Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/4500

Download PDF (Published version) (Adobe Acrobat PDF, -1 bytes)

Title

Femtosecond three-pulse photon echo and transient grating studies of the yellow band of GaN

Author(s)

Dao, Lap Van;  Hannaford, Peter;  Lowe, Martin

Abstract

Using femtosecond three-pulse two-colour photon echo measurements we study the optical nonlinearity induced by pump and probe in the short time scale (< 500 fs) where the free induction decay and photon echo are the main contribution to observed signal and in a long time scale (up to 20 ps) in the trace of the population grating. The variation of the pump and probe wavelength and use of spectrally resolved measurements allows us to study the origin of the yellow band and the phase and energy relaxation properties of this band. The results suggest that the light emission in the yellow band is the recombination between shallow donors and deep acceptors and the carriers trapping time is very short.

Publication type

Conference paper

Research centre

Swinburne University of Technology. Centre for Atom Optics and Ultrafast Spectroscopy

Source

Proceedings Conference on Optoelectronic and Microelectronic Materials and Devices/COMMAD 2002, Sydney, N.S.W., 11-13 December 2002, pp. 289-292

Publication year

2002

Keyword(s)

Optical communications

Publisher

Institute of Electrical and Electronics Engineers

ISSN

1097-2137

Publisher URL

http://dx.doi.org/10.1109/COMMAD.2002.1237248

Copyright

Copyright © 2002 IEEE. Published version of the paper reproduced here in accordance with the copyright policy of the publisher. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

Full text

Peer reviewed