Chirp and linewidth enhancement factor of tunable, optically-pumped long wavelength VCSEL
19 February 2004
Small-signal frequency modulation response and chirp characteristics of a tunable, optically-pumped 1.6 mum vertical cavity surface emitting laser (VCSEL) based on microelectromechanical at wavelength tuning are presented for the first time. From the measurements the linewidth enhancement factor alpha(H) has been derived and is discussed.