Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Takeya Sakai"'
Autor:
Hiroshi Ono, Yukitoshi Hattori, Tomoyuki Sasaki, Takeya Sakai, Nobuhiro Kawatsuki, Ryusei Momosaki, Kazunari Ashikawa, Moritsugu Sakamoto, Yoshichika Tanaka, Koya Yamada, Kohei Noda
Publikováno v:
Applied optics. 60(23)
In this paper, geometric-phase lenses, which can not only correct wavefront aberrations but also magnify an aerial image, have been proposed for use in an aerial display system composed of a retroreflector array, an orthogonal-circular polarization g
Autor:
Tomoyuki Sasaki, Nobuhiro Kawatsuki, Ryusei Momosaki, Hiroshi Ono, Kohei Noda, Moritsugu Sakamoto, Yukitoshi Hattori, Takeya Sakai
Publikováno v:
2021 26th Microoptics Conference (MOC).
The incident angle dependence of the diffraction properties of orthogonal-circular polarization gratings (OCPGs) fabricated using a polymer liquid crystal exhibiting biaxial anisotropy have been investigated. It was found that a specific biaxial anis
Autor:
Ryusei Momosaki, Moritsugu Sakamoto, Kohei Noda, Yasuhiro Tamayama, Tomoyuki Sasaki, Takeya Unuma, Takeya Sakai, Yukitoshi Hattori, Nobuhiro Kawatsuki, Hiroshi Ono
Publikováno v:
Journal of the Optical Society of America B. 39:1964
A theoretical framework for determining biaxial anisotropy suitable for reducing the incident angle dependence of a polarization grating is proposed. The principal refractive indices are uniquely given by quantifying the biaxial anisotropy through th
Autor:
Tomoyuki Sasaki, Takeya Sakai, Nobuhiro Kawatsuki, Yukitoshi Hattori, Hiroshi Ono, Kohei Noda, Moritsugu Sakamoto, Tadayoshi Kamei, Huynh Thanh Nhan
Publikováno v:
Applied optics. 60(7)
A polarized laser beam steering system using multiply cascaded rotating polarization gratings (PGs) is presented. The rotating PGs steer incident circularly polarized beams with high optical throughput because the theoretical limitation of the PG dif
Autor:
Takeya Sakai, Hiroshi Ono, Kohei Noda, Moritsugu Sakamoto, Yukitoshi Hattori, Ryusei Momosaki, Nobuhiro Kawatsuki, Tomoyuki Sasaki
Publikováno v:
Journal of the Optical Society of America B. 38:3575
The incident angle dependences of the diffraction properties of orthogonal-circular polarization gratings (OCPGs) fabricated using a polymer liquid crystal exhibiting biaxial anisotropy have been investigated. The investigations were conducted with t
Autor:
Yukitoshi Hattori, Tomoyuki Sasaki, Hiroshi Ono, Yushi Kakedo, Masayuki Tanaka, Nobuhiro Kawatsuki, Yusuke Kaneko, Kohei Noda, Takeya Sakai, Moritsugu Sakamoto
Publikováno v:
Optics Express. 29:27071
A hybrid polarization grating that can spatially separate orthogonal states of a vector beam with the same polarization topological charge is presented. The hybrid polarization grating is assembled using a fork-shaped polarization grating and a quart
Autor:
Yoshichika Tanaka, Nobuhiro Kawatsuki, Kohei Noda, Takeya Sakai, Kentaro Ohkoshi, Ryusei Momosaki, Hiroshi Ono, Yukitoshi Hattori, Tomoyuki Sasaki, Kazunari Ashikawa, Moritsugu Sakamoto
Publikováno v:
Journal of the Optical Society of America B. 37:3222
We propose two types of wavefront aberration correction in geometric-phase lenses (GPLs). First, in situations in which the incident light on a GPL has a wavefront aberration represented by the Zernike polynomial, the wavefront aberration is eliminat
Autor:
Hiroshi Ono, Koya Yamada, Yukitoshi Hattori, Kohei Noda, Ryusei Momosaki, Takeya Sakai, Yoshichika Tanaka, Nobuhiro Kawatsuki, Moritsugu Sakamoto, Tomoyuki Sasaki
Publikováno v:
Applied Optics. 59:4228
An aerial display scheme consisting of an orthogonal circular polarization grating (OCPG), a waveplate, a retroreflector array (RRA), and a right-angle prism (RAP) was developed. Because of the OCPG’s functionality, retroreflected light from the RR
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 46:4712-4718
Thermally enhanced photoinduced in-plane molecular reorientation in new photo-cross-linkable polymer liquid crystalline (PPLC) films comprising 4-[ω-(4-methoxycinnamoyloxy)alkyloxy]biphenyl side groups is explored using linearly polarized ultraviole
Publikováno v:
Macromolecules. 40:6355-6360
Thermally enhanced photoinduced reorientation in a photo-cross-linkable liquid crystalline polymethacrylate comprised of 4-(ω-cinnamoyloxyalkyloxy)biphenyl side groups is investigated by irradiating with linearly polarized ultraviolet (LPUV) light a