Kyoto University · 물리·천문학
Kōichiro Tanaka 교수의 연구실은 2차원 물질인 그래핀의 비선형 광학 특성과 고조파 발현을 중심으로 연구를 진행하고 있습니다. 특히 중인프러레드 레이저를 이용한 고조파 발현 메커니즘과 전자 운동의 양자역학적 기초를 규명하며, 비선형 광학적 성질의 기초 이론과 응용을 탐구하고 있습니다. 또한, 태양광 및 탄소 기반 나노소재를 활용한 비선형 광학 장치 개발에도 관심을 기울이고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
The electronic properties of graphene can give rise to a range of nonlinear optical responses. One of the most desirable nonlinear optical processes is high-harmonic generation (HHG) originating from coherent electron motion induced by an intense light field. Here, we report on the observation of up to ninth-order harmonics in graphene excited by mid-infrared laser pulses at room temperature. The HHG in graphene is enhanced by an elliptically polarized laser excitation, and the resultant harmoni
We present a review of the recent progress in the generation methods of intense terahertz (THz) single-cycle pulses and their application to THz nonlinear spectroscopy in condensed matters. Special attentions are paid to various aspects of nonlinearity in semiconductors including dynamical Franz-Keldysh effect, ballistic acceleration of free carriers, and coherent control of the exciton system.
The in vitro production of human interleukin 1 alpha (hIL 1 alpha) and interleukin 1 beta (hIL 1 beta) by peripheral blood mononuclear cells was examined by sensitive sandwich enzyme immunoassays which could discriminate hIL 1 alpha and hIL 1 beta without cross-reaction with human IL2. In culture supernatants of mononuclear cells, two components were detected by sandwich enzyme immunoassay for hIL 1 alpha or hIL 1 beta. The molecular weight of one component was shown to be equal to that of recom
