Electrically pumped distributed feedback nitridelasers employing embeddeddielectric gratings

Abstract
Pulsed operation of distributed feedback lasers has been demonstrated in the (Al,Ga,In)N material system using epitaxial lateral overgrowth. The devices were formed by overgrowing a third-order silicon nitride grating located beneath the active region. A narrow spectral linewidth of 0.1 nm was observed above threshold with an emission wavelength of 413.5 nm.