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Ultrathin, Dynamically Controllable Circularly Polarized Emission Laser Enabled by Resonant Chiral Metasurfaces.
Ioannis Katsantonis1,2, Anna C Tasolamprou2, Eleftherios N Economou1,3
1Foundation of Research and Technology Hellas, Institute of Electronic Structure and Laser, Heraklion 71110, Greece.
ACS Photonics
|January 20, 2025
Summary
Researchers developed a novel chiral metasurface laser for tunable, circularly polarized emission. This ultrathin, low-cost device offers dynamic control over laser polarization, promising advancements in photonics and materials science.
Area of Science:
- Photonics and Materials Science
- Quantum Optics
- Nanotechnology
Background:
- Metasurfaces enable novel optical functionalities.
- Circularly polarized (CP) laser emission is crucial for advanced applications.
- Achieving tunable and controllable CP lasing remains a challenge.
Purpose of the Study:
- To demonstrate a simple, low-cost, and ultracompact chiral metasurface laser.
- To achieve tunable and dynamically controllable circularly polarized (CP) coherent lasing output.
- To explore the potential of chiral metasurfaces coupled with quantum gain media for laser applications.
Main Methods:
- Design of a chiral resonant metasurface.
- Strong local coupling of the metasurface with a quantum gain medium (quantum emitters).
- Detailed numerical investigations of lasing emission properties.
Main Results:
- Successful implementation of an ultrathin metasurface laser.
- Generation of tunable circularly polarized (CP) coherent lasing output.
- Demonstration of dynamic lasing-polarization control by altering metasurface chirality or pump polarization.
Conclusions:
- The chiral metasurface laser offers a versatile and straightforward strategy for generating tailored CP emission.
- The design shows great potential for future applications in photonics and materials science.
- This work advances the development of compact and controllable CP laser sources.
