Vibrationally Induced Resonances in Lasing

Area of Science:

• Quantum optics
• Nanoscience
• Molecular physics

Background:

• Optical circuits and lasers are continually shrinking.
• Nanolasers, composed of few molecules in plasmonic nanoresonators, offer low energy use and rapid responses.
• These miniaturized lasers have potential applications in devices and biological tissues.

Purpose of the Study:

• To investigate the influence of vibrational structure on the lasing properties of few-molecule systems.
• To analyze the behavior of nanolasers at the molecular scale using first-principles calculations.
• To identify the limitations of the "incoherent drive" approximation in nanolaser research.

Main Methods:

• Utilized a stacked hierarchy approach informed by first principles.
• Modeled few-molecule lasing within plasmonic cavities.
• Explicitly accounted for the entire vibrational manifold of the molecules.

Main Results:

• Demonstrated the significant impact of vibrational structure on nanolaser lasing.
• Observed resonances in laser intensity dependent on Stokes shift, drive strength, and emitter count.
• Identified the boundaries of the "incoherent drive" approximation for nanolasers.

Conclusions:

• Vibrational structure plays a critical role in the performance of few-molecule nanolasers.
• The findings provide a more accurate model for nanolasers at the molecular level.
• This research advances the understanding and design of next-generation miniaturized optical devices.