Modeling and analysis of an extrinsic Fabry-Perot interferometer cavity.
A schematic representation of optical feedback between two resonator mirrors undergoing a phase shift each round trip as a function of the separation of the mirrors is studied. A transfer function modeling of the extrinsic Fabry-Perot interferometer (EFPI) is presented. Nyquist analysis has been used to forecast the operational stability and possibility of interference in an EFPI. The analysis with two perfectly parallel surfaces of the cavity shows efficient interference. The performance when there is some tilt between the two mirrors in the cavity is also studied and is presented. In this case some restricted interference is found.
Gangopadhyay
Tarun Kumar
TK
Central Glass and Ceramic Research Institute (CSIR), Kolkata-700 032, India. tkg@cgcri.res.in
Mandal
Sanjoy
S
Dasgupta
Kamal
K
Basak
Tapas Kumar
TK
Ghosh
Shyamal Kumar
SK