Visible-to-mid-IR tunable frequency comb in nanophotonics
Abstract
Optical frequency comb is an enabling technology for a multitude of applications from metrology to ranging and communications. The tremendous progress in sources of optical frequency combs has mostly been centered around the near-infrared spectral region, while many applications demand sources in the visible and mid-infrared, which have so far been challenging to achieve, especially in nanophotonics. Here, we report widely tunable frequency comb generation using optical parametric oscillators in lithium niobate nanophotonics. We demonstrate sub-picosecond frequency combs tunable beyond an octave extending from 1.5 up to 3.3 μm with femtojoule-level thresholds on a single chip. We utilize the up-conversion of the infrared combs to generate visible frequency combs reaching 620 nm on the same chip. The ultra-broadband tunability and visible-to-mid-infrared spectral coverage of our source highlight a practical and universal path for the realization of efficient frequency comb sources in nanophotonics, overcoming their spectral sparsity.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 17, 2023
- Source ID
- 10.1038/s41467-023-42289-0
Entities
People
- Alireza Marandi
- Arkadev Roy
- Luis Costa
- Luis Ledezma
- Mingchen Liu
- Qiushi Guo
- Robert Gray
- Ryan M. Briggs
- Ryoto Sekine
Organizations
- Air Force Office of Scientific Research
- Army Research Office
- National Science Foundation