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ID: 320157.0, MPI für Gravitationsphysik / Laser Interferometry & Gravitational Wave Astronomy
Low-noise, tunable diode laser for ultra-high-resolution spectroscopy
Authors:Döringshoff, K.; Ernsting, I.; Rinkleff, Rolf-Hermann; Schiller, S.; Wicht, A.
Date of Publication (YYYY-MM-DD):2007
Title of Journal:Optics Letters
Issue / Number:19
Start Page:2876
End Page:2878
Review Status:not specified
Audience:Not Specified
Abstract / Description:We demonstrate the excellent spectral properties of a diode laser setup that combines good tunability with superb short-term frequency stability and controllability. It is based on merging two concepts, the diode laser with resonant optical feedback and the grating stabilized diode laser. To characterize the short-term performance we beat two essentially identical diode lasers and find a short-term linewidth of ∼11 kHz. Phase locking between these lasers is achieved with a servo bandwidth as small as 46 kHz, although an analog phase detector is used that requires subradian residual phase error. Despite small phase error detection range and small servo bandwidth, cycle-slip-free phase locking is accomplished for typically many 10 min, and the optical power is essentially contained in a spectral window of less than 20 mHz relative to the optical reference. Due to the excellent performance this laser concept is well suited for atomic or molecular coherence experiments, which require phase locking of different lasers to each other, and as part of a flywheel for optical clocks.
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
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