Question: A single-pass interferometer shown in Figure 3 is an optical metrology system used for different measurement applications such as the measurement of the refractive index
A single-pass interferometer shown in Figure 3 is an optical metrology system used for different measurement applications such as the measurement of the refractive index of glass. A and D are the beam splitters, and B and C are mirrors. The refractive index of the glass is equal to 1.5 and its thickness is represented by tg.

Beam splitter A B LASER Mirror to D Beam splitter L - c Mirror Glass medium Fringes Figure 3
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