Now showing items 1-17 of 17

    • Advanced photonic methodologies for the 'in vitro' manipulation of cellular systems 

      McDougall, Craig (University of St Andrews, 2011) - Thesis
      This thesis investigates the application of a variety of optical techniques for the manipulation of single cells and their local micro-environment. The methodologies developed provide enhanced control over a single cell ...
    • All-optical manipulation of photonic membranes 

      Kirkpatrick, Blair Connell (University of St Andrews, 2017-06-21) - Thesis
      Optical tweezers have allowed us to harness the momentum of light to trap, move, and manipulate microscopic particles with Angstrom-level precision. Position and force feedback systems grant us the ability to feel the ...
    • Bioabsorbable polymer optical waveguides for deep-tissue photomedicine 

      Nizamoglu, Sedat; Gather, Malte Christian; Humar, Matjaž; Choi, Myunghwan; Kim, Seonghoon; Kim, Ki Su; Hahn, Sei Kwang; Scarcelli, Giuliano; Randolph, Mark; Redmond, Robert W.; Yun, Seok Hyun (2016-01-19) - Journal article
      Advances in photonics have stimulated significant progress in medicine, with many techniques now in routine clinical use. However, the finite depth of light penetration in tissue is a serious constraint to clinical utility. ...
    • Coherent polariton laser 

      Kim, Seonghoon; Zhang, Bo; Wang, Zhaorong; Fischer, Julian; Brodbeck, Sebastian; Kamp, Martin; Schneider, Christian; Höfling, Sven; Deng, Hui (2016-03-11) - Journal article
      The semiconductor polariton laser promises a new source of coherent light, which, compared to conventional semiconductor photon lasers, has input-energy threshold orders of magnitude lower. However, intensity stability, a ...
    • Directional organic light-emitting diodes using photonic microstructure 

      Zhang, Shuyu (University of St Andrews, 2014-05-19) - Thesis
      This thesis describes investigations into the optical and device design of organic light-emitting diodes (OLEDs) with the aim of exploring the factors controlling the spatial emission pattern of OLEDs and developing novel ...
    • Electrically tunable single-photon source triggered by a monolithically integrated quantum dot microlaser 

      Munnelly, Pierce; Heindel, Tobias; Thoma, Alexander; Kamp, Martin; Höfling, Sven; Schneider, Christian; Reitzenstein, Stephan (2017-04-19) - Journal article
      We report on a quantum dot micropillar-based single-photon source demonstrating tunable emission energy via an applied electric field and driven by an on-chip, high-β, whispering-gallery-mode microlaser. The cavity-enhanced ...
    • Electroluminescence from spatially confined exciton polaritons in a textured microcavity 

      Winkler, K.; Schneider, C.; Fischer, J.; Rahimi-Iman, A.; Amthor, M.; Forchel, A.; Reitzenstein, S.; Höfling, Sven; Kamp, M. (2013-01-28) - Journal article
      We report on the formation of spatially confined exciton-polaritons under electrical injection in a textured microcavity. The trapping of polaritons in the diode sample is achieved through a locally elongated GaAs microcavity ...
    • Interference-free superposition of nonzero order light modes : Functionalized optical landscapes 

      Cizmar, Tomas; Dalgarno, Heather Isla Campbell; Ashok, Praveen Cheriyan; Gunn-Moore, Frank J; Dholakia, Kishan (2011-02) - Journal article
      In this paper, we utilize the incoherent superposition of nonzero order light modes. We show that this approach brings an additional degree of freedom to the generation of optical fields and notably the formation of ...
    • Light management in optoelectronic devices 

      Martins, Emiliano (University of St Andrews, 2014-06-25) - Thesis
      This thesis presents studies on light management in optoelectronic devices. The broad aim of the thesis is to improve the efficiency of optoelectronic devices by optimised light usage. The studies emphasise the design and ...
    • Living lasers : lasing from biological and biocompatible soft matter 

      Karl, Markus (University of St Andrews, 2018-12-06) - Thesis
      In recent years, the study of stimulated emission from and by biological systems has gained wide spread attention as a promising technology platform for novel biointegrated laser. However, the photonic properties and the ...
    • Measurement and application of optical nonlinearities in indium phosphide, cadmium mercury telluride and photonic crystal fibres 

      Sloanes, Trefor J. (University of St Andrews, 2009-11-30) - Thesis
      The two-photon absorption (TPA) coefficient is measured in indium phosphide (InP) using femtosecond pulses to be 45cm/GW at 1.32μm. Nanosecond pulses are subsequently used to find the free-carrier refractive index ...
    • Negative frequency waves in optics : control and investigation of their generation and evolution 

      McLenaghan, Joanna Siân (University of St Andrews, 2014-06-25) - Thesis
      This thesis is concerned with various methods for the control and investigation of pulse dynamics in a Photonic Crystal Fibre (PCF) and of the radiation driven by a short pulse. In particular the focus is on pulses in ...
    • One- and two-photon pumped organic semiconductor lasers 

      Tsiminis, Georgios (University of St Andrews, 2010) - Thesis
      This thesis describes a number of studies on organic semiconductors focused around using them as gain media for lasers. The photophysical properties of organic semiconductors are studied using a wide range of ...
    • Optical eigenmodes for illumination & imaging 

      Kosmeier, Sebastian (University of St Andrews, 2013-06-26) - Thesis
      This thesis exploits so called “Optical Eigenmodes” (OEi) in the focal plane of an optical system. The concept of OEi is introduced and the OEi operator approach is outlined, for which quadratic measures of the light field ...
    • Photonic crystal interfaces: a design-driven approach 

      Ayre, Melanie (University of St Andrews, 2006-06) - Thesis
      Photonic Crystal structures have been heralded as a disruptive technology for the miniaturization of opto-electronic devices, offering as they do the possibility of guiding and manipulating light in sub-micron scale ...
    • Propagation loss in slow light photonic crystal waveguides 

      Schulz, Sebastian Andreas (University of St Andrews, 2012-06-20) - Thesis
      The field of nanophotonics is a major research topic, as it offers potential solutions to important challenges, such as the creation of low power, high bandwidth interconnects or optical sensors. Within ...
    • A pulsed nonclassical light source driven by an integrated electrically triggered quantum dot microlaser 

      Munnelly, P.; Heindel, T.; Karow, M.M.; Höfling, S.; Kamp, M.; Schneider, C.; Reitzenstein, S. (2015-11) - Journal article
      We present a novel compact nanophotonic device consisting of a nonclassical light source excited by a monolithically integrated and electrically driven quantum dot (QD) microlaser. Our device concept is based on self-assembled ...