Title :
A direct band gap GeSn laser on Si
Author :
Geiger, R. ; Wirths, S. ; Buca, D. ; Sigg, H. ; von den Driesch, N. ; Ikonic, Z. ; Hartmann, J.M. ; Faist, J. ; Mantl, S. ; Grutzmacher, D.
Author_Institution :
Lab. for Micro- & Nanotechnol., Paul Scherrer Inst., Villigen, Switzerland
Abstract :
Temperature-dependent photoluminescence spectroscopy reveals that partially strain-relaxed Ge0.87Sn0.13 exhibits a fundamental direct band gap. For such an alloy, we show lasing at ≈ 2.3 μm emission wavelength under optical pumping up to 90 K.
Keywords :
germanium compounds; laser beams; optical pumping; photoluminescence; semiconductor lasers; silicon; GeSn-Si; direct band gap GeSn laser on Si; emission wavelength; fundamental direct band gap; optical pumping; partially strain-relaxed Ge0.87Sn0.13; temperature 90 K; temperature-dependent photoluminescence spectroscopy; wavelength 2.3 mum; Cavity resonators; Optical pumping; Optical waveguides; Photonic band gap; Tin;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2015 Conference on
Conference_Location :
San Jose, CA