Kavli Affiliate: Alireza Marandi
| First 5 Authors: Luis Ledezma, Arkadev Roy, Luis Costa, Ryoto Sekine, Robert Gray
| Summary:
Widely-tunable coherent sources in nanophotonics are desirable for a
multitude of applications ranging from communications to sensing. The
mid-infrared spectral region (wavelengths beyond 2 $mu$m) is particularly
important because of applications related to molecular spectroscopy. Among
tunable sources, optical parametric oscillators typically offer some of the
broadest tuning ranges; however, their implementations in nanophotonics have
been limited to modest tuning ranges and only at visible and near-infrared
wavelengths. Here, we demonstrate octave-spanning tunable optical parametric
oscillators in nanophotonic periodically-poled lithium niobate. With a pump
near 1 $mu$m, we generate outputs tunable over from 1.53 $mu$m to 3.25
$mu$m, including common telecommunication bands and into the mid-infrared. Our
results enable opportunities for numerous integrated photonic applications
requiring compact tunable sources.
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