Near two-photon resonance femtosecond pulse propagation in a CdS quantum dot waveguide

P. T. Guerreiro, S. G. Lee, A. S. Rodrigues, Y. Z. Hu, E. M. Wright, S. I. Najafi, Y. H. Kao, J. Mackenzie, N. Peyghambarian

Research output: Contribution to conferencePaper

Abstract

The authors performed pulse propagation experiments in cadmium sulfide (CdS) QD doped glass waveguides using a femtosecond laser system tuned near a two-photon resonance while being well below the lowest one-photon transitions. The samples were single-mode waveguides of CdS-doped borosilicate sol-gel glass, and were prepared with a CdS concentration of 6.2 wt%. The waveguides were fabricated by potassium-sodium ion exchange through 3-mm openings in an aluminum mask. The radius of the dots was determined as R = (1.5 ± 0.45) nm, the mean radius being half a Bohr radius, and the linear absorption spectrum showed the lowest one-photon transition as a shoulder appearing at 460 nm.

Original languageEnglish (US)
Pages22-23
Number of pages2
StatePublished - Jan 1 1996
EventProceedings of the 1996 6th Quantum Electronics and Laser Science Conference, QELS - Anaheim, CA, USA
Duration: Jun 2 1996Jun 7 1996

Other

OtherProceedings of the 1996 6th Quantum Electronics and Laser Science Conference, QELS
CityAnaheim, CA, USA
Period6/2/966/7/96

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Guerreiro, P. T., Lee, S. G., Rodrigues, A. S., Hu, Y. Z., Wright, E. M., Najafi, S. I., Kao, Y. H., Mackenzie, J., & Peyghambarian, N. (1996). Near two-photon resonance femtosecond pulse propagation in a CdS quantum dot waveguide. 22-23. Paper presented at Proceedings of the 1996 6th Quantum Electronics and Laser Science Conference, QELS, Anaheim, CA, USA, .