THORLABS SA210 Series, Руководство пользователя

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Fabry-Perot Interferometer Chapter 3: Description
Rev D, November 30, 2017 Page 3
Chapter 3 Description
The SA210 is a high finesse Spectrum Analyzer used to examine the fine structures of the spectral characteristics
of CW lasers. The spectrum analyzer consists of a confocal cavity that contains two high reflectivity mirrors; by
varying the mirror separation with a piezoelectric transducer the cavity acts as a very narrow band-pass filter.
Knowing the free spectral range of the SA210 allows the time-base of an oscilloscope to be calibrated to facilitate
quantitative measurements of a laser line shape.
3.1. Confocal Cavity Configuration
Mirrors shown below are AR coated on the outer surfaces and HR coated on the inner surfaces.
FSR=c/4d
Available Coating Ranges
Item # Wavelength Range
SA210-3B
350 - 535 nm
SA210-5B
535 - 820 nm
SA210-8B
820 - 1275 nm
SA210-12B
1275 - 2000 nm
SA210-18C
1800 - 2600 nm