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Spectral Tuning of Perovskite Laser via Microheaters.
Tim C Meiler1,2, Yutao Wang1,3, Saurabh Srivastava1
1Institute of Materials Research and Engineering, Agency for Science Technology and Research, 2 Fusionopolis Way, #08-03, Innovis, Singapore 138634, Singapore.
Nano Letters
|June 5, 2025
Summary
We developed a compact perovskite microlaser for tunable light emission. This device achieves rapid, reversible wavelength switching using electrical microheaters and phase transitions, enabling faster and smaller tunable light sources.
Area of Science:
- Nanophotonics
- Materials Science
- Optoelectronics
Background:
- Perovskites offer unique gain and phase-change properties for active nanophotonics.
- Existing tunable devices often suffer from slow modulation or bulky architectures.
Purpose of the Study:
- To demonstrate a compact, electrically tunable microlaser using perovskite metasurfaces.
- To overcome limitations of current wavelength-tunable devices.
Main Methods:
- Integration of electrical microheaters with a perovskite metasurface.
- Leveraging perovskite crystallographic phase tuning for wavelength control.
- Utilizing a high-quality factor cavity based on bound states in the continuum.
Main Results:
- Demonstrated reversible laser wavelength switching between 763 and 783 nm.
- Achieved rapid switching within 13 ms at 2.3 V.
- Showcased efficient heating and fast phase transitions via microheaters.
Conclusions:
- This work enables electrically tunable perovskite light sources.
- Introduces a flexible platform for dynamic control of optical properties.
- Highlights potential for optical communication, sensing, and spectroscopy.
