Plasma heating and ultrafast semiconductor laser modulation through a terahertz heating field

Jianzhong Li, C. Z. Ning

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Electron-hole plasma heating and ultrafast modulation in a semiconductor laser under a terahertz electrical field are investigated using a set of hydrodynamic equations derived from the semiconductor Bloch equations. The self-consistent treatment of lasing and heating processes leads to the prediction of a strong saturation and degradation of modulation depth even at moderate terahertz field intensity. This saturation places a severe limit to bandwidth achievable with such scheme in ultrafast modulation. Strategies for increasing modulation depth are discussed.

Original languageEnglish (US)
Pages (from-to)4933-4940
Number of pages8
JournalJournal of Applied Physics
Issue number9
StatePublished - Nov 1 2000


ASJC Scopus subject areas

  • Physics and Astronomy(all)

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