Monday, June 1, 2009 - CLEO

Rooms 318-320 Rooms 321-323 Rooms 324-326 Room 314CLEOIQECCML • fs Fiber Oscillators II—ContinuedCMM • Polarization Effects inNitride LEDs—ContinuedCMN • 10 Years of FrequencyCombs CLEO Symposium II—ContinuedIMD • Plasmonic Antennas andDevices—ContinuedCML5 • 11:15 a.m.Ultrafast Erbium-Doped Fiber Laser Mode-Locked by a Carbon Nanotube SaturableAbsorber, Zhipei Sun, Alex G. Rozhin, FengqiuWang, William Milne, Richard V. Penty, Ian H.White, Andrea C. Ferrari; Univ. of Cambridge,UK. We demonstrate an ultrafast stretched-pulsefiber laser mode-locked by a carbon nanotubebased saturable absorber. 123 fs pulses at 1.56μm are generated with an output spectral widthof 32 nm.CMM2 • 11:15 a.m.Light Emission Polarization Properties ofA-Plane InGaN/GaN Quantum Wells LightEmitting Diodes, Hung-Hsun Huang, Yuh-RennWu; Inst. of Photonics and Optoelectronics andDept. of Electrical Engineering, Natl. Taiwan Univ.,Taiwan. We study the optical characteristics ofnonpolar a-plane InGaN/GaN quantum wells.The larger indium composition and the smallerwell width enhance the light polarization ratio.However, the polarization ratio decreases as thecarrier injection increases.CMN5 • 11:15 a.m.Quantum-Limited Comb Lineshape and FrequencyUncertainty, Jared K. Wahlstrand 1 , JohnT. Willits 1,2 , Curtis R. Menyuk 1,3 , Steven T. Cundiff 1 ;1JILA, USA, 2 Univ. of Colorado, USA, 3 Univ. ofMaryland, Baltimore County, USA. We calculatethe noise properties of a femtosecond frequencycomb from experimentally-derived parameters.Using a simple model for a feedback system, wecalculate the phase noise spectrum for comb linesacross the laser spectrum.IMD5 • 11:15 a.m.Directing Optical Emission Using a Yagi-UdaAntenna Composed of a Finite Linear Arrayof Gold Nanorods, Terukazu Kosako, HolgerF. Hofmann, Yutaka Kadoya; Hiroshima Univ.,Japan. We present the realization of a Yagi-Udaantenna array for the optical frequency regimemade of gold nanorods. The results suggest thatthe optical antenna can be used to direct theemission of light.CML6 • 11:30 a.m.147 fs, 51 MHz Soliton Fiber Laser at 1.56 μmwith a Fiber-Connector-Type SWNT/P3HTSaturable Absorber, Fumio Shohda 1 , TakafumiShirato 1 , Masataka Nakazawa 1 , Junji Mata 2 , JunTsukamoto 2 ; 1 Res. Inst. of Electrical Communication,Tohoku Univ., Japan, 2 Toray Industries Inc.,Japan. We fabricated a fiber-connector-typesaturable absorber in which SWNTs and P3HT(poly-3-hexylthiophene) were coated on the connectorend. The pulse width was 147 fs and therepetition rate reached as high as 51 MHz.CMM3 • 11:30 a.m.Electro-Optical Properties of n-InGaN/p-GaNLED with p-Side Down with Varying IndiumComposition, Meredith L. Reed 1 , H. Shen 1 , MichaelWraback 1 , Alexander Syrkin 2 , Alexander Usikov 2 ;1ARL, USA, 2 Technologies and Devices Intl., Inc.,USA. The negative polarization charge at the n-InGaN/p-GaN interface of single heterojunctionLEDs with p-side down is investigated for variousIn-compositions. We demonstrate peak emissionwavelength blue-shift and intensity dependence onIn-composition with increasing current density.CMN6 • 11:30 a.m.Octave-Spanning Raman Comb Stabilizedto an Optical Frequency Standard, MasayukiKatsuragawa 1,2 , F. L. Hong 3,4 , T. Suzuki 1,2 , M.Arakawa 1 ; 1 Univ. of Electro-Communications,Japan, 2 PRESTO, Japan, 3 AIST, Japan, 4 CREST,Japan. It is shown that adiabatic manipulation ofa Raman process allows us to produce an opticalfrequency-combfrom single-frequency lasers. Thecarrier-envelope-offset frequency of the generatedoctave-spanning Raman comb is stabilized to anoptical-frequency-standard.IMD6 • 11:30 a.m.Nanoscale Optical Field Localization by ResonantlyFocused Plasmons, Liang Feng, DerekVan Orden, Maxim Abashin, Vitaliy Lomakin,Yeshaiahu Fainman; Univ. of California at SanDiego, USA. A plasmonic resonant nano-focusingantennahas been experimentally integrated witha Si waveguide to effectively convert an incomingwaveguide mode to a localized plasmon modeand focus light in an ultra small volume in all3 dimensions.Monday, June 1CML7 • 11:45 a.m.Mode-Locked Thulium-Doped Fiber Laserwith Carbon Nanotube Saturable Absorber,Khanh Kieu, Frank W. Wise; Cornell Univ., USA.We report mode-locking of an all-fiber thulium/holmium (Tm/Ho) co-doped laser with a saturableabsorber based on a fiber taper embedded in carbonnanotube/polymer composite (FTCNTPC).750fs soliton pulses are generated at wavelengtharound 1890nm.CMM4 • 11:45 a.m.Polarization-Enhanced Mg Doping in InGaN/GaN Superlattice for Green Light-EmittingDiodes, Hung Cheng Lin 1 , Geng Yen Lee 1 , HsuehHsing Liu 1 , Nai Wei Hsu 1 , Chin Chi Wu 1 , JenInn Chyi 1,2,3 ; 1 Dept. of Electrical Engineering,Natl. Central Univ., Taiwan, 2 Dept. of Optics andPhotonics, Natl. Central Univ., Taiwan, 3 Res. Ctr.for Applied Sciences, Academia Sinica, Taiwan.Electrical properties of low-temperature grownMg-modulation-doped InGaN/GaN superlattice(MD-SLS) for green light-emitting diodes (LEDs)are investigated. The light output intensity ofgreen LEDs with the p-InGaN/GaN MD-SLS isapproximately doubled.CMN7 • 11:45 a.m.Optical Frequency Comb Generated by Four-Wave Mixing in Highly Nonlinear Fibers, JoseM. Chavez Boggio, Slaven Moro, Joshua Windmiller,Sanja Zlatanovic, Evgueny Myslivets, Nikola Alic,Stojan Radic; Univ. of California at San Diego, USA.Efficient generation of a cascade of four-wavemixing products using a low-dispersion highlynonlinear fiber is demonstrated. The measuredoptical frequency comb (with a spacing of 100GHz) spans over more than 350 nm.IMD7 • 11:45 a.m.Generation of Vectorial Light Beams UsingSpace-Variant Subwavelength Gratings at 1064nm, Gilad Lerman, Avner Yanai, Uriel Levy;Hebrew Univ. of Jerusalem, Israel. The generationof vectorial beams at 1064 nm by the use of polarizationtransformer devices consisting of spacevariantsubwavelength gratings (SGs) is demonstratedexperimentally. We discuss using suchbeams for plasmonic nanofocusing applications.12:00 p.m.–1:30 p.m. Lunch BreakNOTES__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________60CLEO/IQEC and PhotonXpo 2009 • May 31–June 5, 2009