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          Institute: MPI für Gravitationsphysik     Collection: Laser Interferometry & Gravitational Wave Astronomy     Display Documents



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ID: 438331.0, MPI für Gravitationsphysik / Laser Interferometry & Gravitational Wave Astronomy
Strong reduction of laser power noise by means of a Kerr nonlinear cavity
Authors:Khalaidovski, Alexander; Thüring, André; Rehbein, Henning; Lastzka, Nico; Willke, Benno; Danzmann, Karsten; Schnabel, Roman
Date of Publication (YYYY-MM-DD):2009
Title of Journal:Physical Review A
Volume:80
Issue / Number:5
Sequence Number of Article:053801
Review Status:not specified
Audience:Not Specified
Abstract / Description:We demonstrated the power noise reduction of a continuous-wave laser field by means of an effective third-order Kerr nonlinear cavity. In contrast to conventional noise reduction schemes relying on linear cavities, a strong noise suppression at Fourier frequencies below the linewidth of the nonlinear cavity was possible. The laser light was reflected off a Kerr nonlinear cavity that had a half width half maximum linewidth of 4.5 MHz. The cavity was operated slightly off-resonance at approximately half of the maximum power buildup, close to its so-called critical state; a power noise reduction of up to 32 dB at Fourier frequencies below 1 MHz was observed after reflection. The effective third-order nonlinearity was a so-called cascaded second-order nonlinearity of MgO:LiNbO3. The laser had a power of 0.75 W at the wavelength of 1064 nm.
External Publication Status:published
Document Type:Article
Communicated by:Karsten Danzmann
Affiliations:MPI für Gravitationsphysik/Laser Interferometry & Gravitational Wave Astronomy
MPI für Gravitationsphysik/Teilinstitut Hannover
Identifiers:DOI:10.1103/PhysRevA.80.053801
URL:http://link.aps.org/doi/10.1103/PhysRevA.80.053801
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