Self-oscillation and period adding from resonant tunnelling diode-laser diode circuit Figueiredo, J. M. L. ; Romeira, B. ; Slight, T. J. ; Wang, L. ; Wasige, E. ; Ironside, C. N. Abstract Publication: Electronics Letters Pub Date: 2008 DOI: 10.1049/el:20080350 Bibcode: 2008ElL....44..876F