Electrically Gain-Switched Vertical-Cavity Surface-Emitting Lasers

G. Hasnain, J. D. Wynn, A. Y. Cho, J. M. Wiesenfeld, T. C. Damen, J. Shah, Y. H. Wang

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20 Citations (Scopus)

Abstract

We report electrical gain-switching of a packaged vertical-cavity surface-emitting laser (VCSEL). Pulse durations as short as 24 ps at repetition rates up to 2 GHz were obtained from a four quantum well GaAs/AlGaAs VCSEL, which emits 0.8 mW continuous wave power in a single mode at room temperature and has a current threshold of 6 mA. Simultaneous measurement of the optical spectrum showed an almost transform limited line-width indicating ultralow chirp. Optical pumping with subpicosecond pulses of the same packaged devices, held at a constant electrical bias, yielded 22 ps pulses, in good agreement with the electrical pumping. Simple calculations show that the pulse duration obtained by gain-switching is limited by the design constraints necessary to operate the VCSEL continuous wave at room temperature with low-threshold current, high-quantum efficiency, and reasonable output power.

Original languageEnglish
Pages (from-to)6-9
Number of pages4
JournalIEEE Photonics Technology Letters
Volume4
Issue number1
DOIs
Publication statusPublished - 1992 Jan

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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    Hasnain, G., Wynn, J. D., Cho, A. Y., Wiesenfeld, J. M., Damen, T. C., Shah, J., & Wang, Y. H. (1992). Electrically Gain-Switched Vertical-Cavity Surface-Emitting Lasers. IEEE Photonics Technology Letters, 4(1), 6-9. https://doi.org/10.1109/68.124857