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Monday, June 1, 2009 - CLEO

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Room 340 Room 341 Rooms 328-329<strong>CLEO</strong>8:00 a.m.–9:45 a.m.CMI • THz Instrumentation andTechniquesChiko Otani; RIKEN, Japan,Presider8:00 a.m.–9:45 a.m.CMJ • Nonlinear OpticalMaterialsDavid Hagan; CREOL, Univ. ofCentral Florida, USA, Presider8:00 a.m.–9:45 a.m.CMK • Quantum Dots andMode-Locked LasersA. Catrina Bryce; Univ. ofGlasgow, UK, PresiderCMI1 • 8:00 a.m.Amplitude Modulation of Terahertz QuantumCascade Lasers by External Interband-ExcitationLight, Norihiko Sekine, Iwao Hosako; NICT, Japan.We have investigated light-current characteristicsof terahertz quantum cascade lasers under externallight injection. The light injection induces themodulation of the output power that is explainedby the characteristic properties of the laser.CMJ1 • 8:00 a.m. InvitedUltra-Wide THz-Wave Generation by DASTand BNA, Hiromasa Ito 1,2 ; 1 RIKEN Sendai, Japan,2Tohoku Univ., Japan. Organic crystals are mostpromising materials for efficient THz-wavegeneration. 4-dimethylamino-N-methyl-4-stilbazolium tosylate (DAST) and N-benzyl-2-methyl-4-nitroaniline (BNA) are investigatedfor ultra-wide THz-wave generation. New THzapplications will be presented using frequencyagileTHz sources.CMK1 • 8:00 a.m. TutorialCommercialization of QD Lasers, MitsuruSugawara; Fujitsu Labs Ltd., Japan. This talk willoverview developments and commercializationof quantum-dot optical devices, i.e., lasers andamplifiers, from the epoch-making finding of InAsself-assembled quantum dots emitting at 1.3 μm tothe launch of QD Laser Inc and its activity.CMI2 • 8:15 a.m.Inverse-Quantum-Engineering: A New Methodologyfor Designing THz QCLs for Basic andApplied Research, Inès Waldmueller, Michael C.Wanke, Maytee Lerttamrab, Dan G. Allen, WengW. Chow; Sandia Natl. Labs, USA. We demonstratethe general capabilities of the developed methodologyby tuning the emission frequency of a GaAs/Al x Ga 1-x As THz QCL over a frequency range of 2.9THz, and the Al fraction over a range of 0.17.CMI3 • 8:30 a.m.Spatiotemporal Control of THz Pulses byShaping the Laser Beam Transverse Profile ina Non Linear Rectifying Crystal, Ciro D’Amico,Marc Tondusson, Jerome Degert, Eric Freysz; Univ.de Bordeaux1, France. We demonstrate that spatiotemporalproperties of Terahertz (THz) pulsesgenerated in a ZnTe crystal are controlled in theintermediate field by shaping the transverse spatialprofile of the near infrared (NIR) femtosecond(fs) optical pump.CMJ2 • 8:30 a.m.Multilayer Walk-off Corrected Nonlinear OpticalDevices - Engineering of Quasi-NoncriticalPhase-Matching to All Wavelengths, XiaodongMu, Helmuth E. Meissner, Huai-Chuan Lee; OnyxOptics, Inc., USA. Multilayer walk-off correctednonlinear crystal composites not only can correctthe spatial walk-off, but also can compensatethe phase-mismatching caused by incident angledeviation. The noncritical phase-matching-likeproperties can be engineered to all wavelengths.Dr. Sugawara joined Fujitsu Laboratories Ltd.,Japan, in 1984, and studied physics of semiconductoroptical devices like lasers, detectors, amplifiers,and switches. Since the finding of self-assembledquantum dots emitting at 1.3 micron by hisgroup in 1995, he has been working on physics ofquantum-dot lasers and amplifiers and their applicationto optical communications. He workedas a professor of University of Tokyo in 2001-2005to develop quantum-dot optical devices underthe academic-industrial collaboration project. In2006, he launched QD Laser, Inc. to commercializequantum-dot optical devices as President andCEO. He is the recipient of the JAPAN PrimeMinister’s Award 2007 and the Runner-Up Awardin the Semiconductor category of The Wall StreetJournal Technology Innovation Awards 2006. He isthe editor and the author of the book entitled Self-Assembled InGaAs/GaAs Quantum Dots.<strong>Monday</strong>, <strong>June</strong> 1CMI4 • 8:45 a.m.Terahertz-Wave Detection Using an OrganicDAST Crystal Covering Ultra-Wide Frequency-Range at Room Temperature, Hiroaki Minamide 1 ,Jun Zhang 1 , Ruixiang Guo 1 , Seigo Ohno 1 , KatsuhikoMiyamoto 1 , Hiromasa Ito 1,2 ; 1 RIKEN Sendai,Japan, 2 Tohoku Univ., Japan. Rapidly responding,high-sensitivity terahertz (THz)-wave detectionwith an organic DAST crystal was demonstratedusing nonlinear frequency up-conversion tonear-infrared light. Detection of THz-wave signalsfrom 16.4-THz to 26.3-THz was achieved at roomtemperature.CMJ3 • 8:45 a.m.Nonlinear Optical Transformation of the PolarizationState with Holographic Cut CubicCrystals, Stoyan Kourtev 1 , Lorenzo Canova 2 ,Nikolay Minkovski 1 , Aurelie Jullien 2 , Olivier Albert 2 ,Rodrigo Lopez-Martens 2 , Solomon M. Saltiel 1 ;1Faculty of Physics, Sofia Univ., Bulgaria, 2 Labd’Optique Appliquée, École Natl.e Supérieure deTechniques Avances, École Polytechnique, CNRS,France. We demonstrate very efficient (~30%)nonlinear optical polarization switch between twolinearly cross-polarized states with holographiccut BaF 2 crystal. The same cut can be used fornonlinear optical transformation of circularlypolarized light.Concurrent sessions are grouped across four pages. Please review all four pages for complete session information.51

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