We have studied femtosecond pulse propagation in CdS quantum-dot-doped waveguides produced by the solgel and ion-exhange methods. The observed two-photon absorption and asymmetric spectral modulation of the transmitted pulses are explained by our theoretical model, which incorporates a near-resonant two-photon transition.
© 1996 Optical Society of America
Original Manuscript: October 3, 1995
Published: May 1, 1996
P. T. Guerreiro, S. I. Najafi, J. Mackenzie, N. Peyghambarian, S. G. Lee, A. S. Rodrigues, Y. Z. Hu, and E. M. Wright, "Femtosecond pulse propagation near a two-photon transition in a semiconductor quantum-dot waveguide," Opt. Lett. 21, 659-661 (1996)