On-chip optical parametric oscillation into the visible: generating red, orange, yellow, and green from a near-infrared pump
Abstract
The on-chip generation of coherent, single-frequency laser light that can be tuned across the visible spectrum would help enable a variety of applications in spectroscopy, metrology, and quantum science. Recently, third-order optical parametric oscillation (OPO) in a microresonator has shown great promise as an efficient and scalable approach toward this end. However, considering visible light generation, so far only red light at 420 T H z (near the edge of the visible band) has been reported. In this work, we overcome strong material dispersion at visible wavelengths and demonstrate on-chip OPO in a S i 3 N 4 microresonator covering > --> 130 T H z of the visible spectrum, including red, orange, yellow, and green wavelengths. In particular, using an input pump laser that is scanned 5 THz in the near-infrared from 386 THz to 391 THz, the OPO output signal is tuned from the near-infrared at 395 THz to the visible at 528 THz, while the OPO output idler is tuned from the near-infrared at 378 THz to the infrared at 254 THz. The widest signal-idler separation of 274 THz is more than an octave in span and is the widest demonstrated for a nanophotonic OPO to date. More generally, our work shows how nonlinear nanophotonics can transform light from readily accessible compact near-infrared lasers to targeted visible wavelengths of interest.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 12, 2020
- Source ID
- 10.1364/optica.393810
Entities
People
- Ashutosh Rao
- Daron Westly
- Grégory Moille
- Kartik Srinivasan
- Xiyuan Lu
Organizations
- Defense Advanced Research Projects Agency
- National Institute of Standards and Technology