Octave-spanning coherent supercontinuum generation in a silicon nitride waveguide

Octave-spanning coherent supercontinuum generation in a silicon nitride waveguide

We demonstrate the generation of a supercontinuum spanning more than 1.4 octaves in a silicon nitride waveguide using sub-100-fs pulses at 1 μm generated by either a 53-MHz, diode-pumped ytterbium (Yb) fiber laser or a 1-GHz, Yb:CaAlGdO(4) (Yb:CALGO) laser. Our numerical simulations show that the br...

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Veröffentlicht in:Optics letters 2015-11, Vol.40 (21), p.5117-5120
Hauptverfasser: Johnson, Adrea R, Mayer, Aline S, Klenner, Alexander, Luke, Kevin, Lamb, Erin S, Lamont, Michael R E, Joshi, Chaitanya, Okawachi, Yoshitomo, Wise, Frank W, Lipson, Michal, Keller, Ursula, Gaeta, Alexander L
Format: Artikel
Sprache:eng
Schlagworte:
Coherence
Equipment Design
Equipment Failure Analysis
Fiber lasers
Lasers
Lasers, Solid-State
Light
Metrology
Optical Coherence Tomography
Refractometry - instrumentation
Scattering, Radiation
Silicon Compounds - chemistry
Silicon nitride
Spectra
Surface Plasmon Resonance - instrumentation
Waveguides
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Zusammenfassung:We demonstrate the generation of a supercontinuum spanning more than 1.4 octaves in a silicon nitride waveguide using sub-100-fs pulses at 1 μm generated by either a 53-MHz, diode-pumped ytterbium (Yb) fiber laser or a 1-GHz, Yb:CaAlGdO(4) (Yb:CALGO) laser. Our numerical simulations show that the broadband supercontinuum is fully coherent, and a spectral interference measurement is used to verify that the supercontinuum generated with the Yb:CALGO laser possesses a high degree of coherence over the majority of its spectral bandwidth. This coherent spectrum may be utilized for optical coherence tomography, spectroscopy, and frequency metrology.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.40.005117