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Updated: Mar 2, 2026

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Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System
Published on: July 18, 2015
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Dynamical dispersion engineering in coupled vertical cavities employing a high-contrast grating
Alireza Taghizadeh1, Il-Sug Chung2
1DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, Building 343, DK-2800 Kgs., Lyngby, Denmark.
Scientific Reports
|May 20, 2017
Summary
Researchers developed a new method to control the photon
Area of Science:
- Optics and Photonics
- Quantum Optics
Background:
- The effective mass of photons in optical cavities is crucial for light-matter interactions.
- Controlling this parameter is key for advancing quantum optics and laser technologies.
Purpose of the Study:
- To propose and demonstrate a novel method for controlling the photon's effective mass.
- To explore the dynamic tunability of photon effective mass in coupled photonic cavities.
Main Methods:
- Utilizing coupled photonic cavities with a high-contrast grating (HCG) as a coupling reflector.
- Engineering the angular dependence of the coupling strength by designing the HCG's reflection phase and amplitude response.
Main Results:
- Demonstrated a method for controlling photon effective mass using HCG-based coupled cavities.
- Showcased a system capable of dynamically tuning photon effective mass while maintaining resonance frequency.
Conclusions:
- Full control and dynamic tuning of photon effective mass open new avenues in cavity quantum electrodynamics.
- This technique can enable new possibilities for polariton laser applications, such as controlling condensate formation.

