Abstract

Thanks to a portable dual-frequency Brillouin fiber laser and a $1.55\mathrm{\mu m}$ photomixer, we report the generation of a highly coherent kilohertz level submillimeter wave emission. Low-cost telecommunications components are used to achieve very simple source architecture. The photomixer is composed of a unitravelling carrier photodiode integrated with an antenna. An emission at $316\mathrm{GHz}$ is observed and analyzed thanks to heterodyne detection with a signal-to-noise ratio $>65\mathrm{dB}$ and a $~1\mathrm{kHz}$ linewidth. The phase noise of the proposed source has the same performance at 1.7 and $316\mathrm{GHz}$. We show that this source has comparable or better phase noise compared to electrical oscillators and the tunability is much wider.

© 2011 Optical Society of America

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