Solid‐State Red Laser with a Single Longitudinal Mode from Carbon Dots
- 22 September 2021
- journal article
- research article
- Published by Wiley in Angewandte Chemie
- Vol. 60 (48), 25514-25521
- https://doi.org/10.1002/anie.202111285
Abstract
Miniaturized solid-state lasers with a single longitudinal mode are vital for various photonic applications. Here we prepare red-emissive carbon dots (CDs) with a photoluminescence quantum yield (PLQY) of 65.5% by combining graphitic nitrogen doping and surface modification. High-concentration doping alters the CDs’ emission from blue to red, while the electron-donating groups and polymer coating on their surfaces improve the PLQY and photostability. The CDs exhibit excellent stimulated emission characteristics, with a low threshold of amplified spontaneous emission (ASE) and long gain lifetime. A planar microcavity with only one resonant mode, which fitted with the CDs’ ASE peak, was constructed. Combining the CDs and microcavity produced a solid-state laser with a single longitudinal mode, a linewidth of 0.14 nm and a signal-to-noise ratio of 14.8 dB. Our results will aid the development of colorful solid-state micro/nano lasers with potential use in practical photonics.Keywords
Funding Information
- National Natural Science Foundation of China (21905253, 51973200)
- Natural Science Foundation of Jilin Province (61875195)
- China Postdoctoral Science Foundation (2018M640681, 2019T120632)
This publication has 68 references indexed in Scilit:
- Common Origin of Green Luminescence in Carbon Nanodots and Graphene Quantum DotsACS Nano, 2014
- Amplified Spontaneous Green Emission and Lasing Emission From Carbon NanoparticlesAdvanced Functional Materials, 2013
- Improvement of Photoluminescence of Graphene Quantum Dots with a Biocompatible Photochemical Reduction Pathway and Its Bioimaging ApplicationACS Applied Materials & Interfaces, 2013
- Surface Chemistry Routes to Modulate the Photoluminescence of Graphene Quantum Dots: From Fluorescence Mechanism to Up‐Conversion Bioimaging ApplicationsAdvanced Functional Materials, 2012
- Organic solid‐state integrated amplifiers and lasersLaser & Photonics Reviews, 2012
- Observation of Lasing Emission from Carbon Nanodots in Organic SolventsAdvanced Materials, 2012
- Existence of continuous-wave threshold for organic semiconductor lasersPhysical Review B, 2011
- Laser mode feeding by shaking quantum dots in a planar microcavityNature Photonics, 2011
- Single-cell biological lasersNature Photonics, 2011
- The dynamics of gain-narrowing in a ladder-type π-conjugated polymerChemical Physics Letters, 1999