Scientific Results

Phase noise analysis of a 10 Watt Yb-doped fibre amplifier seeded by a 1-Hz-linewidth laser

Year: 2013

Authors: Ricciardi I., Mosca S., Maddaloni P., Santamaria L., De Rosa M., De Natale P.

Autors Affiliation: INO–CNR, Istituto Nazionale di Ottica, Sezione di Napoli, and LENS, European Laboratory for Nonlinear Spectroscopy, Via Campi Flegrei 34, I-80078 Pozzuoli (NA), Italy; INO–CNR, Istituto Nazionale di Ottica, and LENS, European Laboratory for Nonlinear Spectroscopy, Largo E. Fermi, I-50125 Firenze, Italy

Abstract: We report a thorough analysis of the spectral properties of an ytterbium-doped fibre amplifier, seeded by a Nd:YAG laser, whose linewidth has been narrowed down to 1 Hz by locking the laser to an ultrastable reference cavity. We measured the phase noise contribution from the amplifier, showing that it does not depend on the amplification gain, nor on the seed laser linewidth. Moreover, the amplifier-induced phase noise does not affect the final linewidth, as verified by heterodyne linewidth measurement within the 0.2 Hz resolution bandwidth of our acquisition set-up. Preservation of spectral purity below Hz-level is promising for more demanding applications, from nonlinear optics to frequency/time-standard transfer over fibre links. (C) 2013 Optical Society of America

Journal/Review: OPTICS EXPRESS

Volume: 21 (12)      Pages from: 14618  to: 14626

More Information: This work was supported by the Progetto Operativo Nazionale (PON), PON01_01525 MONi-toraggio Innovativo per le Coste e l\’Ambiente Marino – MONICA.
KeyWords: Amplifiers (electronic); Linewidth; Nonlinear optics; Phase noise; Ytterbium, Amplification gain; Linewidth measurements; Noise contributions; Phase noise analysis; Resolution bandwidth; Spectral properties; Spectral purity; Ytterbium-doped, Neodymium lasers, amplifier; artifact; device failure analysis; devices; equipment design; fiber optics; signal noise ratio; solid state laser; article; equipment; equipment failure; fiber optics, Amplifiers, Electronic; Artifacts; Equipment Design; Equipment Failure Analysis; Fiber Optic Technology; Lasers, Solid-State; Signal-To-Noise Ratio, Amplifiers, Electronic; Artifacts; Equipment Design; Equipment Failure Analysis; Fiber Optic Technology; Lasers, Solid-State; Signal-To-Noise Ratio
DOI: 10.1364/OE.21.014618

Citations: 12
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