Optical gain and lasing in colloidal quantum dots

Victor I Klimov, J. A. Hollingsworth, A. A. Mikhailovsky, A. Malko, S. Xu, C. A. Leatherdale, H. J. Eisler, M. G. Bawendi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Summary form only given. Semiconductor quantum dots (QDs) promise the lowest lasing threshold for semiconductor media. Additionally, QDs in the strong confinement regime have an emission wavelength that is a pronounced function of size, adding the advantage of continuous spectral tunability simply by changing the dot radius. Lasing has previously been demonstrated for epitaxially grown III-V QDs. Large lateral dimensions and difficulties in size control limit their spectral tunability using quantum confinement effects. An alternative approach to fabricating QDs is through chemical synthesis which can produce semiconductor nanoparticles (colloidal QDs) with radii from 1 to 6 nm and with size dispersions as small as 5%. Such dots show strong quantum confinement and permit size-controlled spectral tunability over an energy range as wide as 1 eV. The combination of tunable electronic energies and chemical flexibility make colloidal QDs ideal building blocks for the bottom-up assembly of optical device structures, including optical amplifiers and lasers. However, despite more than a decade of effort, lasing in small-size colloidal nanoparticles has not been realized. To determine what hinders lasing action, we performed extensive dynamical studies of radiative and nonradiative processes in CdSe colloidal QDs.

Original languageEnglish
Title of host publicationTechnical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages4-5
Number of pages2
ISBN (Print)155752663X, 9781557526632
DOIs
Publication statusPublished - 2001
EventQuantum Electronics and Laser Science Conference, QELS 2001 - Baltimore, United States
Duration: May 6 2001May 11 2001

Other

OtherQuantum Electronics and Laser Science Conference, QELS 2001
CountryUnited States
CityBaltimore
Period5/6/015/11/01

Fingerprint

Optical gain
Semiconductor quantum dots
lasing
quantum dots
Quantum confinement
Semiconductor materials
Nanoparticles
Plasma confinement
nanoparticles
radii
Light amplifiers
Optical devices
Dispersions
light amplifiers
flexibility
assembly
Wavelength
thresholds
energy
Lasers

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Radiation

Cite this

Klimov, V. I., Hollingsworth, J. A., Mikhailovsky, A. A., Malko, A., Xu, S., Leatherdale, C. A., ... Bawendi, M. G. (2001). Optical gain and lasing in colloidal quantum dots. In Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001 (pp. 4-5). [961772] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/QELS.2001.961772

Optical gain and lasing in colloidal quantum dots. / Klimov, Victor I; Hollingsworth, J. A.; Mikhailovsky, A. A.; Malko, A.; Xu, S.; Leatherdale, C. A.; Eisler, H. J.; Bawendi, M. G.

Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001. Institute of Electrical and Electronics Engineers Inc., 2001. p. 4-5 961772.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Klimov, VI, Hollingsworth, JA, Mikhailovsky, AA, Malko, A, Xu, S, Leatherdale, CA, Eisler, HJ & Bawendi, MG 2001, Optical gain and lasing in colloidal quantum dots. in Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001., 961772, Institute of Electrical and Electronics Engineers Inc., pp. 4-5, Quantum Electronics and Laser Science Conference, QELS 2001, Baltimore, United States, 5/6/01. https://doi.org/10.1109/QELS.2001.961772
Klimov VI, Hollingsworth JA, Mikhailovsky AA, Malko A, Xu S, Leatherdale CA et al. Optical gain and lasing in colloidal quantum dots. In Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001. Institute of Electrical and Electronics Engineers Inc. 2001. p. 4-5. 961772 https://doi.org/10.1109/QELS.2001.961772
Klimov, Victor I ; Hollingsworth, J. A. ; Mikhailovsky, A. A. ; Malko, A. ; Xu, S. ; Leatherdale, C. A. ; Eisler, H. J. ; Bawendi, M. G. / Optical gain and lasing in colloidal quantum dots. Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001. Institute of Electrical and Electronics Engineers Inc., 2001. pp. 4-5
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AB - Summary form only given. Semiconductor quantum dots (QDs) promise the lowest lasing threshold for semiconductor media. Additionally, QDs in the strong confinement regime have an emission wavelength that is a pronounced function of size, adding the advantage of continuous spectral tunability simply by changing the dot radius. Lasing has previously been demonstrated for epitaxially grown III-V QDs. Large lateral dimensions and difficulties in size control limit their spectral tunability using quantum confinement effects. An alternative approach to fabricating QDs is through chemical synthesis which can produce semiconductor nanoparticles (colloidal QDs) with radii from 1 to 6 nm and with size dispersions as small as 5%. Such dots show strong quantum confinement and permit size-controlled spectral tunability over an energy range as wide as 1 eV. The combination of tunable electronic energies and chemical flexibility make colloidal QDs ideal building blocks for the bottom-up assembly of optical device structures, including optical amplifiers and lasers. However, despite more than a decade of effort, lasing in small-size colloidal nanoparticles has not been realized. To determine what hinders lasing action, we performed extensive dynamical studies of radiative and nonradiative processes in CdSe colloidal QDs.

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