CAPPA was delighted to recently be published in the Light: Science & Applications (LSA), which is part of the Nature Journal. CAPPA was featured for their recent paper on “Thermo-optically induced transparency on a photonic chip” and was written by several researchers including CAPPA researchers Liam O’ Faloain and Simone Iadanza and previous CAPPA member Sebastian Schulz. Light: Science & Applications Journal has an Impact factor 17.78

Light: Science & Applications (LSA) seeks to promote research from all aspects of optics and photonics, including basic, applied and engineering research and applications. This journal publishes new research results in cutting-edge and emerging topics in optics and photonics, as well as covering traditional topics in optical engineering. The journal will publish original articles and reviews that are of high quality, high interest and far-reaching consequence. Light: Science & Applications is an open access, online-only journal.

Controlling the optical response of a medium through suitably tuned coherent electromagnetic fields is highly relevant in a number of potential applications, from all-optical modulators to optical storage devices. In particular, electromagnetically induced transparency (EIT) is an established phenomenon in which destructive quantum interference creates a transparency window over a narrow spectral range around an absorption line, which, in turn, allows to slow and ultimately stop light due to the anomalous refractive index dispersion. Here we report on the observation of a new form of both induced transparency and amplification of a weak probe beam in a strongly driven silicon photonic crystal resonator at room temperature. The effect is based on the oscillating temperature field induced in a nonlinear optical cavity, and it reproduces many of the key features of EIT while being independent of either atomic or mechanical resonances. Such thermo-optically induced transparency will allow a versatile implementation of EIT-analogs in an integrated photonic platform, at almost arbitrary wavelength of interest, room temperature and in a practical, low cost, and scalable system.

You can read the full paper here and learn more about the research and publications at CAPPA here.