Carrier Diffusion Effect in Gain Chip and 60 mW Tunable External Cavity Laser with Diffusion-Limited Gain Chip and Polymer-Based Waveguide Grating. - Dong Churl Kim; Young-Tak Han; Donghoon Lee 008; Seok-Tae Kim; Su Jeong Jeon; Sangho Park; Jang-Uk Shin; Yong-Hwan Kwon; Jong-Hoi Kim; Yongsoon Baek; Ho-Sung Cho (OFC, 2019)