Amplifying Frequency Up-Converted Infrared Signals with a Molecular Optomechanical Cavity

TL;DR

This paper presents a method to amplify weak infrared signals converted to visible light via molecular optomechanical systems, achieving over 1000-fold enhancement to improve detection.

Contribution

It introduces a novel amplification mechanism leveraging strong coupling and Stokes sideband pump in molecular optomechanics for signal enhancement.

Findings

Achieves over 1000-fold amplification of up-converted signals

Demonstrates feasibility of infrared to visible signal conversion

Utilizes molecular collective modes for enhanced coupling

Abstract

Frequency up-conversion, enabled by molecular optomechanical coupling, has recently emerged as a promising approach for converting infrared signals into the visible range through quantum coherent conversion of signals. However, detecting these converted signals poses a significant challenge due to their inherently weak signal intensity. In this work, we propose an amplification mechanism capable of enhancing the signal intensity by a factor of 1000 or more for the frequency up-converted infrared signal in a molecular optomechanical system. The mechanism takes advantage of the strong coupling enhancement with molecular collective mode and Stokes sideband pump. This work demonstrates a feasible approach for up-converting infrared signals to the visible range.