Accession Number : ADA131860

Title :   Semiconductors Investigated by Time Resolved Raman Absorption and Photoluminescence Spectroscopy Using Femtosecond and Picosecond Laser Techniques.

Descriptive Note : Final rept. 1 Dec 79-30 Nov 82,


Personal Author(s) : Alfano,Robert R ; Doukas,Apostolos G

PDF Url : ADA131860

Report Date : 05 May 1983

Pagination or Media Count : 71

Abstract : This report summarizes the research progress achieved in the period 1979-1982 in the research effort supported by AFOSR 80-0079. Two main areas of research are: picosecond and subpicosecond laser development and application and time-resolved studies of semiconductors. In the subpicosecond laser development program we investigated a variety of cavities of different physical parameters. A stable and reliable oscillator, which produces 200 fsec pulses, has been developed using a ring configuration. The first generation amplifier system has been completed with a gain of 10 to the sixth power. We have produce continuum by focusing the amplified pulses in a CC14 cell; and have invented a femtosecond luminescence technique (called population mixing) for probing semiconductor processes. (Author)

Descriptors :   *Raman spectra, *Photoluminescence, *Dye lasers, *Spectroscopy, Laser amplifiers, Interactions, Fluorescence, Laser cavities, Rings, Phonons, Glass, Electrons, Heat treatment, Time

Subject Categories : Lasers and Masers
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE