Theoretical study of line narrowing in a sub-terahertz monolithic dual laser source with an integrated reflector

Zhen Yang, Adrian Wonfor, Richard V. Penty, Ian H. White

Research output: Contribution to journalArticlepeer-review

Abstract

A monolithic design is proposed for low-noise sub-THz signal generation by integrating a reflector onto a dual laser source. The reflectivity and the position of such a reflector can be adjusted to obtain constructive feedback from the reflector to both lasers, thus causing a Vernier feedback effect. As a result, 10-fold line narrowing, the narrowing being limited by the resolution of the simulation, is predicted using a transmission line model. Finally, a simple control scheme using an electrical feedback loop to adjust laser biases is proposed to maintain the line narrowing performance. This line narrowing technique, comprising a passive integrated reflector, could allow the development of a low-cost, compact and energy-efficient solution for high-purity sub-THz signal generation.

Original languageEnglish
Pages (from-to)40-43
Number of pages4
JournalIET Optoelectronics
Volume8
Issue number2
Early online date10 Apr 2014
DOIs
Publication statusPublished - 30 Apr 2014

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Theoretical study of line narrowing in a sub-terahertz monolithic dual laser source with an integrated reflector'. Together they form a unique fingerprint.

Cite this