• NILANJAN MUKHOPADHYAY

      Articles written in Pramana – Journal of Physics

    • Design of a narrow band-pass birefringent filter for visible range

      NILANJAN MUKHOPADHYAY ARIJIT SAHA KALLOL BHATTACHARYA

      More Details Abstract Fulltext PDF

      In this communication, the construction and transmission characteristics of a narrow band-pass birefringent filter have been investigated. The filter is formed by a combination of two sets of retarders with a polariser in between, and two linear polarisers placed at the two extreme ends. The sets of retarders are chosen to be a cascaded fan-type Solc filter having two different kinds of retardations, resulting in filtering characteristics better than those birefringent filters proposed for the visible range. The performance of this proposed filter is better in terms of effective suppression of side peak amplitudes as well as reduction of bandwidth with less number of waveplates. This birefringent filter can be used inside a linear resonator.

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