Title :
Grating-coupled strain-enhanced light emission from mechanically stressed germanium nanomembranes
Author :
Boztug, C. ; Perez, J. R. Sanchez ; Yin, Jianwei ; Sudradjat, F.F. ; Paskiewicz, D.M. ; Jacobson, R.B. ; Lagally, M.G. ; Paiella, R.
Author_Institution :
Dept. of Electr. & Comput. Eng. & Photonics Center, Boston Univ., Boston, MA, USA
Abstract :
Direct-bandgap light emission from Ge nanomembranes is strongly enhanced and red-shifted through the application of tensile strain, combined with the use of a periodic array of amorphous-Si nanopillars to outcouple the strain-enhanced luminescence.
Keywords :
amorphous semiconductors; diffraction gratings; elemental semiconductors; germanium; nanophotonics; nanostructured materials; optical arrays; photoluminescence; red shift; silicon; Si-Ge; amorphous-Si nanopillars; direct-bandgap light emission; grating-coupled strain-enhanced light emission; mechanically stressed germanium nanomembranes; periodic array; red-shift; strain-enhanced luminescence; tensile strain; Arrays; Gratings; Photonic band gap; Photonics; Tensile strain; Wavelength measurement;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2013 Conference on
Conference_Location :
San Jose, CA
