Carrier Diffusion Effect in Gain Chip and 60 mW Tunable External Cavity Laser with Diffusion-Limited Gain Chip and Polymer-Based Waveguide Grating

In a tunable external cavity laser (T-ECL) module with a diffusion-reduced gain chip and a polymer waveguide grating, we have obtained Pout of 60 mW and 50 mW at 20 °C and 40 °C, respectively.