Frequency-comb-assisted broadband precision spectroscopy with cascaded diode lasers

Junqiu Liu, Victor Brasch, Martin H. P. Pfeiffer, Arne Kordts, Ayman Nassar Kamel, Hairun Guo, Michael Geiselmann, Tobias J. Kippenberg

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Abstract

Frequency-comb-assisted diode laser spectroscopy, employing both the accuracy of an optical frequency comb and the broad wavelength tuning range of a tunable diode laser, has been widely used in many applications. In this Letter, we present a novel method using cascaded frequency agile diode lasers, which allows us to extend the measurement bandwidth to 37.4 THz (1355-1630 nm) at megahertz resolution with scanning speeds above 1 THz/s. It is demonstrated as a useful tool to characterize a broadband spectrum for molecular spectroscopy, and in particular it enables us to characterize the dispersion of integrated microresonators up to the 4th-order. (C) 2016 Optical Society of America
Original languageEnglish
JournalOptics Letters
Volume41
Issue number13
Pages (from-to)3134-3137
ISSN0146-9592
DOIs
Publication statusPublished - 2016

Keywords

  • physics.optics
  • Atomic and Molecular Physics, and Optics
  • Diodes
  • Laser spectroscopy
  • Molecular spectroscopy
  • Broad-band spectrum
  • Frequency agile
  • Frequency combs
  • Micro resonators
  • Optical frequency combs
  • Precision spectroscopy
  • Tunable diode lasers
  • Wavelength-tuning range
  • Semiconductor lasers
  • OPTICS
  • SILICON-NITRIDE
  • DISPERSION
  • MICRORESONATOR
  • RESONATOR
  • RADIATION
  • DISTANCE
  • SYSTEM
  • CHIP

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