Search Results - "Hegblom, E. R."

High-speed characteristics of low-optical loss oxide-apertured vertical-cavity lasers by Thibeault, B.J., Bertilsson, K., Hegblom, E.R., Strzelecka, E., Floyd, P.D., Naone, R., Coldren, L.A.

“…We characterize the high-speed modulation properties of thin-oxide-apertured vertical-cavity lasers. The modulation response scales with device diameter due to…”
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Remote sensing of discrete stratospheric gravity-wave structure at 4.3-μm from the MSX satellite by PICARD, R. H, O'NEIL, R. R, GARDINER, H. A, GIBSON, J, WINICK, J. R, GALLERY, W. O, STAIR, A. T, WINTERSTEINER, P. P, HEGBLOM, E. R, RICHARDS, E

“…Distinctive structure in the 4.3- mu m spectral region has been imaged by the SPIRIT 3 radiometer on the MSX satellite observing the cloud-free atmosphere. We…”
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High-performance small vertical-cavity lasers: a comparison of measured improvements in optical and current confinement in devices using tapered apertures by Hegblom, E.R., Margalit, N.M., Fiore, A., Coldren, L.A.

“…We analyze the scaling characteristics of the optical and current confinement for three different vertical-cavity surface-emitting laser (VCSEL) structures…”
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Monolithic integration of substrate input/output resonant photodetectors and vertical-cavity lasers by Sjolund, O., Louderback, D.A., Hegblom, E.R., Ko, J., Coldren, L.A.

“…We present theoretical and experimental results on monolithically integrated through-the-substrate input/output vertical-cavity lasers (VCLs) and resonant…”
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Estimation of scattering losses in dielectrically apertured vertical cavity lasers by Hegblom, E. R., Babic, D. I., Thibeault, B. J., Coldren, L. A.

“…Dielectric apertures, formed by oxidation or wet-etching of high Al content AlGaAs layers in vertical cavity lasers, have recently been used for improved…”
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Postgrowth tuning of semiconductor vertical cavities for multiple-wavelength laser arrays by Fiore, A., Akulova, Y.A., Ko, J., Hegblom, E.R., Coldren, L.A.

“…Combined lateral-vertical oxidation of AlGaAs is investigated as a means of tuning the resonant wavelength of a semiconductor microcavity after the epitaxial…”
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Vertical-cavity surface-emitting laser diodes with post-growth wavelength adjustment by Wipiejewski, T., Peters, M.G., Hegblom, E.R., Coldren, L.A.

“…A novel vertical-cavity surface-emitting laser design enables the post-growth determination of the emission wavelength. The lasers employ a hybrid top mirror…”
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Flip-chip bonded arrays of monolithically integrated, microlensed vertical-cavity lasers and resonant photodetectors by Louderback, D.A., Sjolund, O., Hegblom, E.R., Ko, J., Coldren, L.A.

“…We present flip-chip bonded arrays of monolithically integrated vertical-cavity lasers (VCLs) and resonant photodetectors. The VCLs and photodetectors are…”
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Modulation and free-space link characteristics of monolithically integrated vertical-cavity lasers and photodetectors with microlenses by Louderback, D.A., Sjolund, O., Hegblom, E.R., Nakagawa, S., Ko, J., Coldren, L.A.

“…We present temperature, modulation, and free-space link characteristics of monolithically integrated vertical-cavity lasers (VCLs) and resonant photodetectors…”
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Technique for integration of vertical cavity lasers and resonant photodetectors by Sjölund, O., Louderback, D. A., Hegblom, E. R., Ko, J., Coldren, L. A.

“…We demonstrate a design that allows fabrication of substrate input/output resonant-cavity photodetectors and vertical cavity lasers (VCLs) on the same…”
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Multimode WDM optical data links with monolithically integrated multiple-channel VCSEL and photodetector arrays by Hu, S.-Y., Ko, J., Hegblom, E.R., Coldren, L.A.

“…We report on the design and implementation of a novel multiple-wavelength optical data link for low-cost multimode wavelength-division multiplexing (WDM)…”
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Dielectric apertures as intracavity lenses in vertical-cavity lasers by Coldren, L. A., Thibeault, B. J., Hegblom, E. R., Thompson, G. B., Scott, J. W.

“…Dielectric current apertures are shown to be effective as intracavity lenses for reduced optical losses in vertical-cavity lasers. The Gaussian resonator…”
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Multiple-wavelength vertical-cavity laser arrays based on postgrowth lateral-vertical oxidation of AlGaAs by Fiore, A., Akulova, Y. A., Ko, J., Hegblom, E. R., Coldren, L. A.

“…We demonstrate that combined lateral-vertical oxidation of AlGaAs can be used to change the resonant wavelength of an optical cavity after the single epitaxial…”
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Comparison of optical losses in dielectric-apertured vertical-cavity lasers by Floyd, P.D., Thibeault, B.J., Hegblom, E.R., Ko, J., Coldren, L.A., Merz, J.L.

“…The performance of vertical-cavity lasers (VCL's) employing dielectric apertures formed by lateral oxidation or wet-etch undercutting of an AlAs layer on a…”
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Scattering losses from dielectric apertures in vertical-cavity lasers by Hegblom, E.R., Babic, D.I., Thibeault, B.J., Coldren, L.A.

“…In vertical-cavity lasers (VCLs) employing oxide or airgap apertures, the lasing mode typically travels unguided throughout most of the structure. For the…”
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Reduced optical scattering loss in vertical-cavity lasers using a thin (300 /spl Aring/) oxide aperture by Thibeault, B.J., Hegblom, E.R., Floyd, P.D., Naone, R., Akulova, Y., Coldren, L.A.

“…Calculations show that significant optical scattering loss persists as standard quarter-wave (800 /spl Aring/) thick, dielectrically apertured vertical cavity…”
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Remote sensing of discrete stratospheric gravity-wave structure at 4.3-µm from the MSX satellite by Picard, R. H., O'Neil, R. R., Gardiner, H. A., Gibson, J., Winick, J. R., Gallery, W. O., Stair Jr, A. T., Wintersteiner, P. P., Hegblom, E. R., Richards, E.

“…Distinctive structure in the 4.3‐µm spectral region has been imaged by the SPIRIT 3 radiometer on the MSX satellite observing the cloud‐free atmosphere. We…”
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Coupled-cavity resonant photodetectors for high-performance wavelength demultiplexing applications by Hu, S. Y., Hegblom, E. R., Coldren, L. A.

“…A new coupled-cavity resonant photodetector structure is studied to provide a flat-topped passband with steep skirts in the photoresponse. The idea is to add a…”
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Interdiffused quantum wells for lateral carrier confinement in VCSELs by Naone, R.L., Floyd, P.D., Young, D.B., Hegblom, E.R., Strand, T.A., Coldren, L.A.

“…We show that it is necessary to eliminate carrier diffusion in the active region for viable vertical-cavity lasers (VCLs) with small dimensions. However,…”
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Low-threshold 840-nm laterally oxidized vertical-cavity lasers using AlInGaAs-AlGaAs strained active layers by Ko, J., Hegblom, E.R., Akulova, Y., Thibeault, B.J., Coldren, L.A.

“…We explore the use of a novel strained AlInGaAs-AlGaAs material system to achieve low-threshold current in oxide-apertured vertical-cavity lasers (VCLs)…”
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