Title :
Resonant photoluminescence from Ge microdisks on Ge-on-insulator
Author :
Xuejun Xu ; Nishida, Keisuke ; Sawano, Kentarou ; Maruizumi, Takuya ; Shiraki, Yasuhiro
Author_Institution :
Adv. Res. Labs., Tokyo City Univ., Tokyo, Japan
Abstract :
Well-resolved resonant PL peaks were observed from microdisks fabricated on heavily n-doped GOI. FSR and Q-factor confirmed that these peaks corresponded to the WGMs of microdisk. Q-factors didn´t decrease against pump power, indicating the onset of population inversion. Our results show that GOI is a promising platform to realize lasers.
Keywords :
Q-factor; elemental semiconductors; germanium; integrated optics; micro-optomechanical devices; microcavities; microdisc lasers; micromechanical resonators; optical pumping; photoluminescence; population inversion; whispering gallery modes; Ge-Si; Ge-SiO2; Q-factor; Si; free-spectrum range; microdisk resonators; population inversion; pump power; tensile-strained heavily n-doped Ge-on-insulator; well-resolved resonant photoluminescence; whispering gallery modes; Absorption; Integrated optics; Optical device fabrication; Optical resonators; Q-factor; Silicon; Substrates;
Conference_Titel :
Silicon-Germanium Technology and Device Meeting (ISTDM), 2014 7th International
Conference_Location :
Singapore
Print_ISBN :
978-1-4799-5427-8
DOI :
10.1109/ISTDM.2014.6874670
