Real-time polarimeter with a form-birefringent micro retarder array

Hisao Kikuta; Hisashi Haccho; Koichi Iwata; Tetsuya Hamamoto; Hiroshi Toyota; Tsutomu Yotsuya

doi:10.1117/12.427019

8 May 2001 Real-time polarimeter with a form-birefringent micro retarder array

Hisao Kikuta, Hisashi Haccho, Koichi Iwata, Tetsuya Hamamoto, Hiroshi Toyota, Tsutomu Yotsuya

Proceedings Volume 4416, Optical Engineering for Sensing and Nanotechnology (ICOSN 2001); (2001) https://doi.org/10.1117/12.427019
Event: Optical Engineering for Sensing and Nanotechnology (ICOSN '01), 2001, Yokohama, Japan

Abstract

We present the real time polarimeter with a micro retarder array consisting of subwavelength gratings with different directions. A 2x2 form-birefringent micro retarder array was fabricated with an electron-beam lithography method and a reactive ion etching technique. Each retarder was a TiO₂ grating with 300-nm period on a silica substrate, and the phase retardance was 0.31 (pi) for 633-nm wavelength light. Using the fabricated retarder array, the real time polarimeter was made. The micro retarder array and a linear polarizer film were stacked up on a 2x2 photo-detector array. Four Stokes parameters were computed at a real time rate from outputs of the detector array. We could measure temporal change in polarization states of light by simple experiments.

Citation Download Citation

Hisao Kikuta, Hisashi Haccho, Koichi Iwata, Tetsuya Hamamoto, Hiroshi Toyota, and Tsutomu Yotsuya "Real-time polarimeter with a form-birefringent micro retarder array", Proc. SPIE 4416, Optical Engineering for Sensing and Nanotechnology (ICOSN 2001), (8 May 2001); https://doi.org/10.1117/12.427019

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