Waveguide mode dynamics of blue laser diodes

Abstract

We use a scanning near-field microscope (SNOM) in combination with a time resolved detection scheme to measure the evolution of the near-field and far-field of InGaN laser diode (LD) waveguide modes. We observe lateral mode competition, filamentation, and beam steering. Here we compare the lateral mode dynamics for ridge waveguide LDs and oxide stripe LDs which are predominantly index and gain guided, respectively. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)