Rabi resonance splitting phenomena in photonic integrated circuits

Realizing optical analogues of quantum phenomena in atomic, molecular, or condensed matter physics has underpinned a range of photonic technologies. Rabi splitting is a quantum phenomenon induced by a strong interaction between two quantum states, and its optical analogues are of fundamental importance for the manipulation of light-matter interactions with wide applications in optoelectronics and nonlinear optics. Here, we propose and theoretically investigate purely optical analogues of Rabi splitting in integrated waveguide-coupled resonators formed by two Sagnac interferometers. By tailoring the coherent mode interference, the spectral response of the devices is engineered to achieve optical analogues of Rabi splitting with anti-crossing behavior in the resonances. Transitions between the Lorentzian, Fano, and Rabi splitting spectral lineshapes are achieved by simply changing the phase shift along the waveguide connecting the two Sagnac interferometers, revealing interesting physical insights about the evolution of different optical analogues of quantum phenomena. The impact of the device structural parameters is also analyzed to facilitate device design and optimization. These results suggest a new way for realizing optical analogues of Rabi splitting based on integrated waveguide-coupled resonators, paving the way for many potential applications that manipulate light-matter interactions in the strong coupling regime.Comment: 28 pages, 8 figures, 184 reference

Air Force Institute of Technology Research Report 2013

This report summarizes the research activities of the Air Force Institute of Technology’s Graduate School of Engineering and Management. It describes research interests and faculty expertise; lists student theses/dissertations; identifies research sponsors and contributions; and outlines the procedures for contacting the school. Included in the report are: faculty publications, conference presentations, consultations, and funded research projects. Research was conducted in the areas of Aeronautical and Astronautical Engineering, Electrical Engineering and Electro-Optics, Computer Engineering and Computer Science, Systems Engineering and Management, Operational Sciences, Mathematics, Statistics and Engineering Physics

Air Force Institute of Technology Research Report 2014

This report summarizes the research activities of the Air Force Institute of Technology’s Graduate School of Engineering and Management. It describes research interests and faculty expertise; lists student theses/dissertations; identifies research sponsors and contributions; and outlines the procedures for contacting the school. Included in the report are: faculty publications, conference presentations, consultations, and funded research projects. Research was conducted in the areas of Aeronautical and Astronautical Engineering, Electrical Engineering and Electro-Optics, Computer Engineering and Computer Science, Systems Engineering and Management, Operational Sciences, Mathematics, Statistics and Engineering Physics

Air Force Institute of Technology Research Report 2020

This Research Report presents the FY20 research statistics and contributions of the Graduate School of Engineering and Management (EN) at AFIT. AFIT research interests and faculty expertise cover a broad spectrum of technical areas related to USAF needs, as reflected by the range of topics addressed in the faculty and student publications listed in this report. In most cases, the research work reported herein is directly sponsored by one or more USAF or DOD agencies. AFIT welcomes the opportunity to conduct research on additional topics of interest to the USAF, DOD, and other federal organizations when adequate manpower and financial resources are available and/or provided by a sponsor. In addition, AFIT provides research collaboration and technology transfer benefits to the public through Cooperative Research and Development Agreements (CRADAs). Interested individuals may discuss ideas for new research collaborations, potential CRADAs, or research proposals with individual faculty using the contact information in this document

Air Force Institute of Technology Research Report 2009

This report summarizes the research activities of the Air Force Institute of Technology’s Graduate School of Engineering and Management. It describes research interests and faculty expertise; lists student theses/dissertations; identifies research sponsors and contributions; and outlines the procedures for contacting the school. Included in the report are: faculty publications, conference presentations, consultations, and funded research projects. Research was conducted in the areas of Aeronautical and Astronautical Engineering, Electrical Engineering and Electro-Optics, Computer Engineering and Computer Science, Systems and Engineering Management, Operational Sciences, Mathematics, Statistics and Engineering Physics

Developing opto-acoustic microscopy instruments for biomedical imaging applications

Opto-acoustic Microscopy is an emerging technique for cross-sectional imaging that provides structural and functional volumetric information with micrometer resolution. This allows for non-invasive detection of endogenous contrast agents and chromophores without using ionizing radiation. The objective of this thesis is to investigate the potential of opto-acoustic microscopy combined with optical coherence tomography in developing advanced diagnostic tools for biomedical applications, in particular for cancer diagnosis. To achieve this objective, the thesis focuses on in-vivo multi-spectral optoacoustic microscopy imaging of multiple endogenous contrast agents in Xenopus laevis. The study used a high-resolution opto-acoustic microscopy instrument capable of multi-pectral imaging covering two octaves of the spectrum, and a novel technique to distinguish between different chromophores in the sample. An optical coherence tomography instrument was integrated in the opto-acoustic microscopy system to guide imaging and provide reliable structural information. Additionally, visible light optical coherence tomography system was developed as an ultra-high resolution alternative. Prior to this study, mapping of lipids in Xenopus laevis was achieved using an in-house all-fibre supercontinuum optical source developed in DTU, Denmark operating in the extended near-infrared region. Both opto-acoustic microscopy and optical coherence tomography instruments are capable of acquiring cross-sectional and volumetric images in real-time. Finally, a high-resolution opto-acoustic microscopy set-up to explore the impact of picosecond pulse duration excitation on the axial resolution of the imaging system. The study compared a picosecond pulse duration laser-based optoacoustic microscopy instrument to a nanosecond laser-based one in terms of axial resolution and obtained unprecedented in-vivo images of the brain in Xenopus laevis tadpoles