Open AccessUltraviolet to mid-infrared supercontinuum generation in single-crystalline aluminum nitride waveguides.
Author(s) -
Juanjuan Lu,
Xianwen Liu,
Alexander W. Bruch,
Liang Zhang,
Junxi Wang,
Jianchang Yan,
Hong X. Tang
Publication year - 2020
Publication title -
optics letters/optics index
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.524
H-Index - 272
eISSN - 1071-2763
pISSN - 0146-9592
DOI - 10.1364/ol.398257
Subject(s) - supercontinuum , optics , materials science , optoelectronics , ultraviolet , octave (electronics) , infrared , wavelength , nitride , physics , photonic crystal fiber , nanotechnology , layer (electronics)
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.