Title :
Ultrafast nonlinear optical processes and free-carrier lifetime in silicon nanowaveguides
Author :
Motamedi, Ali R. ; Nejadmalayeri, Amir H. ; Khilo, Anatol ; Kärtner, Franz X. ; Ippen, Erich P.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Massachusetts Inst. of Technol., Cambridge, MA, USA
Abstract :
We report self-consistent femtosecond studies of two-photon absorption, optical Kerr-effect and free-carrier index and loss in silicon nanowaveguides using heterodyne pump-probe. Free-carrier lifetime was reduced to 33ps with only 8dB/cm added loss using proton bombardment.
Keywords :
elemental semiconductors; high-speed optical techniques; nanophotonics; optical Kerr effect; optical losses; optical pumping; optical waveguides; silicon; two-photon processes; Si; free-carrier lifetime; heterodyne pump-probe; optical Kerr-effect; optical loss; proton bombardment; self-consistent femtosecond analysis; silicon nanowaveguides; two-photon absorption; ultrafast nonlinear optical processes; Optical mixing; Optical pumping; Optical refraction; Optical sensors; Optical variables control; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2011 Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4577-1223-4
