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Proceedings Paper

Ultrafast optical processes in mercuric iodide
Author(s): Leah R. Williams; Richard J. M. Anderson
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Paper Abstract

Subpicosecond time-resolved transient grating and transient absorption experiments were performed in mercuric iodide, a wide bandgap semiconductor. Sub-bandgap excitation in the Urbach tail induces an index grating which forms in about 2 ps and which exhibits biexponential decay with time constants 60 ps and 1 .5ns. We ascribe this change in the index of refraction to the formation of defect states. In addition, coherent Raman excitation of the 1 14 cm1 Aig lattice mode was observed.

Paper Details

Date Published: 1 April 1990
PDF: 7 pages
Proc. SPIE 1209, Picosecond and Femtosecond Spectroscopy from Laboratory to Real World, (1 April 1990); doi: 10.1117/12.17905
Show Author Affiliations
Leah R. Williams, Sandia National Labs. (United States)
Richard J. M. Anderson, Sandia National Labs. (United States)

Published in SPIE Proceedings Vol. 1209:
Picosecond and Femtosecond Spectroscopy from Laboratory to Real World
Keith A. Nelson, Editor(s)

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