Lecture 9 Noise and drift Spr2010

Lecture 9 Noise and drift Spr2010 - Noise and Drift Noise...

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Noise and Drift i • Noise sources • Noise Characterization • Noise abatement Si l • Signal recovery Spring 2010 Mat 288S Optoelectronic Measurements 1
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Noise Sources Thermal noise: dB B th R Tf k I 3 4 = Shot noise: shunt dB d p shot f I I q I 3 ) ( 2 + = Thermally ionized traps, miscellaneous effects 1/f noise: Readout noise: Electronic circuitry associated with arrays Interference: EMI: power line harmonics, radio and Thermal drift: Amplifier gain depends on temperature EMI: power line harmonics, radio and microwaves, digital and power switching noise Spring 2010 MAT 288S Optoelectronic Measurements 2 Thermal drift:
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