Optical Gain and Stimulated Emission in Nanocrystal Quantum Dots
Abstract
The development of optical gain in chemically synthesized semiconductor nanoparticles (nanocrystal quantum dots) has been intensely studied as the first step toward nanocrystal quantum dot lasers. We examined the competing dynamical processes involved in optical amplification and lasing in nanocrystal quantum dots and found that, despite a highly efficient intrinsic nonradiative Auger recombination, large optical gain can be developed at the wavelength of the emitting transition for close-packed solids of these dots. Narrowband stimulated emission with a pronounced gain threshold at wavelengths tunable with the size of the nanocrystal was observed, as expected from quantum confinement effects. These results unambiguously demonstrate the feasibility of nanocrystal quantum dot lasers.
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It has already been demonstrated amplification and lasing using PbSe QDs, CdSe-ZnS, and CdS-CdSe-ZnS core-shell QDs dispersed in sol-gel films of TiO2 and ZrO2 planar waveguides.
“It has already been demonstrated amplification and lasing using PbSe QDs [32], CdSe-ZnS [33], and CdS-CdSe-ZnS [34] core-shell QDs dispersed in sol-gel films of TiO 2 and ZrO 2 planar waveguides.”
From Polymer/QDs Nanocomposites for Waveguiding Applications (2012) · cites this paper as [33]
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Jasieniak, J., Pacifico, J., Signorini, R., Chiasera, A., Ferrari, M., Martucci, A., & Mulvaney, P. (2007) · Advanced Functional Materials · doi:10.1002/adfm.200600955 · Cited by 79 · see citing works
Polymer/QDs Nanocomposites for Waveguiding Applications
Gordillo, H., Suárez, I., Abargues, R., Rodríguez-Cantó, P., Albert, S., & Martínez-Pastor, J. P. (2012) · Journal of Nanomaterials · doi:10.1155/2012/960201 · Cited by 49 · see citing works
“It has already been demonstrated amplification and lasing using PbSe QDs [32], CdSe-ZnS [33], and CdS-CdSe-ZnS [34] core-shell QDs dispersed in sol-gel films of TiO2 and ZrO2 planar waveguides.”
Method
- Authors
- Klimov, V. I., Mikhailovsky, A. A., Xu, S., Malko, A., Hollingsworth, J. A., Leatherdale, C. A., Eisler, H.-J., & Bawendi, M. G.
- Affiliations
- Los Alamos National Laboratory (US)
- Massachusetts Institute of Technology (US)
- Corresponding author
- Klimov, V. I.
- Bawendi, M. G.
- Venue
- Science
- Published
- 2000-10-13
- Volume
- 290
- Issue
- 5490
- Pages
- 314-317
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W1987763890
- Cited by
- 2,825
- References
- 0
- Citations by year
- 2026: 53 · 2025: 72 · 2024: 79 · 2023: 83 · 2022: 79 · 2021: 90 · 2020: 88 · 2019: 142 · 2018: 116 · 2017: 129 · 2016: 134 · 2015: 157 · 2014: 153 · 2013: 159 · 2012: 150
- FWCI
- 46.05
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Science (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Materials Science › Materials Chemistry › Quantum Dots Synthesis And Properties
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Semiconductor Quantum Structures and Devices
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Photonic Crystals and Applications
- Keywords
- nanocrystal quantum dots, optical gain, stimulated emission, quantum dot lasers, Auger recombination, nonradiative recombination, quantum confinement, size-tunable emission, threshold gain, semiconductor nanoparticles, optical amplification
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