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Squeezing the local oscillator does not improve signal-to-noise ratio in heterodyne laser radar

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Abstract

The signal-to-noise ratio for heterodyne laser radar with a coherent target-return beam and a squeezed local-oscillator beam is lower than that obtained using a coherent local oscillator, regardless of the method employed to combine the beams at the detector.

© 2007 Optical Society of America

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