Abstract

Using a superluminescent diode, we observed femtosecond accumulated photon echoes in 1, 1′-diethyl-4, 4′-quinodicarbocyanine iodide embedded in polyvinyl acetate. The output of the superluminescent diode directly excited the sample to produce photon echoes. By using a simple experimental system we obtained a temporal resolution as high as 100 fsec. This resolution is determined by the spectral width of the superluminescent diode and the noncollinear excitation beam configuration of the system.

© 1991 Optical Society of America

Subpicosecond accumulated photon echoes using a continuous-wave multimode diode laser

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