Temporal wavelength multiplexing of quantum cascade laser

F. Toor, D. L. Sivco, Claire F. Gmachl

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


A quantum cascade (QC) laser is presented that is both temporally and wavelength multiplexed, i.e. it emits two widely different wavelengths at two alternate time slots. A bidirectional and multi-wavelength QC laser source that emits at 10.8m wavelength for a positive polarity current and 8.6m for a negative polarity current was used. A diode based adder circuit was designed to drive the QC laser such that it added two opposite polarity current pulses with a variable time delay. Application of two polarity 100ns pulse width current pulses at 80kHz with time delays of 0.5 to 2.5s resulted in a versatile time and wavelength multiplexed QC laser.

Original languageEnglish (US)
Pages (from-to)357-359
Number of pages3
JournalElectronics Letters
Issue number7
StatePublished - 2009

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering


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