Related Experiment Video
Updated: Aug 28, 2025
09:20
Fabrication of Low Temperature Carbon Nanotube Vertical Interconnects Compatible with Semiconductor Technology
Published on: December 7, 2015
7.8K
Room Temperature Lasing from Semiconducting Single-Walled Carbon Nanotubes
Jia-Shiang Chen1,2, Anushka Dasgupta3, Darien J Morrow2
1Center for Molecular Quantum Transduction, Northwestern University, Evanston, Illinois 60208, United States.
ACS Nano
|September 19, 2022
Summary
Researchers achieved room temperature excitonic lasing in semiconducting single-walled carbon nanotubes (SWCNTs) by coupling them to polymer microspheres. This breakthrough enables tunable near-infrared nanolasers for advanced optical applications.
Area of Science:
- Optoelectronics
- Materials Science
- Nanotechnology
Background:
- Miniaturized near-infrared semiconductor lasers are crucial for optical interconnects, neuromorphic computing, and optogenetics.
- Semiconducting single-walled carbon nanotubes (SWCNTs) possess ideal properties for nanolaser development but have not yet achieved lasing.
- Previous efforts focused on enhancing spontaneous emission, but direct excitonic lasing remained elusive.
Purpose of the Study:
- To demonstrate room temperature excitonic lasing in SWCNTs.
- To develop an optimized cavity-emitter integration scheme for SWCNT nanolasers.
- To explore the potential of SWCNTs for tunable near-infrared nanolasers.
Main Methods:
- Utilized a self-assembly process for optimized cavity-emitter integration.
- Coupled SWCNT emission to whispering gallery modes of polymer microspheres.
- Characterized lasing performance, including threshold and stability.
Main Results:
- Achieved room temperature excitonic lasing in SWCNTs with an average threshold of 4.5 kW/cm2.
- Demonstrated stable lasing for prolonged durations due to the photostability of SWCNTs.
- Successfully coupled SWCNT emission to polymer microsphere resonators.
Conclusions:
- This work presents the first experimental realization of excitonic lasing from SWCNTs.
- The developed method offers a pathway for creating tunable, low-energy near-infrared nanolasers.
- SWCNT-based nanolasers hold promise for optical signal processing, in vivo biosensing, and optoelectronic devices.
