11
Interferometry
11.1 Introduction
In this chapter, some widely applied interferometric configurations in the measurement of wavelength and linewidth are described. Attention is focussed on two-beam, and multiple-beam, interferometers. See Steel (1967) for a detailed treatment on the subject of interferometry. The presentation given here follows that of the first edition of Tunable Laser Optics (Duarte 2003) while adopting modifications and improvements introduced mainly in the work of Duarte (2014).
11.2 Two-Beam Interferometers
Two-beam interferometers are optical devices that divide and then recombine a light beam. It is on recombination of the beams that interference occurs. The most well-known two-beam interferometers are the Sagnac ...
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