Abstract

We present the operation of an optical device that exhibits diodelike properties based on two adjacent layers of quantum dots (QDs) encased in a fiber-optic jacket. The possibility of a multilayered device is also discussed. A significant change in the emission spectrum of CdSeZnS core-shell QDs was observed when excited by the input laser and the fluorescence of other CdSeZnS core-shell QDs. The output of the diode can be taken to be either the incoming laser wavelength of light similar to a conventional diode, or the output may be considered to be one of the QD fluorescence wavelengths. Current work has applications in biological fluorescence monitors and sensors as well as in telecommunications applications.

© 2006 Optical Society of America

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References

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  1. Evident Technologies Inc., "EviDot Quantum Dots Specification Sheet," http://www.evidenttech.com/pdf/specSheets/quantum-dot-spec-sheet.pdf.
  2. J. Raynolds and M. LoCascio, "Semiconductor nanocrystal based saturable absorbers for optical switching applications," http://www.evidenttech.com/pdf/whitePapers/satAbsorbSwitching.pdf.
  3. H. Du, C. Chen, R. Krishnan, T. Krauss, J. M. Harbold, F. W. Wise, M. G. Thomas, and J. Silcox, Nano Lett. 2, 1321 (2002).
    [CrossRef]
  4. D. Alexander, J. Deogun, H. Hamza, J. Bruce III, C. Zuhlke, B. Koch, and P. Le, in Proceedings of the 18th Annual Meeting of the IEEE Laser and Electro-Optics Society (LEOS) (IEEE, 2005), pp. 109-110.

2002 (1)

H. Du, C. Chen, R. Krishnan, T. Krauss, J. M. Harbold, F. W. Wise, M. G. Thomas, and J. Silcox, Nano Lett. 2, 1321 (2002).
[CrossRef]

Alexander, D.

D. Alexander, J. Deogun, H. Hamza, J. Bruce III, C. Zuhlke, B. Koch, and P. Le, in Proceedings of the 18th Annual Meeting of the IEEE Laser and Electro-Optics Society (LEOS) (IEEE, 2005), pp. 109-110.

Bruce, J.

D. Alexander, J. Deogun, H. Hamza, J. Bruce III, C. Zuhlke, B. Koch, and P. Le, in Proceedings of the 18th Annual Meeting of the IEEE Laser and Electro-Optics Society (LEOS) (IEEE, 2005), pp. 109-110.

Chen, C.

H. Du, C. Chen, R. Krishnan, T. Krauss, J. M. Harbold, F. W. Wise, M. G. Thomas, and J. Silcox, Nano Lett. 2, 1321 (2002).
[CrossRef]

Deogun, J.

D. Alexander, J. Deogun, H. Hamza, J. Bruce III, C. Zuhlke, B. Koch, and P. Le, in Proceedings of the 18th Annual Meeting of the IEEE Laser and Electro-Optics Society (LEOS) (IEEE, 2005), pp. 109-110.

Du, H.

H. Du, C. Chen, R. Krishnan, T. Krauss, J. M. Harbold, F. W. Wise, M. G. Thomas, and J. Silcox, Nano Lett. 2, 1321 (2002).
[CrossRef]

Hamza, H.

D. Alexander, J. Deogun, H. Hamza, J. Bruce III, C. Zuhlke, B. Koch, and P. Le, in Proceedings of the 18th Annual Meeting of the IEEE Laser and Electro-Optics Society (LEOS) (IEEE, 2005), pp. 109-110.

Harbold, J. M.

H. Du, C. Chen, R. Krishnan, T. Krauss, J. M. Harbold, F. W. Wise, M. G. Thomas, and J. Silcox, Nano Lett. 2, 1321 (2002).
[CrossRef]

Koch, B.

D. Alexander, J. Deogun, H. Hamza, J. Bruce III, C. Zuhlke, B. Koch, and P. Le, in Proceedings of the 18th Annual Meeting of the IEEE Laser and Electro-Optics Society (LEOS) (IEEE, 2005), pp. 109-110.

Krauss, T.

H. Du, C. Chen, R. Krishnan, T. Krauss, J. M. Harbold, F. W. Wise, M. G. Thomas, and J. Silcox, Nano Lett. 2, 1321 (2002).
[CrossRef]

Krishnan, R.

H. Du, C. Chen, R. Krishnan, T. Krauss, J. M. Harbold, F. W. Wise, M. G. Thomas, and J. Silcox, Nano Lett. 2, 1321 (2002).
[CrossRef]

Le, P.

D. Alexander, J. Deogun, H. Hamza, J. Bruce III, C. Zuhlke, B. Koch, and P. Le, in Proceedings of the 18th Annual Meeting of the IEEE Laser and Electro-Optics Society (LEOS) (IEEE, 2005), pp. 109-110.

LoCascio, M.

J. Raynolds and M. LoCascio, "Semiconductor nanocrystal based saturable absorbers for optical switching applications," http://www.evidenttech.com/pdf/whitePapers/satAbsorbSwitching.pdf.

Raynolds, J.

J. Raynolds and M. LoCascio, "Semiconductor nanocrystal based saturable absorbers for optical switching applications," http://www.evidenttech.com/pdf/whitePapers/satAbsorbSwitching.pdf.

Silcox, J.

H. Du, C. Chen, R. Krishnan, T. Krauss, J. M. Harbold, F. W. Wise, M. G. Thomas, and J. Silcox, Nano Lett. 2, 1321 (2002).
[CrossRef]

Thomas, M. G.

H. Du, C. Chen, R. Krishnan, T. Krauss, J. M. Harbold, F. W. Wise, M. G. Thomas, and J. Silcox, Nano Lett. 2, 1321 (2002).
[CrossRef]

Wise, F. W.

H. Du, C. Chen, R. Krishnan, T. Krauss, J. M. Harbold, F. W. Wise, M. G. Thomas, and J. Silcox, Nano Lett. 2, 1321 (2002).
[CrossRef]

Zuhlke, C.

D. Alexander, J. Deogun, H. Hamza, J. Bruce III, C. Zuhlke, B. Koch, and P. Le, in Proceedings of the 18th Annual Meeting of the IEEE Laser and Electro-Optics Society (LEOS) (IEEE, 2005), pp. 109-110.

Nano Lett. (1)

H. Du, C. Chen, R. Krishnan, T. Krauss, J. M. Harbold, F. W. Wise, M. G. Thomas, and J. Silcox, Nano Lett. 2, 1321 (2002).
[CrossRef]

Other (3)

D. Alexander, J. Deogun, H. Hamza, J. Bruce III, C. Zuhlke, B. Koch, and P. Le, in Proceedings of the 18th Annual Meeting of the IEEE Laser and Electro-Optics Society (LEOS) (IEEE, 2005), pp. 109-110.

Evident Technologies Inc., "EviDot Quantum Dots Specification Sheet," http://www.evidenttech.com/pdf/specSheets/quantum-dot-spec-sheet.pdf.

J. Raynolds and M. LoCascio, "Semiconductor nanocrystal based saturable absorbers for optical switching applications," http://www.evidenttech.com/pdf/whitePapers/satAbsorbSwitching.pdf.

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Figures (3)

Fig. 1
Fig. 1

(a) Splice used in the experiment with unequal amounts of particle types. (b) Splice used in the experiment with equal amounts of particle types.

Fig. 2
Fig. 2

(a) Output spectrum when pump light is incident on the green layer first, and the green layer is twice as thick as the red layer. (b) Output spectrum when pump light is incident on the red layer first, and the green layer is twice as thick as the red layer.

Fig. 3
Fig. 3

(a) Output spectrum when pump light is incident on the green layer first with matching layer thickness. (b) Output spectrum when pump light is incident on the red layer first with matching layer thickness.

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