%0 Journal Article
%T Phase-locked photonic wire lasers by ¦Ð coupling
%J -
%D 2018
%R https://doi.org/10.1038/s41566-018-0307-0
%X The term photonic wire laser is now widely used for lasers with transverse dimensions much smaller than the wavelength. As a result, a large fraction of the mode propagates outside the solid core. Here, we propose and demonstrate a scheme to form a coupled cavity by taking advantage of this unique feature of photonic wire lasers. In this scheme, we used quantum cascade lasers with antenna-coupled third-order distributed feedback grating as the platform. Inspired by the chemistry of hybridization, our scheme phase-locks multiple such lasers by ¦Ð£¿coupling. With the coupled-cavity laser, we demonstrated several performance metrics that are important for various applications in sensing and imaging: a continuous electrical tuning of ~10£¿GHz at ~3.8£¿THz (fractional tuning of ~0.26%), a good level of output power (~50¨C90£¿mW of continuous-wave power) and tight beam patterns (~100 of beam divergence)
%U https://www.nature.com/articles/s41566-018-0307-0