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Filtering by: Creator Wallace, David A. Academic Affiliation Physics Has journal sim Applied Physics Letters

p-type conductivity in wide-band-gap BaCuQF (Q=S,Se)

Creator:

Yanagi, Hiroshi, Tate, Janet, Park, Sangmoon, Park, Cheol-Hee, and Keszler, Douglas A.

Abstract:

BaCuQF (Q=S,Se) materials, candidate transparent p-type conductors, were prepared by solid-state reaction, and their bulk electrical and optical properties were evaluated. The room-temperature Seebeck coefficient and electrical conductivity of undoped BaCuQF pellets were +56 μV/K and 0.088 S/cm, respectively, for the sulfide fluoride, and +32 μV/K and 0.061 S/cm, respectively,...

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Physics, Oregon State University, Corvallis, Oregon 97331 Sangmoon Park, Cheol-Hee Park, and Douglas A
Generation of multicycle terahertz pulses via optical rectification in periodically inverted GaAs structures

Creator:

Lee, Yun-Shik, Hurlbut, Walter C., Vodopyanov, K. L, Fejer, M. M., and Kozlov, V. G.

Abstract:

The authors demonstrate the generation of multicycle narrow-bandwidth terahertz pulses in periodically inverted GaAs structures using optical rectification of 2 μm, 100 fs pump pulses. Three different types of orientation-inverted samples are employed: optically contacted multilayer, orientation-patterned, and diffusion-bonded GaAs. The terahertz pulses are characterized by two-color (pump at 2...

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femtosecond lasers matches terahertz group velocities. Consequently, a terahertz pulse generated in ZnTe has a