Frequency upconversion of infrared signals via molecular cavity optomechanical systems with gain

• URL: http://arxiv.org/abs/2606.17877v1
• Date: Tue, 16 Jun 2026 12:50:13 GMT
• Title: Frequency upconversion of infrared signals via molecular cavity optomechanical systems with gain
• Abstract summary: We propose a scheme that incorporates gain into the infrared cavity of a molecular cavity optomechanical system comprising two cavities and an ensemble of N molecules.<n>The upconversion process, which relies on IR absorption and Raman scattering associated with specific vibrational modes, is significantly amplified by the incorporation of gain under the red-detuned conditions.
• Score: 4.857867070917862
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Molecular cavity optomechanical systems have recently emerged as a promising platform for enhancing infrared detection sensitivity, owing to their ability to up-convert low-frequency infrared (IR) photons to visible frequency range. Generally, under red-detuned pumping in such systems, the ideal conversion efficiency of the IR signal approaches 1. To overcome this efficiency constraint, we propose a scheme that incorporates gain into the infrared cavity of a molecular cavity optomechanical system comprising two cavities and an ensemble of N molecules. The upconversion process, which relies on IR absorption and Raman scattering associated with specific vibrational modes, is significantly amplified by the incorporation of gain under the red-detuned conditions. Moreover, our analysis demonstrates that the added noise is maintained near 0.5.

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