Squeezing the local oscillator does not improve signal-to-noise ratio in heterodyne laser radar.
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.
Rubin
Mark A
MA
Lincoln Laboratory, Massachusetts Institute of Technology, Lexington, Massachusetts 02420-9185, USA. rubin@LL.mit.edu
Kaushik
Sumanth
S