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Keywords:

Terahertz wave engineering, Applied optics, Nonlinear optics, Photonics, Metamaterial, Liquid crystal, Photonic crystal, Nanomaterial, Polarization modulator, Frequency filter, Deflector, Holography, Photolithography, Time-domain spectroscopy, Polarimetory.

Objectives:

We develop devices and materials to further advance various applications of electromagnetic waves. In particular, we are currently focusing on terahertz waves, and are conducting research on dynamic metamaterials for high-speed modulators in the terahertz band.

Topics:

I. Active terahertz metamaterials

- IEEE Photon. J. 14, 4641006 (2022)

- Opt. Mater. Express 10, 240 (2020)

- IEEE Photon. J. 11, 5901007 (2019)

II. Voltage controllable terahertz devices with transparent electrodes

- Opt. Commun. 431, 63 (2019)

- J. Appl. Phys. 121, 143106 (2017)

- Opt. Lett. 40, 1544 (2015)

III. Optical control of terahertz waves

- AIP Advances 8, 115326 (2018)

IV. Passive terahertz metamaterials

- Appl. Phys. A 124, 789 (2018)

V. Optical region

- Polarization holographic recording in azobenzene polymers [Appl. Phys. B 114, 373 (2014)]

- Polarimetry using polarization gratings [J. Appl. Phys. 115, 023110 (2014)]

- Three-dimensional vector holography [J. Appl. Phys. 114, 043524 (2008)]