%0 Electronic Article %A E.J. Saarinen %A A. Rantamäki %A A. Chamorovskiy %A O.G. Okhotnikov %K power 1 W %K frequency 200 GHz %K time 830 fs %K power 900 mW %K passive harmonic mode locking %K laser cavity %K time 800 fs %K intracavity diamond heat spreader %K flip-chip semiconductor disc laser %K semiconductor saturable absorber mirror %K frequency 193 GHz %X Passive harmonic modelocking in a flip-chip semiconductor disc laser at a 193 GHz repetition rate with 900 mW of output power and a pulse duration of 830 fs is demonstrated. The high harmonic frequency is obtained via coupling of the laser cavity to an intracavity diamond heat spreader bonded to a semiconductor saturable absorber mirror. %@ 0013-5194 %T 200 GHz 1 W semiconductor disc laser emitting 800 fs pulses %B Electronics Letters %D October 2012 %V 48 %N 21 %P 1355-1357 %I Institution of Engineering and Technology %U https://digital-library.theiet.org/;jsessionid=c51e9mpfjg2fk.x-iet-live-01content/journals/10.1049/el.2012.2443 %G EN