Blue 6-ps short-pulse generation in gain-switched InGaN vertical-cavity surface-emitting lasers via impulsive optical pumping

Shaoqiang Chen, Makoto Okano, Baoping Zhang, Masahiro Yoshita, Hidefumi Akiyama, Yoshihiko Kanemitsu

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We report the demonstration of the picosecond-pulse lasing in blue region from an optically pumped gain-switched InGaN vertical-cavity-surface-emitting laser (VCSEL). Through 150-fs optical pulse excitations at room temperature, multimode pulse lasing with a main mode at 436.5 nm from the InGaN VCSEL was observed. The output pulse widths were measured to be as short as 9.8 ps for the total lasing spectra and 6.0 ps for the main mode. Since the obtained short pulses were still not limited by its photon lifetime of 0.7 ps or band-width of 0.8 nm, possible ways to generate even shorter pulses have been examined.

Original languageEnglish
Article number191108
JournalApplied Physics Letters
Issue number19
Publication statusPublished - 2012 Nov 5
Externally publishedYes


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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