Tokyo Institute of Technology · 공학
미모타 교수의 연구실은 타원주파수(THz) 영역의 신호 발생 및 검출을 위한 레지스터 터널링 다이오드(RTD) 기반 이미징 기술과, GaAs 기반 반도체 레이저 및 양자우물 구조를 활용한 장파장 광원 개발에 중점을 두고 있습니다. 특히, 고해상도 타원주파수 이미징, 광학적 간섭을 통한 초해상도 측정, 그리고 무선 전력 전송 기술의 실용화를 위한 광학적 전력 전달 기술에 대한 연구를 진행하고 있습니다. 이는 향후 의료 영상, 스마트 제조, 무선 전력 공급 시스템 등 다양한 분야에 응용될 잠재력을 지닙니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Abstract We report a feasibility study of a terahertz imaging system with resonant tunneling diodes (RTDs) that oscillate at 0.30 THz. A pair of RTDs acted as an emitter and a detector in the system. Terahertz reflection images of opaque samples were acquired with our RTD imaging system. A spatial resolution of 1 mm, which is equal to the wavelength of the RTD emitter, was achieved. The signal-to-noise ratio (SNR) of the reflection image was improved by 6 dB by using polarization optics that red
We propose a novel quantum-well (QW) structure for GaInNAs-GaAs lasers that can emit 1.3 μm or longer wavelength light. The idea is insertion of lattice-matched GaInNAs intermediate layers between well and barrier, which is effective for elongating the emission wavelength and reducing well thickness. It is shown that 1.3-μm emission is achievable by using the proposed GaInNAs-GaAs QW with a well thickness thinner than that of conventional rectangular GaInNAs QWs. This structure will relax the de
The power transmission technology to the equipment is remained behind in contrast to the progress of wireless communication. The existence of wiring and its connections greatly restrict the location of use, installation, maintenance, and configuration of the equipment. Solutions of wireless power transmission may lead to major changes in society, such as new services and new industries as well as convenience. Wireless power transmission such as electromagnetic induction is beginning to be put in
This is the first report on chemical beam epitaxy (CBE) of GaInNAs/GaAs quantum wells (QWs). From the observed clear X-ray diffraction satellite peaks, the QW structure incorporating nitrogen supplied by radical nitrogen was successfully grown. The photoluminescence emission with the emission peak wavelength of 1.0 µm was observed from GaInNAs/GaAs QWs at room temperature. The wavelength could be elongated by increasing the amount of nitrogen and indium.
This paper is an experimental characterization of a light-receiving module containing a fly-eye lens system with high tolerance to beam irradiation conditions. The fly-eye lens system, which is tolerant to fluctuations in beam shape, beam size, number of beams, beam incident position, and beam incident direction, was proposed, a light receiver module with a fly-eye lens system was constructed, and its characteristics were evaluated. The effect of the beam size on the fly-eye lens system was eval
