High power and narrow lateral far field divergence 1.5 /spl mu/m-eye-safe pulse laser diodes with flared waveguide

摘要

We fabricated high power and narrow far-field angle, 1.5 /spl mu/m eye-safe pulsed lasers with a flared ridge waveguide. High power (9.6 W) with narrow lateral far field divergence (3-4/spl deg/), have been obtained. These devices will be applicable for free-space optical measurement systems as "eye-safe" light sources. Additionally, by decreasing perpendicular far field divergence, it is easy to collimate the output beam.