Octave-spanning coherent supercontinuum generation in a silicon nitride waveguide

Publication Type:

Journal Article


Opt. Lett., OSA, Volume 40, Number 21, p.5117–5120 (2015)




integrated optics, Nonlinear optics, Supercontinuum generation


<p>We demonstrate the generation of a supercontinuum spanning more than 1.4 octaves in a silicon nitride waveguide using sub-100-fs pulses at 1µm generated by either a 53-MHz, diode-pumped ytterbium (Yb) fiber laser or a 1-GHz, Yb:CaAlGdO4 (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.</p>

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