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Stabilized Fabry-Perot interferometer and method for stabilizing a Fabry-Perot interferometer
Stabilized Fabry-Perot interferometer and method for stabilizing a Fabry-Perot interferometer
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机译:稳定的法布里-珀罗干涉仪和稳定法布里-珀罗干涉仪的方法
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摘要
The invention relates to a stable scanning or non-scanning Fabry-Perot interferometer comprising two plane mirrors (1, 2) arranged parallel to one another with an optical distance (nL) between the optical surfaces (3, 4) of the mirrors (1, 2), the interferometer radiating an output light signal (6) in response to a light input signal (5) applied parallel to the optical axis (7) of the interferometer. The interferometer is stabilised by providing means for passing at least one reference light beam (8a, 8b or 8c) through the interferometer, the reference light beam being inclined at an angle (θ) to the optical axis (7) of the interferometer. The invention also relates to a method for stabilising the interferometer.
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