Abstract

In this work, for the first time, to the best of our knowledge, an anomalous dispersion CMOS-compatible ${\mathrm{Ta}}_2{\mathrm{O}}_5$ waveguide was realized, and broadband on-chip supercontinuum generation (SCG) was accordingly demonstrated. When pumped at a center wavelength of 1056 nm with pulses of 100 fs duration and peak power of 396 W, a supercontinuum ranging from 585 nm to 1697 nm was generated, comprising a bandwidth of more than 1.5 octaves and leading to an efficient SCG source. The excellent performance for ${\mathrm{Ta}}_2{\mathrm{O}}_5$ to generate SCG benefits mainly from its high nonlinear refractive index, which enhances the efficiency of the nonlinear conversion process.

© 2019 Optical Society of America

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