Journal
OPTICS LETTERS
Volume 44, Issue 6, Pages 1492-1495Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.44.001492
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Funding
- Defense Advanced Research Projects Agency (DARPA) [HR0011-16-C-0118]
- David and Lucile Packard Foundation
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We demonstrate octave-spanning supercontinuum generation in unpoled lithium niobate waveguides, which are engineered to possess anomalous dispersion and pumped by a turn-key femtosecond laser centered at 1560 nm. Tunable dispersive waves and strong phase-matched second-harmonic generation are both observed by controlling the widths of the waveguides. The major features of the experimental spectra are reproduced by numerical modeling of the generalized nonlinear Schrodinger equation, which can be used to guide waveguide designs for tailoring the supercontinuum spectrum. Our results identify a path to a simple and integrable supercontinuum source in lithium niobate nanophotonic platform and will enable new capabilities in precision frequency metrology. (C) 2019 Optical Society of America
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