Note: An in situ method for measuring the non-linear response of a Fabry-Perot cavity

The transfer cavity is a very important frequency reference for laser stabilization and is widely used for applications such as precision measurements and laser cooling of ions or molecules. But the non-linear response of the piezoelectric ceramic transducer (PZT) in the Fabry-Perot cavity limits th...

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Bibliographic Details
Published in:Review of scientific instruments 2016-09, Vol.87 (9), p.096102-096102
Main Authors: Bu, Wenhao, Liu, Mengke, Xie, Dizhou, Yan, Bo
Format: Article
Language:English
Subjects:
Fabry-Perot interferometers
Laser cooling
Lasers
Linearity
Nonlinear response
Nonlinearity
Piezoelectricity
Scientific apparatus & instruments
Stabilization
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Summary:The transfer cavity is a very important frequency reference for laser stabilization and is widely used for applications such as precision measurements and laser cooling of ions or molecules. But the non-linear response of the piezoelectric ceramic transducer (PZT) in the Fabry-Perot cavity limits the performance of the laser stabilization. Thus, measuring and controlling such non-linearity is essential. Here we report an in situ, optical method to characterize this non-linearity by measuring the resonant signals of a dual-frequency laser. The differential measurement makes it insensitive to the laser and cavity drifts, while maintaining a very high sensitivity. It can be applied for various applications with PZTs, especially in an optical lab.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.4963361