Nearly-analogue blazed phase grating using high birefringence liquid crystal

• Autorzy: Bennis N. , Geday M. A. , Quintana X. , Cerrolaza B. , Medialdea D. P. , Spadło A. , Dąbrowski R. , Otón J. M.
• Języki publikacji: EN

Abstrakty

EN

Diffraction of liquid crystal gratings has been thoroughly studied for many applications such as diffraction optics, optical processing, and spectral analysis. In pure optical processing one varies the direction of propagation of light beam without any mechanical adjustment. In this work we propose a beam steering device using highly birefringent liquid crystal material. Using a highly birefringent material one can reduce the LC layer thickness needed to achieve 2 π of phase modulation and thus reduce the fringing effect caused by deformation of the electric field at the edge of the pixel. Here, we present 1.5-µm thick, high-resolution diffraction grating with non-detectable fringing.

Słowa kluczowe

EN

high birefringence nematic liquid crystal; blaze grating; diffraction; fringe effect

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2009
• Tom: Vol. 17, No. 2
• Strony: 112--115
• Opis fizyczny: Bibliogr. 6 poz., wyjr., il.

Twórcy

autor

Bennis N.

autor

Geday M. A.

autor

Quintana X.

autor

Cerrolaza B.

autor

Medialdea D. P.

autor

Spadło A.

autor

Dąbrowski R.

autor

Otón J. M.

• Departamento de Tecnología Fotónica, ETSI Telecomunicación, Universidad Politécnica de Madrid, Ciudad Universitaria s/n, E-28040 Madrid, Spain,

Bibliografia

• [1] X. Wang, D. Wilson, R. Muller, P. Maker, and D. Psaltis: Liquid-crystal blazed-grating beam deflector. Appl. Optics 39, 6545-6555, 2000.
• [2] S. Serati and J. Stockley: Advanced liquid crystal on silicon optical phased arrays. Proc. IEEE Aerospace Conf., Big Sky, Montana, 9-16, 2002.
• [3] K. H. Fan Chiang, S. T. Wu, and S. H. Chen: Fringing field effect of the liquid-crystal-on-silicon devices. Jpn. J. Appl. Phys. 41, 4577-4585, 2002.
• [4] B. Apter, U. Efron, and E. B. Treidel: On the fringing-field effect in liquid-crystal beam-steering devices. Appl. Optics 43, 11-19, 2004.
• [5] A. Spadło, R. Dąbrowski, M. Filipowicz, Z. Stolarz, J. Przedmojski, S. Gauza, Y. Claire, H. Fan, and S. T. Wu: Synthesis, mesomorphic and optical properties of isothiocyanatotolanes. Liq. Cryst. 30, 191-198, 2003.
• [6] A. Spadło, R. Dąbrowski, J. Dziaduszek, S. Urban, E. Ścibior, S. Gauza, and S. T. Wu: Liquid crystalline materials with high birefringence. J. Opt. Technol. 72, 659-661, 2005.