[15p-1D-1~11] Materials science of singularity in nitride semiconductors -Control and physics on surface and interface-

[15p-1D-6] Blue-violet femtosecond pulse generation using GaN-based semiconductor laser diode

〇Shunsuke Kono¹, Hideki Watanabe¹, Rintaro Koda¹, Noriyuki Fuutagawa¹, Hironobu Narui¹ (1.Sony)

Keywords:Nitride semiconductor,ultrashort optical pulses,mode locked lasers

We report blue-violet femtosecond pulse generation using a GaN-based semiconductor laser diode. The spectral bandwidth of a passively mode-locked GaN-based semiconductor laser diode was broadened using a dispersion-compensated external cavity. The output optical pulses from the mode-locked laser diode were compressed down to 140-fs duration optical pulses with 60-W peak power using a nonlinear pulse compressor with a spatial light modulator.