Observation of Noiseless Image Amplification by an Optical Parametric Amplifier
Sang-Kyung Choi, Michael Vasilyev, Prem Kumar
A spatially-broadband optical parametric amplifier is used for image amplification. In the phase-sensitive configuration, we observe a noise figure of −0.1± 0.3dB for a gain of 2.4, which is 2dB lower than the quantum limit for an ideal phase-insensitive amplifier. Image pre-amplification before loss is shown to improve the detected signal-to-noise ratio.
Kluwer Academic Publishers eBooks•Dec 19, 2005•1 citation