Investigation on the origin of terahertz waves generated by dc-biased multimode semiconductor lasers at room temperature

Sylwester Latkowski, Frederic Surre, Ramon Maldonado-Basilio, Pascal Landais

Research output: Contribution to journalArticleAcademicpeer-review

18 Citations (Scopus)

Abstract

A technique to measure a terahertz wave generated by spectrum tailored Fabry-Pérot lasers (FP) is assessed. A dc-biased and 25 °C temperature controlled FP is probed by a continuous wave signal, tuned at 20 nm away from its lasing modes. With a 0.02 nm resolution optical spectrum analyzer (OSA), the terahertz generated signal frequency is measured from the interval between the probe and its side-band modulations. The terahertz waves emitted by these FPs are measured at 370±5 GHz and at 1.157±0.005 THz, respectively, within a precision set by our OSA. The origin of the terahertz wave is due to passive mode-locked through intracavity four-wave-mixing processes.
Original languageEnglish
Pages (from-to)241110
JournalApplied Physics Letters
Volume93
Issue number24
DOIs
Publication statusPublished - 1 Dec 2008
Externally publishedYes

Keywords

  • Radiowave and microwave technology
  • Semiconductor lasers
  • laser diodes
  • Modulation tuning and mode locking
  • Phase conjugation
  • photorefractive and Kerr effects

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