Related Experiment Video
Updated: Jul 20, 2025
13:02
Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
Published on: February 25, 2017
9.8K
Tunable nanolaser based on quasi-BIC in a slanted resonant waveguide grating
Optics Letters
|August 1, 2023
Summary
Researchers developed a tunable nanolaser using quasi-bound states in the continuum (quasi-BIC) and guided modes. This novel approach enables wavelength tuning for enhanced light-matter interactions in nanophotonics.
Area of Science:
- Photonics and Nanotechnology
- Optoelectronics
- Materials Science
Background:
- Quasi-bound states in the continuum (quasi-BIC) offer strong light-matter interactions for nanolasers.
- Existing quasi-BIC lasers lack significant wavelength tunability.
- Developing tunable nanolasers is crucial for advanced optical applications.
Purpose of the Study:
- To propose and investigate a novel tunable nanolaser design.
- To explore the combination of quasi-BIC and guided modes for wavelength tunability.
- To demonstrate control over lasing intensity distribution.
Main Methods:
- Utilizing a slanted resonant waveguide grating structure.
- Designing an eigenmode localized in both the grating and the 4-dimethylamino-N-methyl-4-stilbazolium tosylate (DAST) layer.
- Performing numerical simulations to analyze laser performance.
Main Results:
- Achieved lasing emission with a low threshold of approximately 7.75 μJ/cm².
- Demonstrated a significant wavelength tuning range of 28 nm.
- Showcased control over the distribution of lasing intensity between transmission and reflection.
Conclusions:
- The proposed structure effectively combines quasi-BIC and guided modes for tunable nanolasers.
- This approach offers a promising pathway for developing advanced, tunable optoelectronic devices.
- The ability to control lasing directionality adds further versatility to the nanolaser design.
