Author(s): Lu, JJ (Lu, Juanjuan); Liu, XW (Liu, Xianwen); Bruch, AW (Bruch, Alexander W.); Zhang, L (Zhang, Liang); Wang, JX (Wang, Junxi); Yan, JC (Yan, Jianchang); Tang, HX (Tang, Hong X.)

Source: OPTICS LETTERS Volume: 45 Issue: 16 Pages: 4499-4502 DOI: 10.1364/OL.398257 Published: AUG 15 2020

Abstract: We demonstrate ultrabroadband supercontinuum generation from ultraviolet to mid-infrared wavelengths in single-crystalline aluminum nitride waveguides. Tunable dispersive waves are observed at the mid-infrared regime by precisely controlling the waveguide widths. In addition, ultraviolet light is generated through cascaded second-harmonic generation in the modal phase-matched waveguides. Numerical simulation indicates a high degree of coherence of the generated spectrum at around the telecom pump and two dispersive waves. Our results establish a reliable path for multiple octave supercontinuum comb generation in single-crystalline aluminum nitride to enable applications including precision frequency metrology and spectroscopy. (C) 2020 Optical Society of America

Accession Number: WOS:000564903500035

PubMed ID: 32796993

ISSN: 0146-9592

eISSN: 1539-4794

Full Text: https://www.osapublishing.org/ol/abstract.cfm?uri=ol-45-16-4499