Polarization-state-dependent attenuation and amplification in a columnar thin film

Tom Mackay, Akhlesh Lakhtakia

Research output: Contribution to journalArticlepeer-review


We numerically investigated the plane-wave reflection-transmission characteristics of a columnar thin film (CTF) whose columns are made from a dissipative material but whose void regions are filled with an active material. By computing the reflectances and transmittances, we found that the CTF can simultaneously amplify s-polarized incident light and attenuate p-polarized incident light, or vice versa. This polarization-state-dependent attenuation and amplification phenomenon depends upon the angle of incidence and the thickness of the CTF.
Original languageEnglish
Article number12LT01
JournalJournal of optics
Early online date5 Oct 2017
Publication statusPublished - 26 Oct 2017


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