preamp, 3 mm no preamp, 1 mm no preamp - all are suitable. Observe mode-locked structure with the 1 mm photodiode. Faraday Rotation with Diode Laser Internal Modulation (749 nm). Faraday Rotation with Mode-Locked Ti-Saph (790 nm). K-M CW Laser Noise: 0.54% K-M Mode-Locked Laser Noise: 0.11% Detector Photodiode (with preamp) Noise : 37 nV/root Hz Lock-In Noise : 7 nV/root Hz Faraday Rotation with 19 mm TGG glass rod (V = 0.30 min/gauss-cm) Coil: 0 -18 gauss Diode Laser Internal Modulation Sensitivity ~ 1 mdeg K-M Laser Chopper Modulation Faraday Sensitivity ~20 mrad K-M Laser Coil Modulation Faraday Sensitivity ~1 mdeg 8/8/07

8/8/07