Search Results - "Dykaar, D."

Terahertz emission from electric field singularities in biased semiconductors by Brener, I., Dykaar, D., Frommer, A., Pfeiffer, L., West, K.

“…Summary form only given. Fast electrical transients and terahertz (THz) radiation are generated when biased coplanar striplines are excited within the gap by…”
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Picosecond GaAs-based photoconductive optoelectronic detectors by SMITH, F. W, LE, H. Q, DIADIUK, V, HOLLIS, M. A, CALAWA, A. R, GUPTA, S, FRANKEL, M, DYKAAR, D. R, MOUROU, G. A, HSIANG, T. Y

“…A novel material deposited by molecular beam epitaxy at low substrate temperatures using Ga and As4 beam fluxes has been used as the active layer for a…”
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Ultrafast pulse generation in photoconductive switches by Keil, U.D., Dykaar, D.R.

“…Carrier and field dynamics in photoconductive switches are investigated by electrooptic sampling and voltage-dependent reflectivity measurements. We show that…”
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Interferometric characterization of 160 fs far-infrared light pulses by GREENE, B. I, FEDERICI, J. F, DYKAAR, D. R, JONES, R. R, BUCKSBAUM, P. H

“…We report the first interferometric characterization of freely propagating, subpicosecond, far-infrared (FIR) light pulses. FIR light was generated via short…”
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Electro-optic sampling and carrier dynamics at zero propagation distance by KEIL, U. D, DYKAAR, D. R

“…We demonstrate 200 fs (full width at half maximum) electrical pulse generation and detection using low-temperature grown GaAs and total internal reflection…”
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Limited thickness epitaxy in GaAs molecular beam epitaxy near 200 °C by EAGLESHAM, D. J, PFEIFFER, L. N, WEST, K. W, DYKAAR, D. R

“…The low-temperature limit to GaAs molecular beam epitaxy (MBE) is studied at temperatures from 250 °C to room temperature. Using transmission electron…”
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Log-periodic antennas for pulsed terahertz radiation by DYKAAR, D. R, GREENE, B. I, FEDERICI, J. F, LEVI, A. F. J, PFEIFFER, L. N, KOPF, R. F

“…A new type of log-periodic antenna, the wire log-spiral, has been designed and implemented on GaAs substrates with low-temperature grown GaAs photoconductors…”
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Ultrafast coplanar air-transmission lines by DYKAAR, D. R, LEVI, A. F. J, ANZLOWAR, M

“…We demonstrate subpicosecond electrical pulse propagation using coplanar air-transmission lines. Rise times of 0.8 ps after 2.8 mm of propagation are achieved…”
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Propagation model for ultrafast signals on superconducting dispersive striplines by Whitaker, J.F., Sobolewski, R., Dykaar, D.R., Hsiang, T.Y., Mourou, G.A.

“…The algorithm suitable for the computer-aided design of transmission lines is used to model the propagation of picosecond and subpicosecond electrical signals…”
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Intervalley scattering in GaAs and InP probed by pulsed far-infrared transmission spectroscopy by SAETA, P. N, FEDERECI, J. F, GREENE, B. I, DYKAAR, D. R

“…The dynamics of photoexcited electrons in GaAs and InP were studied using the transmission of 200-fs pulses of far-infrared radiation in the spectral range…”
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Electro-optic sampling using an aluminum gallium arsenide probe by DYKAAR, D. R, KOPF, R. F, KEIL, U. D, LASKOWSKI, E. J, ZYDZIK, G. J

“…We demonstrate a new electro-optic sampling probe with femtosecond resolution. The probe is a 7-μm-thick film of 80% AlGaAs used in both total internal…”
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High-frequency characterization of thin-film Y-Ba-Cu oxide superconducting transmission lines by DYKAAR, D. R, SOBOLEWSKI, R, CHWALEK, J. M, WHITAKER, J. F, HSIANG, Y, MOUROU, G. A, LATHROP, D. K, RUSSEK, S. E, BURHMAN, R. A

“…We report the first measurements of picosecond pulse propagation on transmission lines patterned from YBa2Cu3O7−x films. Distortion-free propagation of high…”
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Far-infrared light generation at semiconductor surfaces and its spectroscopic applications by Greene, B.I., Saeta, P.N., Dykaar, D.R., Schmitt-Rink, S., Chuang, S.L.

“…Femtosecond pulses of far-infrared (FIR) radiation can be generated in the depletion field near semiconductor surfaces under optical excitation via the inverse…”
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Direct picosecond measurement of photoinduced Cooper-pair breaking in lead by FEDERICI, J. F, GREENE, B. I, SAETA, P. N, DYKAAR, D. R, SHARIFI, F, DYNES, R. C

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Simple technique for picosecond electrical pulse injection into arbitrary circuits by Dykaar, D. R., Darack, S. B.

“…We demonstrate a new external photoconductive excitation source. Low-temperature grown GaAs is used as a picosecond electrical pulser. A simple fabrication…”
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Propagation characteristics of picosecond electrical transients on coplanar striplines by HSIANG, T. Y, WHITAKER, J. F, SOBOLEWSKI, R, DYKAAR, D. R, MOUROU, G. A

“…Using a cryogenic electro-optic sampling technique, we have studied the transient propagation characteristics of superconducting and normal indium lines in the…”
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Cooper pair breaking in lead measured by pulsed terahertz spectroscopy by Federici, J.F., Greene, B.I., Saeta, P.N., Dykaar, D.R., Sharifi, F., Dynes, R.C.

“…A technique for characterizing pulsed far-infrared radiation with a demonstrated resolution of approximately 100 fs is used to measure directly Cooper pair…”
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Picosecond switching dynamics of a Josephson tunnel junction by Dykaar, D.R., Sobolewski, R., Hsiang, T.Y.

“…The authors previously reported (D.R. Dykaar et al., 1987) switching measurements of a tunnel junction excited by photogenerated picosecond current pulses. The…”
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Large-signal picosecond response of InGaAs/InP quantum well lasers with an intracavity loss modulator by DYKAAR, D. R, BERTHOLD, K, LEVI, A. F. J, TANBUN-EK, T, LOGAN, R. A

“…Single and multiple quantum well laser diodes operating at 1.5 μm are fabricated incorporating an intracavity electroabsorptive loss modulator. Absorption in…”
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High speed normal and superconducting coplanar transmission lines by Keil, U.D., Dykaar, D.R., Levi, A.F.J., Kopf, R.F., Pfeiffer, L.N., Darack, S.B., West, K.W.

“…The authors present measurements of picosecond pulse propagation on coplanar strip transmission lines for which speed (i.e., group velocity) as well as phase…”
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