Generation and detection of high-speed pulses of mid-infrared radiation with intersubband semiconductor lasers and detectors

Roberto Paiella, Federico Capasso, Claire Gmachl, Clyde G. Bethea, Deborah L. Sivco, James N. Baillargeon, Albert L. Hutchinson, Alfred Y. Cho, H. C. Liu

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

Semiconductor lasers and detectors based on intersubband electron transitions are used to generate and measure high-speed pulses of mid-infrared radiation. In particular, we use a commercial comb generator to gain-switch a state-of-the-art 8-μm quantum cascade laser mounted in a high-speed package. The output pulses of this device are then detected with a small-area quantum-well infrared photodetector, also packaged for high-speed operation. Pulse widths shorter than 90 ps are directly measured with this system. Accounting for the finite response time of the detection electronics, a deconvolved duration of approximately 45 ps is extrapolated.

Original languageEnglish (US)
Pages (from-to)780-782
Number of pages3
JournalIEEE Photonics Technology Letters
Volume12
Issue number7
DOIs
StatePublished - Jul 1 2000
Externally publishedYes

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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