Accession Number : ADA323323
Title : (DEPSCOR-92) Ultrafast Pulsed Applications to Photonic Device Materials and MBE Growth Research.
Descriptive Note : Final rept. 30 Sep 93-31 Dec 96,
Corporate Author : OKLAHOMA STATE UNIV STILLWATER DEPT OF PHYSICS
Personal Author(s) : Song, Jin-Joo
PDF Url : ADA323323
Report Date : DEC 1996
Pagination or Media Count : 62
Abstract : The research performed centered around the establishment of state of the art time domain spectroscopy capabilities. This included the upgrade of a femtosecond Ti: sapphire with second harmonic generation to less than 350 nm for studying wide bandgap III-N semiconductors in the ultraviolet spectral range. Probing of the optical properties of III-N structures proceeded, resulting in a significant initial data base for this new material system. In addition, femtosecond four wave mixing signals were observed for the first time in GaN, leading to an understanding of phonon-exciton interactions leading to exciton line broadening. This work led to collaborations with a large group of researchers in the III-N community, and became the basis for expanded funding.
Descriptors : *PULSED LASERS, *SAPPHIRE, OPTICAL PROPERTIES, SECOND HARMONIC GENERATION, PHOTONICS, LASER APPLICATIONS, TITANIUM, DOPING, N TYPE SEMICONDUCTORS, GALLIUM COMPOUNDS, ULTRAVIOLET SPECTRA.
Subject Categories : Lasers and Masers
Distribution Statement : APPROVED FOR PUBLIC RELEASE