Liquid-crystal-based magnetically tunable terahertz achromatic quarter-wave plate

Cho Fan Hsieh; Chan Shan Yang; Fang Cih Shih; Ru Pin Pan; Ci Ling Pan

doi:10.1364/OE.27.009933

Liquid-crystal-based magnetically tunable terahertz achromatic quarter-wave plate

Cho Fan Hsieh, Chan Shan Yang, Fang Cih Shih, Ru Pin Pan, Ci Ling Pan

Graduate Institute of Electro-Optical Engineering

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

Development of the wideband and tunable quasi-optic terahertz (THz) components is in high demand. In this work, we demonstrate a tunable achromatic quarter-wave plate (AQWP) for the THz frequency range. The phase retardation of this device can be set at 90° ± 9° from 0.20 to 0.50 THz. The operation range from 0.20 to 0.50 THz can be tuned to from 0.30 to 0.70 THz by introducing three nematic liquid crystals phase retarders, of which the birefringence can be magnetically tuned. The frequency-dependent phase retardation is in good agreement with theoretical predictions.

Original language	English
Pages (from-to)	9933-9940
Number of pages	8
Journal	Optics Express
Volume	27
Issue number	7
DOIs	https://doi.org/10.1364/OE.27.009933
Publication status	Published - 2019 Apr 1

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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title = "Liquid-crystal-based magnetically tunable terahertz achromatic quarter-wave plate",

abstract = "Development of the wideband and tunable quasi-optic terahertz (THz) components is in high demand. In this work, we demonstrate a tunable achromatic quarter-wave plate (AQWP) for the THz frequency range. The phase retardation of this device can be set at 90° ± 9° from 0.20 to 0.50 THz. The operation range from 0.20 to 0.50 THz can be tuned to from 0.30 to 0.70 THz by introducing three nematic liquid crystals phase retarders, of which the birefringence can be magnetically tuned. The frequency-dependent phase retardation is in good agreement with theoretical predictions.",

author = "Hsieh, {Cho Fan} and Yang, {Chan Shan} and Shih, {Fang Cih} and Pan, {Ru Pin} and Pan, {Ci Ling}",

note = "Funding Information: U.S. Air Force Office of Scientific Research, AOARD FA2386-13-1-4086; Ministry of Science and Technology (Project number MOST 106-2112-M-007-022-MY2 & MOST 104-2221-E-007-093-MY3 & MOST 107-2112-M-003-014-MY3); Academic Top University Program of the Ministry of Education, Taiwan. Publisher Copyright: {\textcopyright} 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.",

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doi = "10.1364/OE.27.009933",

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AU - Yang, Chan Shan

AU - Shih, Fang Cih

AU - Pan, Ru Pin

AU - Pan, Ci Ling

N1 - Funding Information: U.S. Air Force Office of Scientific Research, AOARD FA2386-13-1-4086; Ministry of Science and Technology (Project number MOST 106-2112-M-007-022-MY2 & MOST 104-2221-E-007-093-MY3 & MOST 107-2112-M-003-014-MY3); Academic Top University Program of the Ministry of Education, Taiwan. Publisher Copyright: © 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.

PY - 2019/4/1

Y1 - 2019/4/1

N2 - Development of the wideband and tunable quasi-optic terahertz (THz) components is in high demand. In this work, we demonstrate a tunable achromatic quarter-wave plate (AQWP) for the THz frequency range. The phase retardation of this device can be set at 90° ± 9° from 0.20 to 0.50 THz. The operation range from 0.20 to 0.50 THz can be tuned to from 0.30 to 0.70 THz by introducing three nematic liquid crystals phase retarders, of which the birefringence can be magnetically tuned. The frequency-dependent phase retardation is in good agreement with theoretical predictions.

AB - Development of the wideband and tunable quasi-optic terahertz (THz) components is in high demand. In this work, we demonstrate a tunable achromatic quarter-wave plate (AQWP) for the THz frequency range. The phase retardation of this device can be set at 90° ± 9° from 0.20 to 0.50 THz. The operation range from 0.20 to 0.50 THz can be tuned to from 0.30 to 0.70 THz by introducing three nematic liquid crystals phase retarders, of which the birefringence can be magnetically tuned. The frequency-dependent phase retardation is in good agreement with theoretical predictions.

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Liquid-crystal-based magnetically tunable terahertz achromatic quarter-wave plate

Abstract

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