Browsing by Title

Now showing items 98115-98134 of 142671

    • Photon-induced tunneling in graphene-boron nitride-graphene heterostructures 

      Nair, Nityan (Massachusetts Institute of Technology, 2013)
      Graphene is a material that has generated much interest due to its many unique electronic and optical properties. In this work, we present optoelectronic measurements performed on ultrathin graphene-boron nitride-graphene ...

    • Photon-limited time of flight depth acquisition : new parametric model and its analysis 

      Montazerhodjat, Vahid (Massachusetts Institute of Technology, 2013)
      As 3-D imaging systems become more popular, the depth estimation which is their core component should be made as accurate as possible at low power levels. In this thesis, we consider the time of flight depth acquisition ...

    • Photon-photon interactions in dynamically coupled cavities 

      Heuck, Mikkel; Englund, Dirk R. (American Physical Society (APS), 2020-04)
      We study theoretically the interaction between two photons in a nonlinear cavity. The photons are absorbed into the cavity by an effective tuning of its input-output coupling via external control of a coupling to a second, ...

    • A photon-photon interface with an atomic ensemble in an optical cavity 

      Beck, Kristin M. (Kristin Marie) (Massachusetts Institute of Technology, 2016)
      Since the emergence of quantum computing as a field, interactions between two-level systems that can carry quantum information have been conceptualized in terms of quantum devices. Here, I demonstrate four such devices for ...

    • A Photonic Band Gap Resonator Gyrotron 

      Sirigiri, J.R.; Kreischer, K.E.; Machuzak, J.; Mastovsky, I.; Shapiro, M.A.; e.a. (MIT Plasma Science and Fusion Center, 2001-05-16)

    • Photonic band gap structures for superconducting radio-frequency particle accelerators 

      Arsenyev, Sergey A (Massachusetts Institute of Technology, 2016)
      This thesis presents the design and testing of the first multi-cell superconducting accelerating cavity with a photonic band gap (PBG) coupler cell. The structure serves as a building block for superconducting radio-frequency ...

    • Photonic band structure of two-dimensional atomic lattices 

      Borregaard, J.; Chang, D. E.; Pichler, H.; Yelin, S. F.; Zoller, P.; e.a. (American Physical Society, 2017-12)
      Two-dimensional atomic arrays exhibit a number of intriguing quantum optical phenomena, including subradiance, nearly perfect reflection of radiation, and long-lived topological edge states. Studies of emission and scattering ...

    • Photonic bandgap fibers for transmitting high peak-power pulses in the near infrared 

      Ruff, Zachary (Massachusetts Institute of Technology, 2010)
      Hollow-core photonic bandgap fibers (PBG) offer the opportunity to suppress highly the optical absorption and nonlinearities of their constituent materials, which makes them viable candidates for transmitting high-peak ...

    • Photonic Boson Sampling in a Tunable Circuit 

      Dove, Justin Michael; Aaronson, Scott; Broome, Matthew A.; Fedrizzi, Alessandro; Rahimi-Keshari, Saleh; e.a. (American Association for the Advancement of Science (AAAS), 2012-12)
      Quantum computers are unnecessary for exponentially efficient computation or simulation if the Extended Church-Turing thesis is correct. The thesis would be strongly contradicted by physical devices that efficiently perform ...

    • Photonic crystal cavity with self-similar structure and single-photon Kerr nonlinearities 

      Choi, Hyeongrak (Massachusetts Institute of Technology, 2017)
      We propose a design of photonic crystal cavity with self-similar electromagnetic boundary conditions, that achieve ultrasmall mode volume (Vff). The electric energy density of a cavity mode can be maximized in the air or ...

    • Photonic Crystal Enabled Thermophotovoltaics for a Portable Microgenerator 

      Chan, Walker R; Waits, Christopher M; Stelmakh, Veronika; Soljacic, Marin; Joannopoulos, John; e.a. (IOP Publishing, 2015-12)
      This work presents the design and characterization of a first-of-a-kind millimeter- scale thermophotovoltaic (TPV) system using a metallic microburner, photonic crystal emitter, and low-bandgap photovoltaic (PV) cells. In ...

    • Photonic crystal enabled THz sources and one-way waveguides 

      Chong, Y.; Abad, J. B.; Soljacic, Marin; Johnson, Steven G; Joannopoulos, John; e.a. (Society of Photo-Optical Instrumentation Engineers (SPIE), 2010-08)
      We present two photonic crystal enabled platforms, exhibiting novel active optical phenomena. First, using a detailed theoretical and numerical analysis, we show how a Purcell-effect inspired nonlinear nanophotonic scheme ...

    • Photonic crystal enhanced LED for electroluminescence cooling 

      Li, Zheng, Ph. D. Massachusetts Institute of Technology (Massachusetts Institute of Technology, 2017)
      An light-emitting diode (LED) consumes low-entropy electrical power and emits incoherent photons. In this process, the lattice heat also contributes to the output power if the LED operates at voltages below the photon ...

    • Photonic crystals : from theory to practice 

      Johnson, Steven G., 1973- (Massachusetts Institute of Technology, 2001)
      In this thesis, we explore the design, computation, and analysis of photonic crystals, with a special emphasis on structures and devices that make a connection with practically realizable systems. First, we analyze the ...

    • Photonic crystals : theory and device applications 

      Fan, Shanhui, 1972- (Massachusetts Institute of Technology, 1997)

    • Photonic crystals for high temperature applications 

      Yeng, Yi Xiang (Massachusetts Institute of Technology, 2014)
      This thesis focuses on the design, optimization, fabrication, and experimental realization of metallic photonic crystals (MPhCs) for high temperature applications, for instance thermophotovoltaic (TPV) energy conversion ...

    • Photonic Crystals: Numerical Predictions of Manufacturable Dielectric Composite Architectures 

      Carter, W. Craig.; Maldovan, Martin.; Maskaly, Karlene. (2004-01)
      Photonic properties depend on both dielectric contrast in a microscopic composite and the arrangement of the microstructural components. No theory exists for direct prediction of photonic properties, and so progress relies ...

    • Photonic crystals: shaping the flow of thermal radiation 

      Ghebrebrhan, Michael; Yeng, YiXiang; Kassakian, John G.; Soljacic, Marin; Celanovic, Ivan L.; e.a. (Cambridge University Press, 2011-01)
      In this paper we explore theory, design, and fabrication of photonic crystal (PhC) based selective thermal emitters. In particular, we focus on tailoring spectral and spatial properties by means of resonant enhancement in ...

    • Photonic density of states of two-dimensional quasicrystalline photonic structures 

      Jia, Lin; Bita, Ion; Thomas, Edwin L. (American Physical Society, 2011-08)
      A large photonic band gap (PBG) is highly favorable for photonic crystal devices. One of the most important goals of PBG materials research is identifying structural design strategies for maximizing the gap size. We provide ...

    • Photonic Device Layout Within the Foundry CMOS Design Environment 

      Orcutt, Jason Scott; Ram, Rajeev J. (Institute of Electrical and Electronics Engineers, 2010-03)
      A design methodology to layout photonic devices within standard electronic complementary metal-oxide-semiconductor (CMOS) foundry data preparation flows is described. This platform has enabled the fabrication of designs ...