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Journals and Conferences
We propose a spatial cross modulation method using a random diffuser and a phase-only spatial light modulator (SLM), by which arbitrary complex-amplitude fields can be generated with higher spatial resolution and diffraction efficiency than off-axis and double-phase computer-generated holograms. Our method encodes the original complex object as a phase-only… (More)
We propose a two-channel holographic diversity interferometer (2ch-HDI) system for single-shot and highly accurate measurements of complex amplitude fields with a simple optical setup. In this method, two phase-shifted interference patterns are generated, without requiring a phase-shifting device, by entering a circularly polarized reference beam into a… (More)
We propose the reconfigurable spatial mode conversion method using a phase-type spatial light modulator, and implement the experiment for interconversion among LP01, LP11, and higher-order spatial modes.
An optical circulator for near IR radiation was developed for optical transmission systems. This circulator consists of a 45 degrees Faraday rotator using a YIG single crystal and two Glan-Taylor prisms. It has four nonre-ciptocai and two reciprocal ports. Using reciprocal ports for bidirectional transmission systems with multi-mode fibers, which do not… (More)
For the realization of field emission displays, developing low-turn-on-voltage nanosized electron emitters and corresponding efficient nanosized phosphor materials are still key focuses of future research. Zinc oxide is a high potential material for applications in optoelectronics. Its wide direct gap of 3.37 eV and large exciton binding energy of 10 meV at… (More)
In a conventional digital phase conjugation system, only the phase of an input light is time-reversed. This deteriorates phase conjugation fidelity and restricts application fields to specific cases only when the input light has uniformly-distributed scattered wavefront. To overcome these difficulties, we present a digital phase conjugate mirror based on… (More)
Mooseok Jang,1, 3, ∗ Yu Horie,2, ∗ Atsushi Shibukawa,1, ∗ Joshua Brake,1 Yan Liu,1 Seyedeh Mahsa Kamali,2 Amir Arbabi,2, 4 Haowen Ruan,1 Andrei Faraon,2, † and Changhuei Yang1, ‡ 1Department of Electrical Engineering, California Institute of Technology, 1200 E. California Blvd., Pasadena, California 91125, USA 2T. J. Watson Laboratory of Applied Physics,… (More)
Optical properties of Ag and SiO(2) co-evaporated films were studied in the visible and near ir regions, and a novel neutral density filter for near ir radiation has been proposed. The films, which contain 56-vol.% Ag, exhibit almost wavelength-independent optical transmittance in the longer than 1-microm wavelength region. Neutral density filters, which… (More)
TE-TM mode conversion was examined in two-layer epitaxial garnet films, with (Sc, Ga) substituted YIG films on a GGG substrate. Mode conversion efficiency of 96% was observed in a single-mode waveguide over a 4.0-mm propagation distance at 1.15-microm wavelength. Mode conversion was increased by 2.0 X 10(-4) optical anisotropy arising from the photoelastic… (More)
To improve the measurement speed of optical tomography based on the virtual phase conjugation, a virtual measurement position control technique is proposed. Tomographic images were observed with high depth-resolution and high acquisition rate in the numerical simulations.