Temporal coherence study of four-wave mixing products with and without the laser cavity effect

Applied Optics
Suchita, R Vijaya

Abstract

In this work, we have studied the temporal coherence property of a four-wave mixing (FWM)-assisted continuous-wave erbium-doped fiber ring laser source. To understand the temporal coherence characteristics of FWM, we have analyzed the visibility of their interference pattern with the help of a Mach-Zehnder-based fiber interferometer. The visibility of FWM sidebands is compared with respect to the input pumps, with and without the cavity effect. The stand-alone FWM without any cavity effect has a visibility comparable to its input coherent pumps, while the FWM in the presence of the cavity effect has a poorer visibility due to the intra-cavity noise arising from the amplified spontaneous emission, which is not entirely annulled in broadband lasers. The study also confirms that the visibility/temporal coherence property of FWM sidebands does not depend on the efficiency of their generation.

References

Apr 28, 2006·Optics Letters·Q LinGovind P Agrawal
Jul 11, 2007·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Robert N Graf, Adam Wax
Jun 17, 2008·Science·Vincent BoyerPaul D Lett
Dec 1, 1990·Optics Letters·J P Gordon, L F Mollenauer
Nov 3, 2009·Applied Optics·Deepa VenkiteshR Vijaya
Feb 14, 2015·Optics Letters·Rahul DuttaAri T Friberg
May 15, 2015·Applied Optics·Seán P Ó DúillLiam P Barry
Dec 3, 2016·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Ari T Friberg, Tero Setälä
Oct 17, 2017·Journal of the Optical Society of America. A, Optics, Image Science, and Vision· Suchita, R Vijaya

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