Ultra-narrow linewidth CW sub-THz generation using GS based OFCG and n-i-pn-i-p superlattice photomixers Articles uri icon

authors

  • CRIADO SERRANO, ANGEL RUBEN
  • DIOS FERNANDEZ, CRISTINA DE
  • DÖHLER, GOTTFRIED
  • Preu, S.
  • MALZER, STEFAN
  • Bauerschmidt, S.
  • Lu, H.
  • Gossard, A.C
  • ACEDO GALLARDO, PABLO

publication date

  • October 2012

start page

  • 1425

end page

  • 1426

issue

  • 22

volume

  • 48

International Standard Serial Number (ISSN)

  • 0013-5194

Electronic International Standard Serial Number (EISSN)

  • 1350-911X

abstract

  • A report is presented on the photonic synthesis of ultra-narrow line-width continuous-wave (CW) sub-THz signals using a gain-switching (GS) based optical frequency comb generator (OFCG), selective optical filtering and a n-i-pn-i-p superlattice photomixer. This setup provides continuous tunability with a tuning resolution in the range of 0.1 Hz at 120 GHz and full width at half maximum of the generated signals below the limits of the measurement setup (< 10 Hz). The advantages of this system make it a very good candidate for applications requiring extremely low phase noise and continuous tunability, such as high resolution spectroscopy in the sub-THz and THz range.

keywords

  • superlattices; optical tuning; terahertz wave generation; optical switches; optical filters