Title :
Large transient optical gain from N+ Ge-on-Si
Author :
Wang, Xiaoxin ; Kimerling, Lionel C. ; Michel, Jurgen ; Liu, Jifeng
Author_Institution :
Thayer Sch. of Eng., Dartmouth Coll., Hanover, NH, USA
Abstract :
We report a large transient optical gain of ~1000 cm-1 from n+ Ge-on-Si at λ=1645 nm using femtosecond pump-probe spectroscopy. The gain spectrum width is 70 nm, from 1610 to 1680 nm.
Keywords :
elemental semiconductors; germanium; high-speed optical techniques; integrated optoelectronics; optical pumping; semiconductor lasers; Ge-Si; N+ Ge-on-Si; femtosecond pump-probe spectroscopy; gain spectrum width; transient optical gain; wavelength 1610 nm to 1680 nm; Optical films; Optical pulses; Optical pumping; Optical scattering; Photonics; Silicon; Ultrafast optics;
Conference_Titel :
Group IV Photonics (GFP), 2012 IEEE 9th International Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4577-0826-8
DOI :
10.1109/GROUP4.2012.6324175
