TITLE

Many-body optical gain of (101¯0) wurtzite GaN/AlGaN quantum-well lasers

AUTHOR(S)
Park, Seoung-Hwan; Seoung-Hwan Park
PUB. DATE
December 2000
SOURCE
Applied Physics Letters;12/18/2000, Vol. 77 Issue 25
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Optical properties of (101¯0)-oriented wurtzite (WZ) GaN/AlGaN quantum well (QW) lasers are investigated by the non-Markovian gain model with many-body effects. These results are compared with those of (0001)-oriented WZ GaN/AlGaN QW with spontaneous and piezoelectric polarization taken into account. The energy pattern of the (101¯0) orientation shows two-fold symmetry while the energy pattern of the (0001) orientation is completely isotropic. It is found that the many-body effects are more dominant in the (0001)-oriented QW compared to the (101¯0)-oriented QW. This is because the average hole effective mass of the (0001)-oriented QW is larger than that of the (101¯0)-oriented QW. Thus, the flatband model shows that the optical gain of the (101¯0)-oriented QW is smaller than that of the (0001)-oriented QW. However, with the inclusion of the internal fields, it is observed that the optical gain of the (0001)-oriented QW is significantly smaller than that of the (101¯0)-oriented QW. © 2000 American Institute of Physics.
ACCESSION #
4414250

 

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics