Search Results - "Vurgaftman, I."

Interband absorption strength in long-wave infrared type-II superlattices with small and large superlattice periods compared to bulk materials by Vurgaftman, I., Belenky, G., Lin, Y., Donetsky, D., Shterengas, L., Kipshidze, G., Sarney, W. L., Svensson, S. P.

“…The absorption spectra for the antimonide-based type-II superlattices (SLs) for detection in the long-wave infrared (LWIR) are calculated and compared to the…”
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Simple model of power generation in thermoradiative devices including realistic nonradiative processes by Vurgaftman, I., Meyer, J. R.

“…We formulate a simple model for the power densities generated by thermoradiative devices based on narrow-gap semiconductors. Our model is more realistic than…”
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Mid-infrared dual-comb spectroscopy with room-temperature bi-functional interband cascade lasers and detectors by Sterczewski, L. A., Bagheri, M., Frez, C., Canedy, C. L., Vurgaftman, I., Meyer, J. R.

“…Interband cascade (IC) laser structures offer attractive potential for operation at room temperature as both broadband coherent sources of mid-infrared light…”
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Rebalancing of internally generated carriers for mid-infrared interband cascade lasers with very low power consumption by Vurgaftman, I., Bewley, W.W., Canedy, C.L., Kim, C.S., Kim, M., Merritt, C.D., Abell, J., Lindle, J.R., Meyer, J.R.

“…The interband cascade laser differs from any other class of semiconductor laser, conventional or cascaded, in that most of the carriers producing population…”
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Detection of dimethyl methylphosphonate (DMMP) with an interband cascade laser sensor by Kim, C S, Bewley, W W, Nguyen, V, Kim, M, Canedy, C L, Meyer, J R, Kendziora, C A, McGill, R A, Vurgaftman, I

“…We demonstrate the sensitive detection of dimethyl methylphosphonate (DMMP, a hydrogen-bond (HB) basic phosphonate ester) using additional optical loss induced…”
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Room-temperature mid-infrared interband cascade vertical-cavity surface-emitting lasers by Bewley, W. W., Canedy, C. L., Kim, C. S., Merritt, C. D., Warren, M. V., Vurgaftman, I., Meyer, J. R., Kim, M.

“…We report interband cascade vertical-cavity surface-emitting lasers (ICVCSELs) that operate in pulsed mode at temperatures up to 70 °C. Their emission at λ ≈…”
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Multi-Gb/s free-space laser communication at 4.6-μm wavelength using a high-speed, room-temperature, resonant-cavity infrared detector (RCID) and a quantum-cascade laser by Marsland, R., Jacobs, S., Canedy, C. L., Ellis, C., Kim, C. S., Jackson, E. M., Vurgaftman, I., Kolasa, B., Jayaraman, V., Turville-Heitz, M., Earles, T., Ruder, S., Knipfer, B., Ryu, J. H., Meyer, J. R., Botez, D., Mawst, L. J.

“…Research has shown that free-space laser communication systems may experience fewer outages due to atmospheric impairments such as haze, fog, clouds, and…”
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Mid-infrared interband cascade lasers operating at ambient temperatures by Vurgaftman, I, Canedy, C L, Kim, C S, Kim, M, Bewley, W W, Lindle, J R, Abell, J, Meyer, J R

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Electronic states, pseudo-spin, and transport in the zinc-blende quantum wells and wires with vanishing band gap by Khurgin, J. B., Vurgaftman, I.

“…We consider theoretically the electronic structure of quasi-two and quasi-one-dimensional heterostructures comprised of III–V and II–VI semiconductors such as…”
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A room-temperature semiconductor spaser operating near 1.5 μm by Flynn, R A, Kim, C S, Vurgaftman, I, Kim, M, Meyer, J R, Mäkinen, A J, Bussmann, K, Cheng, L, Choa, F-S, Long, J P

“…Room temperature spasing of surface plasmon polaritons at 1.46 μm wavelength has been demonstrated by sandwiching a gold-film plasmonic waveguide between…”
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Two-dimensional plasmonic grating for increased quantum efficiency in midwave infrared nBn detectors with thin absorbers by Jackson, E M, Nolde, J A, Kim, M, Kim, C S, Cleveland, E R, Affouda, C A, Canedy, C L, Vurgaftman, I, Meyer, J R, Aifer, E H, Lorentzen, J

“…We demonstrate a strategy for increasing the operating temperatures of nBn midwave infrared (MWIR) focal plane arrays, based on the use of two-dimensional…”
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Effect of molecular beam epitaxy growth conditions on phase separation in wide-bandgap InAlAsSb lattice-matched to InP by Tomasulo, S., Gonzalez, M., Lumb, M.P., Brown, C.R., Dicarlo, A.H., Sellers, I.R., Vurgaftman, I., Meyer, J.R., Walters, R.J., Yakes, M.K.

“…•Molecular beam epitaxy of InAlAsSb lattice-matched to InP with bandgap of ~1.68 eV.•Low adatom mobility mitigates phase separation.•Reduced phase separation…”
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Reticulated shallow etch mesa isolation for controlling surface leakage in GaSb-based infrared detectors by Nolde, J. A., Jackson, E. M., Bennett, M. F., Affouda, C. A., Cleveland, E. R., Canedy, C. L., Vurgaftman, I., Jernigan, G. G., Meyer, J. R., Aifer, E. H.

“…Longwave infrared detectors using p-type absorbers composed of InAs-rich type-II superlattices (T2SLs) nearly always suffer from high surface currents due to…”
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Reliable mid-infrared laterally-coupled distributed-feedback interband cascade lasers by Forouhar, S., Borgentun, C., Frez, C., Briggs, R. M., Bagheri, M., Canedy, C. L., Kim, C. S., Kim, M., Bewley, W. W., Merritt, C. D., Abell, J., Vurgaftman, I., Meyer, J. R.

“…We report on the performance and reliability of laterally-coupled distributed-feedback (DFB) interband cascade lasers designed to operate at 3.6 μm wavelength…”
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Mid-infrared interband cascade light emitting devices with milliwatt output powers at room temperature by Abell, J., Kim, C. S., Bewley, W. W., Merritt, C. D., Canedy, C. L., Vurgaftman, I., Meyer, J. R., Kim, M.

“…We demonstrate incoherent light emission peaked at λ = 3.3 μm from a 15-stage interband cascade active region. The interband cascade light emitting devices…”
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Graded band gap for dark-current suppression in long-wave infrared W-structured type-II superlattice photodiodes by Vurgaftman, I., Aifer, E. H., Canedy, C. L., Tischler, J. G., Meyer, J. R., Warner, J. H., Jackson, E. M., Hildebrandt, G., Sullivan, G. J.

“…A new W-structured type-II superlattice photodiode design, with graded band gap in the depletion region, is shown to strongly suppress dark currents due to…”
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Lifetimes and Auger coefficients in type-II W interband cascade lasers by Bewley, W. W., Lindle, J. R., Kim, C. S., Kim, M., Canedy, C. L., Vurgaftman, I., Meyer, J. R.

“…Lifetimes and Auger coefficients for type-II W interband cascade lasers are deduced from correlations of the experimental threshold current densities and slope…”
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Interband cascade lasers with >40% continuous-wave wallplug efficiency at cryogenic temperatures by Canedy, C. L., Kim, C. S., Merritt, C. D., Bewley, W. W., Vurgaftman, I., Meyer, J. R., Kim, M.

“…Broad-area 10-stage interband cascade lasers (ICLs) emitting at λ = 3.0–3.2 μm are shown to maintain continuous-wave (cw) wallplug efficiencies exceeding 40%…”
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Multi-species sensing using multi-mode absorption spectroscopy with mid-infrared interband cascade lasers by O’Hagan, S., Northern, J. H., Gras, B., Ewart, P., Kim, C. S., Kim, M., Merritt, C. D., Bewley, W. W., Canedy, C. L., Vurgaftman, I., Meyer, J. R.

“…The application of an interband cascade laser, ICL, to multi-mode absorption spectroscopy, MUMAS, in the mid-infrared region is reported. Measurements of…”
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High purity Ge-Sb-Se/S step index optical fibers by Parnell, H., Furniss, D., Tang, Z., Fang, Y., Benson, T. M., Canedy, C. L., Kim, C. S., Kim, M., Merritt, C. D., Bewley, W. W., Vurgaftman, I., Meyer, J. R., Seddon, A. B.

“…Chalcogenide glasses are a promising group of materials for remote sensing applications. Two compositions from the Ge-Sb-Se/S system are investigated as core…”
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