Nanopillar quantum well lasers directly grown on silicon and emitting at silicon-transparent wavelengths

FANGLU LU, INDRASEN BHATTACHARYA, HAO SUN, THAI-TRUONG D. TRAN, KAR WEI NG, GILLIARD N. MALHEIROS-SILVEIRA, AND CONNIE CHANG-HASNAIN* Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley, California 94720, USA Applied Science and Technology Group, University of California at Berkeley, Berkeley, California 94720, USA Department of Electronic Engineering, Tsinghua University, Beijing 100084, China Tsinghua Berkeley Shenzhen Institute, University of California at Berkeley, Berkeley, California 94720, USA *Corresponding author: [email protected]