Subwavelength amorphous silicon transmission gratings and applications in polarizers and waveplates

Stephen Y. Chou, Wenyong Deng

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

The fabrication and investigation of thin subwavelength transmission gratings made of high refractive index material on silica substrates are reported. For a normal incident light, in addition to large birefringence, strong polarization effects were observed. Both polarization and birefringence effects depend on the ratio of grating period to wavelength, having the largest variation when the period is near half of the wavelength. The largest transmission difference for the polarization parallel and perpendicular to the grating fingers is 12 dB; the largest phase difference is 170°.

Original languageEnglish (US)
Pages (from-to)742-744
Number of pages3
JournalApplied Physics Letters
Volume67
Issue number6
DOIs
StatePublished - Aug 7 1995

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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