Mid-infrared spectroscopy with a broadly tunable thin-film lithium niobate optical parametric oscillator
Abstract
Mid-infrared spectroscopy, an important technique for sensing molecules, has encountered barriers from sources either limited in tuning range or excessively bulky for widespread use. We present a compact, efficient, and broadly tunable optical parametric oscillator surmounting these challenges. Leveraging dispersion-engineered thin-film lithium niobate-on-sapphire photonics and a singly resonant cavity allows broad, controlled tuning over an octave from 1.5–3.3 µm. The device generates >25mW of mid-infrared light at 3.2 µm with 15% conversion efficiency. The ability to precisely control the device’s mid-infrared emission enables spectroscopy of methane and ammonia, demonstrating our approach’s relevance for sensing. Our work signifies an important advance in nonlinear photonics miniaturization, bringing practical field applications of high-speed, broadband mid-infrared spectroscopy closer to reality.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 15, 2023
- Source ID
- 10.1364/optica.502487
Entities
People
- Alexander Y. Hwang
- Amir H. Safavi-Naeini
- Carsten Langrock
- Hubert S. Stokowski
- Jatadhari Mishra
- Marc Jankowski
- Martin M. Fejer
- Taewon Park
- Timothy P. McKenna
- Vahid Ansari
Organizations
- Air Force Office of Scientific Research
- David and Lucile Packard Foundation
- Defense Advanced Research Projects Agency
- NTT Research
- National Science Foundation
- Stanford University
- United States Department of Energy