Low absorption chlorinated liquid crystals for infrared applications

We report a wide nematic range and low absorption loss chlorinated liquid crystal mixture, designated as IR-M2, for mid-wave infrared applications. IR-M2 is quite transparent in the 3.8-5.0 μm window while keeping a high birefringence (Δn~0.194) in the infrared region and a modest dielectric anisotropy. For long-wave infrared applications, we propose another high Δn chlorinated cyanoterphenyl compound.

[1]  Daniel Dolfi,et al.  Liquid crystal microwave phase shifter , 1993 .

[2]  Shin-Tson Wu,et al.  Absorption measurements of liquid crystals in the ultraviolet, visible, and infrared , 1998 .

[3]  Daniel Dolfi,et al.  Liquid-crystal microwave phase shifter , 1994 .

[4]  U Efron,et al.  Birefringence measurements of liquid crystals. , 1984, Applied optics.

[5]  Shin-Tson Wu,et al.  Low absorption liquid crystals for mid-wave infrared applications. , 2011, Optics express.

[6]  Wang Zhiyong.  Optical-phased-array (OPA) Technology Applied to Laser Radar , 2012 .

[7]  Yan-qing Lu,et al.  Self-polarizing terahertz liquid crystal phase shifter , 2011 .

[8]  G. W. Gray,et al.  The Synthesis of Deuteriated 4-n-Alkyl-4′-Cyanobiphenyls , 1978 .

[9]  Shin-Tson Wu,et al.  Low loss liquid crystals for infrared applications , 2014 .

[10]  Shin-Tson Wu,et al.  Fast-response infrared phase modulator based on polymer network liquid crystal , 2015 .

[11]  Ci-Ling Pan,et al.  Voltage-controlled liquid-crystal terahertz phase shifter and quarter-wave plate. , 2006, Optics letters.

[12]  I. Haller.  Thermodynamic and static properties of liquid crystals , 1975 .

[13]  Shin-Tson Wu,et al.  Perdeuterated cyanobiphenyl liquid crystals for infrared applications , 2002 .

[14]  Shin-Tson Wu,et al.  Infrared Properties Of Nematic Liquid Crystals: An Overview , 1987 .

[15]  Wu.  Experimental confirmation of the Osipov-Terentjev theory on the viscosity of nematic liquid crystals. , 1990, Physical review. A, Atomic, molecular, and optical physics.

[16]  Shin-Tson Wu,et al.  Infrared birefringence of liquid crystals , 1984 .

[17]  Shin-Tson Wu,et al.  Low voltage polymer network liquid crystal for infrared spatial light modulators. , 2015, Optics express.

[18]  Shin-Tson Wu,et al.  Potential liquid crystal mixtures for Co2 laser application , 1994 .

[19]  Wu,et al.  Birefringence dispersions of liquid crystals. , 1986, Physical review. A, General physics.

[20]  Anna M. Lackner,et al.  Liquid crystal millimeter wave electronic phase shifter , 1993 .