Electro-optic dual-comb interferometry over 40-nm bandwidth
arXiv:1607.04575 · doi:10.1364/OL.41.004190
Abstract
Dual-comb interferometry is a measurement technique that uses two laser frequency combs to retrieve complex spectra in a line-by-line basis. This technique can be implemented with electro-optic frequency combs, offering intrinsic mutual coherence, high acquisition speed and flexible repetition-rate operation. A challenge with the operation of this kind of frequency comb in dual-comb interferometry is its limited optical bandwidth. Here, we use coherent spectral broadening and demonstrate electro-optic dual-comb interferometry over the entire telecommunications C band (200 lines covering ~ 40 nm, measured within 10 microseconds at 100 signal-to-noise ratio per spectral line). These results offer new prospects for electro-optic dual-comb interferometry as a suitable technology for high-speed broadband metrology, for example in optical coherence tomography or coherent Raman microscopy.
References in corpus (8)
- Coherent, multi-heterodyne spectroscopy using stabilized optical frequency combs
- Optical frequency comb technology for ultra-broadband radio-frequency photonics
- Coherent Raman spectro-imaging with laser frequency combs
- Adaptive real-time dual-comb spectroscopy
- Frequency-agile dual-comb spectroscopy
- Coherent Dual Comb Spectroscopy at High Signal to Noise
- Ultrafast electrooptic dual-comb interferometry
- Coherent cavity-enhanced dual-comb spectroscopy
Cited by in corpus (6)
- On-chip dual comb source for spectroscopy
- Coherent multi-heterodyne spectroscopy using acousto-optic frequency combs
- Electro-optic frequency combs for rapid interrogation in cavity optomechanics
- Quantitative modeling of complex molecular response in coherent cavity-enhanced dual-comb spectroscopy
- An ultra-stable microresonator-based electro-optic dual frequency comb
- Computational electro-optic frequency comb spectroscopy