Tomographic imaging with optical parametric-amplifier using pump-mode sweep

Optical Parametric Amplifiers (OPA) when configured as Phase-Sensitive Amplifiers (PSA) are student under various configurations including high pump powers, pump modes, and expand known literature on spatial mode-mixing and realize true image amplification in the PSA [1,2]. In this work we present imaging of unknown target exceeding gain bandwidth of any one pump-mode/power related PSA configuration by sweeping through the pump mode profiles by simulation. This method leverages our conceptual understanding of the PSA and applies the desaturation of detected modes by gain equalization in reconstructing the tomographic image.