Accession Number:

ADA162303

Title:

Semiconductors Investigated by Picosecond Absorption, Fluorescence and Raman Time-Resolved Spectroscopy.

Descriptive Note:

Final rept. 1981-1984,

Corporate Author:

CITY COLL NEW YORK INST FOR ULTRAFAST SPECTROSCOPY AND LASERS

Report Date:

1984-11-30

Pagination or Media Count:

19.0

Abstract:

The main areas of research are development of picosecond and subpicosecond laser sources and the application of time-resolved spectroscopy to the study of semiconductors. In the subpicosecond laser development we have developed a stable and reliable laser system oscillator and amplifier. We have achieved over 95 conversion efficiency in ultrafast white light laser source. In addition, we have also achieved laser action in emerald. In the semiconductor research program, we have identified the deep native defects in undoped semi-insulating Cadmium Selenide and have studied the transient dynamics via deep defects and the enhancement of four-wave processes by deep trapping levels. We have studied the spontaneous and stimulated emission spectra and dynamic processes of Gallium Indium Phosphide and GaInP alloys, and characterized the exciton, bound magnetic polarons, and impurity fluorescence bands in alloys of Cadmium manganese Selenide. In addition, we have initiated a research program on the dynamic processes of quantum wells and superlattices.

Subject Categories:

  • Lasers and Masers
  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE