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Related Concept Videos

Standing Waves in a Cavity01:28

Standing Waves in a Cavity

A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:

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Related Experiment Video

Updated: Jul 3, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Multi-state dynamically switchable frequency combs in cavity optomechanical-thermal systems.

Haijing Li, Xiangming Xu, Shuwen Chen

    Optics Express
    |July 2, 2026
    PubMed
    Summary
    This summary is machine-generated.

    Researchers demonstrate switchable optical frequency combs (OFCs) in optomechanical-thermal systems. This innovation allows dynamic control over multiple OFC states, enhancing applications in spectroscopy and optical communications.

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    Last Updated: Jul 3, 2026

    Generation and Coherent Control of Pulsed Quantum Frequency Combs
    06:42

    Generation and Coherent Control of Pulsed Quantum Frequency Combs

    Published on: June 8, 2018

    Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters
    15:25

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    Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
    12:18

    Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

    Published on: August 5, 2013

    Area of Science:

    • Photonics
    • Optomechanics
    • Nonlinear Optics

    Background:

    • Whispering-gallery-mode resonators are crucial for nonlinear optical phenomena.
    • Cavity optomechanical-thermal systems offer unique interactions between light, mechanics, and heat.
    • Optical frequency combs (OFCs) are essential for precise frequency metrology and spectroscopy.

    Purpose of the Study:

    • To numerically demonstrate dynamically multi-state switchable optomechanical optical frequency combs (OFCs).
    • To exploit the staircase effect and bistability in optomechanical-thermal systems for state switching.
    • To explore the impact of pump power on OFC state control and comb tooth count.

    Main Methods:

    • Numerical simulations of whispering-gallery-mode cavity optomechanical-thermal systems.
    • Utilizing thermal instability to induce staircase effects and bistability.
    • Employing forward laser detuning sweeping to switch between discrete OFC states.

    Main Results:

    • Demonstrated switching among 4 discrete OFC states at 480 μW pump power, increasing comb teeth from 15 to 27.
    • Achieved switching among 6 discrete OFC states at 2 mW pump power, with comb teeth increasing from 23 to 43.
    • Confirmed robust bistable switching, enabling two stable OFC states at identical laser detuning.

    Conclusions:

    • The study presents a flexible scheme for multi-state manipulation of optomechanical OFCs.
    • The physical mechanism involves thermal-instability-driven staircase effects and coupled feedback loops.
    • Potential applications include adaptive spectroscopy, multichannel optical communication, and reconfigurable photonic systems.