Search Results - "DONG HO WU"
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Coherent and incoherent terahertz beams measured from a terahertz photoconductive antenna
Published in Applied physics letters (03-02-2014)“…We have systematically measured and analyzed the terahertz beams of a photoconductive antenna fabricated on a GaAs substrate. Our data indicate that the…”
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Optimal electro-optic sensor configuration for phase noise limited,remote field sensing applications
Published in Applied physics letters (01-06-2009)“…Electro-optic (EO) sensors, used for the nonperturbative detection of electric fields, are typically configured to modulate an optical probe beam along a…”
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Pump beam recycling for an enhancement of the output power of Terahertz-wave parametric oscillator
Published in 2009 Conference on Lasers and Electro-Optics and 2009 Conference on Quantum electronics and Laser Science Conference (01-05-2009)“…We have implemented a recycled pump beam technique on a terahertz parametric oscillator (TPO). The TPO with a recycled beam produces a terahertz beam that is…”
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Conference Proceeding -
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Unusual electron–phonon superconductivity in nickel borocarbides?
Published in Physica. C, Superconductivity (01-11-2001)“…We propose a picture of incomplete superconducting condensation, which is based on the BCS pairing theory, to account for the seemingly contradictory…”
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Effects of Crystal-Induced Optical Incoherence in Electro-Optic Field Sensors
Published in Journal of electronic materials (01-06-2010)“…Electro-optic (EO) sensors, used for the nonperturbative detection of electric fields, are strongly influenced by inhomogeneities and deviations of…”
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Journal Article Conference Proceeding -
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An integrated, noninvasive, fiber optic sensor for electric and magnetic field measurement applications
Published in CLEO: 2011 - Laser Science to Photonic Applications (01-05-2011)“…We describe a ruggedized, nonmetallic, fiber optic sensor utilizing nonlinear crystals for measurements of electric and magnetic fields. Extensive field test…”
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Conference Proceeding -
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An all-dielectric, 3-axis electric field sensor using quasi-longitudinally configured electro-optic crystals
Published in 2010 IEEE Sensors (01-11-2010)“…We describe a stabilized, all-dielectric, 3-axis electric field sensor using electro-optic (EO) crystals. By directing the laser probe quasi-longitudinally…”
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Conference Proceeding -
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High SNR single measurements of trace gas phase spectra at THz frequencies
Published in Applied physics letters (27-11-2017)“…Fast detection and identification of trace gases in ambient conditions demand a high signal-to-ratio (SNR) and superior resolution from a single measurement…”
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Chaos regularization of quantum tunneling rates
Published in Physical review. E, Statistical, nonlinear, and soft matter physics (01-06-2011)“…Quantum tunneling rates through a barrier separating two-dimensional, symmetric, double-well potentials are shown to depend on the classical dynamics of the…”
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Measurement of wave chaotic eigenfunctions in the time-reversal symmetry-breaking crossover regime
Published in Physical review letters (18-09-2000)“…We present experimental results on eigenfunctions of a wave chaotic system in the continuous crossover regime between time-reversal symmetric and time-reversal…”
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Progress in High Sensitivity Electro-optic Field Sensors
Published in 2007 Conference on Lasers and Electro-Optics (CLEO) (01-05-2007)“…An EO sensor measures an external electric field though a modulation of birefringence (detected optically) induced by the field on the nonlinear crystal. We…”
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Conference Proceeding -
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Enhancement of the output power of a terahertz parametric oscillator with recycled pump beam
Published in Applied physics letters (05-10-2009)“…We report a technique for the terahertz parametric oscillator, in which we recycle the pump beam in order to increase the efficiency and enhance the terahertz…”
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Structural characteristics of a single-crystalline Sr0.75Ba0.25NbO3 electro-optic material
Published in Applied physics. A, Materials science & processing (01-03-2009)“…Sr 0.75 Ba 0.25 NbO 3 (SBN-75) has the tungsten-bronze structure with a tetragonal unit cell and exhibits electro-optic properties that are important for…”
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Effects of magnetically induced optical incoherence in arrayed Faraday rotator crystals
Published in Applied physics letters (01-06-2015)“…Bismuth doped iron garnet films were studied in arrayed structures to improve sensitivity in polarimetric magnetic field sensors. The sensitivity gained from…”
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Structural and compositional inhomogeneities in Bismuth-Substituted rare earth iron garnet epitaxial films
Published in Materials letters (15-11-2017)“…•Inhomogeneities in Bi-doped rare earth Fe-garnet epitaxial films are demonstrated.•Spatial compositional variation observed by X-ray fluorescence…”
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Enhancements of Faraday rotation through ferromagnetic domain matching in arrayed magneto-optic films
Published in Applied physics letters (13-06-2016)“…In linear arrays of optically probed bismuth-doped iron garnet films, the Faraday rotation signal produced by an external magnetic field is a complex function…”
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Effects of diamagnetic Ga dilution on the Faraday response of bismuth-doped iron garnet films
Published in Applied physics letters (13-06-2016)“…In bismuth-doped iron garnets, diamagnetic dilution of Fe with Ga is a well-known method to increase the Faraday rotation response under externally applied…”
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Temperature dependence of penetration depth and surface resistance of Nd1.85Ce0.15CuO4
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Non intrusive electromagnetic sensors for ultra wideband applications using electro-optic and magneto-optic materials
Published in 2011 IEEE International Conference on Ultra-Wideband (ICUWB) (01-09-2011)“…We have developed and tested fiber optic electric and magnetic field sensors for ultra wideband (UWB) applications. The sensors are based on nonlinear effects…”
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Conference Proceeding