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