Tuesday, 3 May 2011 - CLEO

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Room 315 Room 316 Room 317 CLEO: Science & Innovations CLEO: QELS- Fundamental Science CLEO: Applications & Technology 13:45–15:30 CTuO • Ultrafast Pulse Characterization David Gaudiosi, Raydiance, Inc., USA, Presider 13:45–15:30 QTuJ • Quantum Measurement and Metrology Shengwang Du, The Hong Kong Univ. of Science and Technology, Hong Kong, Presider 13:45–15:30 ATuD • Applications of Mid-UV LEDs Remis Gaska, Sensor Electronic Technology, Inc., USA, Presider CTuO1 • 13:45 Invited Characterizing Ultrashort Pulses One Photon at a Time, Osip Schwartz 1 , Oren Raz 1 , Ori Katz 1 , Nirit Dudovich 1 , Dan Oron 1 ; 1 Physics of Complex Systems, Weizmann Inst. of Science, Israel. A linear self-referenced technique for temporal characterization of ultraweak pulse trains is presented. Shot-noise limited time-resolved single photon detection enables temporal resolution down to 10fs for pulse trains with ~1 photon per pulse. QTuJ1 • 13:45 Quantum-Light-Enhanced Optical Magnetometry, Florian Wolfgramm 1 , Alessandro Cere 1 , Yannick A. de Icaza Astiz 1 , Federica A. Beduini 1 , Ana Predojevic 1 , Marco Koschorreck 1 , Morgan W. Mitchell 1 ; 1 ICFO - The Inst. of Photonic Sciences, Spain. We demonstrate a light-shot-noise-limited magnetometer based on the Faraday effect in a hot unpolarized ensemble of rubidium atoms. By using off-resonant, polarization-squeezed probe light, we improve the sensitivity of the magnetometer by 3.2 dB. ATuD1 • 13:45 Tutorial Water and Air Treatment Using Ultraviolet Light Sources, Gordon Knight 1 ; 1 Research, Trojan Technologies, Canada. Advances in production of novel UV light sources is reviewed. The use of these devices for air and water purification is described, along with necessary validation procedures for verifying the operation of water disinfection systems. CTuO2 • 14:15 Measurement of Energy Contrast of Amplified Ultrashort Pulses using Cross Polarized Wave Generation and Spectral Interferometry, Marin Iliev 1 , Amanda K. Meier 1 , Daniel E. Adams 1,2 , Jeff A. Squier 1 , Charles G. Durfee 1 ; 1 Physics, Colorado School of Mines, USA; 2 Physics, Univ. of Colorado, Boulder, USA. We interfere an amplified output pulse with a copy that has been converted using third-order cross-polarized wave generation. The ASE pedestal shows as a background in the interference, yielding the short-pulse/ASE energy contrast. CTuO3 • 14:30 Self-referenced spectral interferometry in the UV domain, Stéphanie Grabielle 1,2 , Sébastien Coudreau 1 , Vincent Crozatier 1 , Nicolas Forget 1 , Fabien Lepetit 2 , Olivier Gobert 2 , Thomas Oksenhendler 1 ; 1 FASTLITE, France; 2 IRAMIS, Service Photons Atomes & Molécules, CEA, France. Self-referenced spectral interferometry based on Cross-polarized wave generation is experimentally demonstrated on UV pulses at 400 and 266nm. Specific problems are discussed including multiple pulse measurement, dynamic limitation, temporal range. QTuJ2 • 14:00 Interaction-based quantum metrology giving a scaling beyond the Heisenberg limit, Mario Napolitano 1 , Marco Koschorreck 1,2 , Brice Dubost 1,3 , Naeimeh Behbood 1 , Robert J. Sewell 1 , Morgan W. Mitchell 1 ; 1 Quantum Optics Group, ICFO-Inst. of Photonic Sciences, Spain; 2 Department of Physics, Univ. of Cambridge, UK; 3 Laboratoire Matriaux et Penomenes Quantiques, Universite Paris Diderot, France. Atom-mediated optical nonlinearities, generated within an atom-light quantum interface, allow spin measurement with sensitivity that scales better than the Heisenberg limit. This demonstrates interactions as a new resource for quantum metrology. QTuJ3 • 14:15 Invited Quantum Sensors, Computing, Metrology, and Imaging, Jonathan P. Dowling 1 ; 1 Inst. for Theoretical Physics, Lousiana State Univ., USA. Quantum states of light can be used to make measurements and produce images beyond classical limits. We review recent advances in producing such states of light using ideas from optical quantum computing. Gordon Knight is currently a Research Manager and Photonics leader at Trojan Technologies. Trojan Technologies is a world leader in water disinfection technology using ultraviolet light. Responsibilities include developing new light sources and sensors for UV light, and adapting them for use in commercial products. Bachelor’s, Master’s and PhD. Degrees were obtained in the field of Chemistry at the Univ. of Waterloo, with specialization in laser chemistry. He then joined Bell-Northern Research, becoming a Senior Scientist in materials research and design of high speed lasers and detectors for fiber optics communication systems. He is a current member of the Ontario Photonics Technology Industry Cluster (OPTIC), the Chemical Inst. of Canada (CIC) and the Optical Society of America. He is the author of many published papers in the field of optical materials and devices, as well as light sources for water treatment, and holds many patents in both fields. Tuesday, 3 May Concurrent sessions are grouped across four pages. Please review all four pages for complete session information. 105
Room 327 Room 336 Room 337 Room 338 CLEO: Science & Innovations CLEO: Applications & Technology CLEO: QELS- Fundamental Science CLEO: Science & Innovations 13:45–15:30 CTuP • Novel Semiconductor Lasers Fumio Koyama, Tokyo Inst. of Technology, Japan, Presider 13:45–15:30 ATuE • Sensors and Imaging for Scientific and Security Applications Emma Springate, Rutherford Appleton Lab (Artemis), UK, Presider 13:45–15:30 QTuK • Optical Processes in Graphene Junichiro Kono, Rice Univ., USA, Presider 13:45–15:30 CTuQ • Ultrafast and Broadband Nonlinear Optics Andrew Schober, Lockheed Martin Coherent Technologies, USA, Presider CTuP1 • 13:45 High-Power BCB Encapsulated VCSELs based on InP, Tobias Gruendl 1 , Michael Mueller 1 , Kathrin Geiger 1 , Christian Grasse 1 , Gerhard Boehm 1 , Ralf Meyer 1 , Markus C. Amann 1 ; 1 Walter Schottky Institut, Technische Universitaet Muenchen, Germany. The high temperature behavior of short cavity InP based VCSEL devices with 5.5 µm apertures is presented. They show record optical output powers and SMSRs beyond 50 dB over the whole temperature range. ATuE1 • 13:45 An Ultra-sensitive DC and AC Accelerometer Using Dual Superluminal Zero-Area L-shaped Ring Lasers, Selim M. Shahriar 1 , Shih Tseng 1 , Joshua Yablon 1 , Honam Yum 1 ; 1 Northwestern Univ., USA. We show that a pair of zero-area superluminal ring lasers, each configured in an L-shape, can perform as an ultrasensitive DC and AC accelerometer, with sensitivity as small as 10 pico-g/root-Hz, and high dynamic range QTuK1 • 13:45 Very Slow Carrier Cooling in Graphene Measured by Optical/THz Pump-Probe Spectroscopy, Jared Strait 1 , Haining Wang 1 , Shriram Shivaraman 1 , Virgil Shields 1 , Michael Spencer 1 , Farhan Rana 1 ; 1 Electrical and Computer Engineering, Cornell Univ., USA. We present results on the relaxation dynamics of excited carriers in graphene by optical/THz pump-probe spectroscopy. Our data indicates that carrier cooling is very slow at low temperatures where optical phonon emission becomes inefficient. CTuQ1 • 13:45 Invited Liquid Crystals Nonlinear Optics - CW to Femtoseconds All-Optical Signal Processing, Iam Choon Khoo 1 ; 1 Electrical Engineering, Pennsylvania State Univ., USA. We present an overview of recent results obtained in pure and nano-dopant modified liquid crystals which possess large ultrafast nonlinear nonlinearities for all-optical processing with lasers of wide ranging temporal and spectral characteristics. CTuP2 • 14:00 Tailored Intensity Distributions with Vertical- Cavity Surface-Emitting Laser Systems, Stephan Gronenborn 1 , Holger Moench 2 , Michael Miller 3 , Peter Loosen 1 ; 1 Chair of Optical Systems Technologies, RWTH Aachen, Germany; 2 Philips Research Laboratories, Germany; 3 Philips Technologie GmbH U-L-M Photonics, Germany. Robust top-hat laser beams with a large degree of freedom of the outer shape and scalable in optical power are realised by laser modules consisting of surface-emitting laser diodes (VCSELs) and a simple optic. ATuE2 • 14:00 Demonstration of a DMD-based Compressive Sensing (CS) Spectral Imaging System, Yuehao Wu 1 , Iftekhar Mirza 1 , Gonzalo Arce 1 , Dennis Prather 1 ; 1 Electrical and Computer Engineering, Univ. of Delaware, USA. We present a DMD-based spectral imaging system, which uses a DMD to impose CS measurements on the spatial/spectral information of the imaging scene. The original spatial/spectral information can be reconstructed from the CS measurements numerically. QTuK2 • 14:00 Diffusion and energy relaxation of hot carriers in grapheme, Brian Ruzicka 1 , Lalani K. Werake 1 , Nardeep Kumar 1 , Shuai Wang 2 , Kian Ping Loh 2 , Hui Zhao 1 ; 1 Univ. of Kansas, USA; 2 National Univ. of Singapore, Singapore. Diffusion and energy relaxation of hot carriers in graphene are studied by high-resolution pump-probe techniques. Diffusion coefficients, energy relaxation rates and optical phonon emissions time are determined. Tuesday, 3 May CTuP3 • 14:15 Drive-Current Tuning of Self-Oscillation Frequency of External Cavity VCSEL, Clinton J. Smith 1 , Wen-Di Li 1 , Gerard Wysocki 1 , Stephen Y. Chou 1 ; 1 Electrical Engineering, Princeton Univ., USA. We demonstrated the tuning of the self-oscillation frequency of an external cavity VCSEL using drive current. This frequency tuning occurs for all cavity lengths constructed; however, the degree of frequency tuning correlates with cavity length. ATuE3 • 14:15 An integrated, noninvasive, fiber optic sensor for electric and magnetic field measurement applications, Anthony Garzarella 1 , Dong Ho Wu 1 ; 1 Naval Research Lab, USA. We describe a ruggedized, nonmetallic, fiber optic sensor utilizing nonlinear crystals for measurements of electric and magnetic fields. Extensive field test results in a variety of RF sources (from dc to 20 GHz) are reported. QTuK3 • 14:15 Observation of the relativistic response of an electron-hole plasma in graphene on femtosecond timescales, Keshav M. Dani 1 , Jinho Lee 1 , Rishi Sharma 2 , Aditya Mohite 1 , Charu C. Galande 3 , Pulickel M. Ajayan 3 , Andrew M. Dattelbaum 1 , Han Htoon 1 , Antoinette J. Taylor 1 , Rohit P. Prasankumar 1 ; 1 Center for Integrated Nanotechnologies, Los Alamos National Lab, USA; 2 Theoretical Division, Los Alamos National Lab, USA; 3 Department of Mechanical Engineering and Materials Science, Rice Univ., USA. Visible pump-probe spectroscopy isolates the femtosecond Drude response of a photogenerated electron-hole plasma in monolayer graphene. The observed nonlinear scaling versus carrier density reveals the relativistic nature of the electron-hole plasma. CTuQ2 • 14:15 Supercontinuum Generation near 2 μm in Periodically Poled Lithium Niobate Waveguides, Christopher Phillips 1 , Carsten Langrock 1 , Martin M. Fejer 1 , Jie Jiang 2 , Ingmar Hartl 2 , Martin E. Fermann 2 ; 1 Stanford Univ., USA; 2 IMRA America, Inc., USA. We demonstrate spectral broadening and self-frequency-shift around 2-μm wavelengths in periodically poled LiNbO 3 waveguides, in agreement with simulations. We show numerically that octave-spanning spectra can be achieved with 6 nJ of pulse energy. CTuP4 • 14:30 Long-wavelength (λ≈ 14 µm) Quantum Cascade Lasers with Low Threshold and High Characteristic Temperature (~ 300 K), Xue Huang 1 , William O. Charles 1 , Claire F. Gmachl 1 ; 1 Princeton Univ., USA. We demonstrate a high-performance Quantum Cascade laser at ~ 14 µm wavelength. It shows a low threshold current density of 2.1 kA/ cm 2 at 300 K and high characteristic temperature of 309 K around room temperature. ATuE4 • 14:30 Explosive Sensing using Multiple-Excitation- Wavelength Resonance-Raman Scattering, Balakishore Yellampelle 1 , Mikhail Sluch 1 , Sanford Asher 2 , Brian Lemoff 1 ; 1 Advanced Technology Group, WVHTC Foundation, USA; 2 Department of Chemistry, Univ. of Pittsburgh, USA. We have developed a new technique that uses Raman spectra obtained from multiple DUV excitation wavelengths for explosive detection. The strong dependence on excitation wavelength of the Raman signal provides a unique signature improving specificity. QTuK4 • 14:30 Interlayer Electronic Coupling Observed by Polarization Dependent Coherently Controlled Photocurrent Generation in Multilayer Epitaxial Graphene, Dong Sun 1 , Julien Rioux 2 , J. E. Sipe 2 , Claire Berger 3 , Walt De Heer 3 , Theodore Norris 1 ; 1 Center for Ultrafast Optical Science, Univ. of Michigan, USA; 2 Department of Physics and Inst. for Optical Science, Univ. of Toronto, Canada; 3 School of Physics, Georgia Inst. of Technology, USA. We measured the third order nonlinear tensor in epitaxial graphene by studying coherently controlled photocurrent direction as function of pump light polarization. The measured tensor element indicates the presence of interlayer electronic coupling. CTuQ3 • 14:30 Wideband Supercontinuum Generation in Tapered Tellurite Microstructured Fibers, Yasutake Ohishi 1 , Guanshi Qin 1,2 , Xin Yan 1 , Meisong Liao 1 , Atsushi Mori 3 , Takenobu Suzuki 1 ; 1 Research Center for Advanced Photon Technology, Toyota Technological Inst., Japan; 2 Jilin Univ., China; 3 NTT, Japan. Enhanced soliton trapping of dispersive waves in a tapered tellurite microstructured fiber pumped by a 1557 nm femtosecond laser is demonstrated. The short wavelength edge of supercontinuum light is extended from 960 to 600 nm. 106 CLEO: 2011 • 1–6 May 2011
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Tuesday, 3 May 2011 - CLEO

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