Real time phase modulation measurements in liquid crystals

• Autorzy: Bennis N. , Merta I. , Kalbarczyk A. , Maciejewski M. , Marc P. , Spadlo A. , Jaroszewicz L. R.

Identyfikatory

DOI

10.1016/j.opelre.2017.03.004

• Języki publikacji: EN

Abstrakty

EN

We propose real time phase measurements in liquid crystals cells using Young’s interferometer constructed with a new principle with possibility to control the distance between two point sources. The optical interference optical pattern is detected by a bicell photo-detector in a back Fourier focal plane. A phase modulation controlled by a mono pixel liquid crystals’ cell placed in a reference arm of interferometer is observed as a dynamic shift of the fringes’ pattern in spatial domain. Concept of signals’ demodulation in the Fourier focal plane will be described using a new approach to the demodulation signals. In this work we evaluate the demodulation condition of our setup and we present measurements of a dynamic phase response for nematic liquid crystals and antiferroelectric liquid crystals cells.

Słowa kluczowe

EN

young interferometer; dynamic phase demodulation; antiferroelectric liquid crystal; surface electroclinic effect

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2017
• Tom: Vol. 25, No. 2
• Strony: 69--73
• Opis fizyczny: Bibliogr. 16 poz., rys., wykr.

Twórcy

autor

Bennis N.

• Military University of Technology, Institute of Applied Physics, ul. Kaliskiego 2, Warsaw PL-00908, Poland

autor

Merta I.

• Military University of Technology, Institute of Applied Physics, ul. Kaliskiego 2, Warsaw PL-00908, Poland

autor

Kalbarczyk A.

• Military University of Technology, Institute of Applied Physics, ul. Kaliskiego 2, Warsaw PL-00908, Poland

autor

Maciejewski M.

• Military University of Technology, Institute of Optoelectronics, ul. Kaliskiego 2, Warsaw PL-00908, Poland

autor

Marc P.

• Military University of Technology, Institute of Applied Physics, ul. Kaliskiego 2, Warsaw PL-00908, Poland

autor

Spadlo A.

• Military University of Technology, Institute of Applied Physics, ul. Kaliskiego 2, Warsaw PL-00908, Poland

autor

Jaroszewicz L. R.

• Military University of Technology, Institute of Applied Physics, ul. Kaliskiego 2, Warsaw PL-00908, Poland

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)