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RESEARCH PRODUCT
An evaluation procedure for scanning interferometer based wavemeters
H.-j. KlugeG. EwaldS. GötteKlaus WendtKai-martin Knaaksubject
PhysicsSignal processingbusiness.industryInterference (wave propagation)LaserAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic Materialslaw.inventionInterferometryWavelengthOpticslawElectrical and Electronic EngineeringPhysical and Theoretical ChemistryLaser frequencySpectroscopybusinessSaturation (magnetic)description
Abstract A common approach to wavelength measurement is the travelling interferometer (wavemeter). We present an evaluation procedure that allows to achieve high precision with a compact device. The zero crossings of the interference signal corresponding to the reference laser is used to sample the signal of the probe laser. Electronic noise and fluctuations of the laser frequency cancel due to the large number of sample points. The evaluation procedure has been applied to a wavemeter based on a continuously moving Mach–Zehnder interferometer. A travelling path of 10 cm was sufficient to yield 3σ-accuracy of Δ λ / λ =3.2×10 −9 , demonstrated by comparison with cesium saturation spectroscopy.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-02-01 | Optics Communications |