Abstract

Phase noise is a critical issue for the sensitivity of the interferometric gravitational-wave detector Laser Interferometer Space Antenna that requires laser sources with $1\mathrm{W}$ of output power. A low-power seed laser with a subsequent fiber amplifier is in discussion, and we report on spectrally resolved phase-noise measurements of an ytterbium-doped fiber amplifier emitting $1\mathrm{W}$ of output power from $10\mathrm{mW}$ of seed power. Phase-noise measurements for Fourier frequencies from ${10}^{-4}\mathrm{Hz}$ to $100\mathrm{kHz}$ show $60\mathrm{rad}∕{\mathrm{Hz}}^{0.5}$ at ${10}^{-4}\mathrm{Hz}$ and $0.2\mathrm{mrad}∕{\mathrm{Hz}}^{0.5}$ at $1\mathrm{kHz}$. This measured excess phase noise is orders of magnitude below the free-running phase noise of nonplanar ring oscillators.

© 2005 Optical Society of America

Differential phase-noise properties of a ytterbium-doped fiber amplifier for the Laser Interferometer Space Antenna

M. Tröbs, S. Barke, Th. Theeg, D. Kracht, G. Heinzel, and K. Danzmann
Opt. Lett. 35(3) 435-437 (2010)

Power- and frequency-noise characteristics of an Yb-doped fiber amplifier and actuators for stabilization

Michael Tröbs, Peter Weßels, and Carsten Fallnich
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Frequency stabilization and actuator characterization of an ytterbium-doped distributed-feedback fiber laser for LISA

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J. Opt. Soc. Am. B 26(5) 1137-1140 (2009)

Beam quality and noise properties of coherently combined ytterbium doped single frequency fiber amplifiers

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Opt. Express 19(20) 19600-19606 (2011)

Phase stabilization of a large-mode-area ytterbium-doped fiber amplifier

D. C. Jones, C. D. Stacey, and A. M. Scott
Opt. Lett. 32(5) 466-468 (2007)