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Optics Letters

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  • Vol. 30, Iss. 2 — Jan. 15, 2005
  • pp: 171–173

Room-temperature amplified spontaneous emission at 1300 nm in solution-processed PbS quantum-dot films

V. Sukhovatkin, S. Musikhin, I. Gorelikov, S. Cauchi, L. Bakueva, E. Kumacheva, and E. H. Sargent  »View Author Affiliations


Optics Letters, Vol. 30, Issue 2, pp. 171-173 (2005)
http://dx.doi.org/10.1364/OL.30.000171


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Abstract

We report room-temperature amplified spontaneous emission and spectral narrowing at infrared wavelengths in solution-processed films made up of PbS quantum-dot nanocrystals. The results are relevant to optical amplification and lasing integrated upon a variety of substrates. The active optical medium operates at room temperature without any additional matrix material, providing an optical gain of 260 cm^-1 and a pump threshold of 1 mJ/cm^-2. Nanocrystals synthesized in an aqueous solution and stabilized by use of short ligands result in high quantum-dot volume fractions in solid films and in a redshift emission relative to absorption.

© 2005 Optical Society of America

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(250.0250) Optoelectronics : Optoelectronics
(250.4480) Optoelectronics : Optical amplifiers

Citation
V. Sukhovatkin, S. Musikhin, I. Gorelikov, S. Cauchi, L. Bakueva, E. Kumacheva, and E. H. Sargent, "Room-temperature amplified spontaneous emission at 1300 nm in solution-processed PbS quantum-dot films," Opt. Lett. 30, 171-173 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-2-171


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References

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