Ultrafast electrooptic dual-comb interferometry
Journal article, 2015

Dual-comb interferometry is a particularly compelling technique that relies on the phase coherence of two laser frequency combs for measuring broadband complex spectra. This method is rapidly advancing the field of optical spectroscopy and empowering new applications, from nonlinear microscopy to laser ranging. Up to now, most dual-comb interferometers were based on modelocked lasers, whose repetition rates have restricted the measurement speed to ~kHz. Here we demonstrate a dual-comb interferometer that is based on electrooptic frequency combs and measures consecutive complex spectra at an ultra-high refresh rate of 25 MHz. These results pave the way for novel scientific and metrology applications of frequency comb generators beyond the realm of molecular spectroscopy, where the measurement of ultrabroadband waveforms is of paramount relevance.

Ultrafast measurements



Fiber optics and optical communications


Vicente Andrés Durán Bosch

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

S. Tainta

Universidad Publica de Navarra

Victor Torres Company

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Optics Express

1094-4087 (ISSN)

Vol. 23 23 30557-30569

Subject Categories

Physical Sciences

Atom and Molecular Physics and Optics


Basic sciences



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