AI Article Synopsis
- Chiral light-matter interactions are gaining attention in biophysics and quantum optics, with previous studies focusing on passive resonators and spontaneous emission.
- The introduction of a biological chiral laser uses stimulated emission to enhance these interactions, utilizing chiral biomolecules like green fluorescent proteins in microcavities.
- Experiments reveal that the lasing dissymmetry factor is linked to the absorption dissymmetry of the molecules, shedding light on the mechanisms of chiral interactions and their potential applications in biophysics and quantum biophotonics.
Article Abstract
Chiral light-matter interactions have emerged as a promising area in biophysics and quantum optics. Great progress in enhancing chiral light-matter interactions have been investigated through passive resonators or spontaneous emission. Nevertheless, the interaction between chiral biomolecules and stimulated emission remains unexplored. Here we introduce the concept of a biological chiral laser by amplifying chiral light-matter interactions in an active resonator through stimulated emission process. Green fluorescent proteins or chiral biomolecules encapsulated in Fabry-Perot microcavity served as the gain material while excited by either left-handed or right-handed circularly polarized pump laser. Owing to the nonlinear pump energy dependence of stimulated emission, significant enhancement of chiral light-matter interactions was demonstrated. Detailed experiments and theory revealed that a lasing dissymmetry factor is determined by molecular absorption dissymmetry factor at its excitation wavelength. Finally, chirality transfer was investigated under a stimulated emission process through resonance energy transfer. Our findings elucidate the mechanism of stimulated chiral light-matter interactions, providing better understanding of light-matter interaction in biophysics, chiral sensing, and quantum biophotonics.
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