Search Results - "Pocha, M.D."

Electrical and optical gain lever effects in InGaAs double quantum-well diode lasers by Pocha, M.D., Goddard, L.L., Bond, T.C., Nikolic, R.J., Vernon, S.P., Kallman, J.S., Behymer, E.M.

“…In multisection laser diodes, the amplitude or frequency modulation (AM or FM) efficiency can be improved using the gain lever effect. To study gain lever,…”
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Multiwavelength parallel optical interconnects for massively parallel processing by Patel, R.R., Bond, S.W., Pocha, M.D., Larson, M.C., Garrett, H.E., Drayton, R.F., Petersen, H.E., Krol, D.M., Deri, R.J., Lowry, M.E.

“…We describe a multiwavelength, multifiber (parallel) optical interconnect based on multimode fiber ribbon cables with applications in massively parallel…”
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Miniature Accelerometer and Multichannel Signal Processor for Fiberoptic Fabry-Pérot Sensing by Pocha, M.D., Meyer, G.A., McConaghy, C.F., Swierkowski, S.P., Wolfe, J.D.

“…A miniature accelerometer based on silicon microelectromechanical systems (MEMS) fabrication technology has been developed. Using a beam-suspended proof mass…”
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Threshold voltage controllability in double-diffused-MOS transistors by Pocha, M.D., Gonzalez, A.G., Dutton, R.W.

“…The sensitivity of double-diffused metal-oxide-semiconductor (D-MOS) transistor threshold voltage to fabrication process variations has been studied. Computed…”
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The effect of stimulant use on antiviral treatment in an integrated hepatitis clinic by Dieperink, Eric, M.D, Knott, Astrid, Ph.D, Thuras, Paul, Ph.D, Pocha, Christine, M.D., Ph.D

“…Abstract Objective The objective was to determine the impact of stimulant use on antiviral treatment for chronic hepatitis C patients in an integrated…”
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35-kV GaAs subnanosecond photoconductive switches by Pocha, M.D., Druce, R.L.

“…High-voltage, fast-pulse generation using GaAs photoconductive switches is investigated. It is possible to generate 35-kV pulses with risetimes as short as 135…”
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Modeling GaAs high-voltage, subnanosecond photoconductive switches in one spatial dimension by White, W.T., Dease, C.G., Pocha, M.D., Khanaka, G.H.

“…Subnanosecond high-voltage gallium arsenide photoconductive switches are studied to understand how to improve their switching speed, efficiency, and…”
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Neutron-treated, ultrafast, photoconductor detectors by WANG, C. L, POCHA, M. D, MORSE, J. D, SINGH, M. S, DAVIS, B. A

“…We have investigated homogeneous, photoconductive semiconductors as very fast radiation detectors. We irradiated GaAs, Cr-doped GaAs, and Fe-doped InP crystals…”
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A computer-aided design model for high-voltage double diffused MOS (DMOS) transistors by Pocha, M.D., Dutton, R.W.

“…High-voltage double diffused metal-oxide semiconductor transistors (DMOST's) have been fabricated with drain-source breakdown voltage greater than 200 V. This…”
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A low leakage 10 000-V silicon photoconductive switch by Koo, Jackson C., McWright, Glen M., Pocha, Michael D., Wilcox, Russel B.

“…Under high bias voltage, the leakage current through a silicon photoconductive switch is mainly caused by carrier injection at the metallic contacts. A low…”
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Avalanche photoconductive switchng by Pocha, M.D., Druce, R.L., Wilson, M.J., Hofer, W.W.

“…This paper describes work being done at Lawrence Livermore National Laboratory on the avalanche mode of operation of laser triggered photoconductive switches…”
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Subnanosecond linear GaAs photoconductive switching by Druce, R.L., Pocha, M.D., Griffin, K.L., Hofer, W.W.

“…We are conducting research in photoconductive switching for the purpose of generating subnanosecond pulses in the 25 - 50 kV range. We are exploiting the very…”
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Threshold voltage controllability in double diffused-MOS transistors by Pocha, M.D., Gonzalez, A.G., Dutton, R.W.

“…Processing dependencies of D-MOS threshold voltage are described in this paper. An efficient mini-computer program was written to calculate doping profiles…”
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Multi-mode fiber coarse WDM grating router using broadband add/drop filters for wavelength re-use by Patel, R.R., Bond, S.W., Larson, M.C., Pocha, M.D., Garrett, H.E., Lowry, M.E., Deri, R.J.

“…We demonstrate a grating-router with 37 nm channel spacing and 6 nm FWHM in the 800-900 nm range for WDM over multimode fiber. Broadband thin-film add/drop…”
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Wideband Microwave Generation With GaAs Photoconductive Switches by Druce, R.L., Pocha, M.D., Griffin, K.'L., Stein, J.M., James, B., O'Bannon, J.

“…We are using solid state photoconductive switches to generate wideband microwave pulses with peak powers to 20 MW, A parallel-plate Blumlein transmission line…”
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Tradeoff between threshold voltage and breakdown in high-voltage double-diffused MOS transistors by Pocha, M.D., Plummer, J.D., Meindl, J.D.

“…The design of junction isolated DMOS transistors suitable for monolithic integration has been studied. The purpose of this correspondence is to describe one of…”
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An experimental and theoretical analysis of double-diffused MOS transistors by Rodgers, T.J., Asai, S., Pocha, M.D., Dutton, R.W., Meindl, J.D.

“…An experimental and theoretical study of double-diffused MOS transistors (DMOST's) has been made. A simple, analytic two-transistor model gives insight into…”
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Multiwavelength VCSEL transmitter for WDM parallel optical fiber interconnects by Larson, M.C., Pocha, M.D., Garrett, H.E., Petersen, H.E., Bond, S.W., Drayton, R.F., Patel, R.R., Emanuel, M.A., Deri, R.J., Lowry, M.E.

“…We employ a combination of direct fiber coupling and broad-band add/drop filtering to demonstrate a 4-wavelength by 10-fiber VCSEL-based transmitter in a PGA…”
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Compact, low-crosstalk, WDM filter elements for multimode ribbon fiber data links by Patel, R.R., Garrett, H.E., Emanuel, M.A., Larson, M.C., Pocha, M.D., Krol, D.M., Deri, R.J., Lowry, M.E.

“…Our WDM filter approach is based upon post-market machining of the commercially available molded plastic "MT" fiber ribbon connector. Current work focuses on…”
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Results of OEMCM packaging efforts LLNL by Strand, O.T., Lu, S.Y., Lowry, M.E., Hawkins, R.J., Nelson, D.C., Pocha, M.D.

“…An important problem in realizing mass-produced and cost-effective optoelectronic multi-chip modules (OEMCM) is that of coupling the various photonic devices…”
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