Dynamics of short-pulse generation via spectral filtering from intensely excited gain-switched 1.55-μm distributed-feedback laser diodes

Shaoqiang Chen, Masahiro Yoshita, Aya Sato, Takashi Ito, Hidefumi Akiyama, Hiroyuki Yokoyama

研究成果: Article査読

14 被引用数 (Scopus)

抄録

Picosecond-pulse-generation dynamics and pulse-width limiting factors via spectral filtering from intensely pulse-excited gain-switched 1.55-μm distributed-feedback laser diodes were studied. The spectral and temporal characteristics of the spectrally filtered pulses indicated that the short-wavelength component stems from the initial part of the gain-switched main pulse and has a nearly linear down-chirp of 5.2 ps/nm, whereas long-wavelength components include chirped pulse-lasing components and steady-state-lasing components. Rate-equation calculations with a model of linear change in refractive index with carrier density explained the major features of the experimental results. The analysis of the expected pulse widths with optimum spectral widths was also consistent with the experimental data.

本文言語English
ページ(範囲)10597-10605
ページ数9
ジャーナルOptics Express
21
9
DOI
出版ステータスPublished - 2013 5 6

ASJC Scopus subject areas

  • 原子分子物理学および光学

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