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Dive into the research topics where Jonathan Geske is active.

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Featured researches published by Jonathan Geske.


lasers and electro-optics society meeting | 1999

High temperature 1300 nm VCSELs for single-mode fiber-optic communication

Vijaysekhar Jayaraman; Jonathan Geske; M.H. MacDougal; Ted D. Lowes; Frank H. Peters; D. VanDeusen; T.C. Goodnough; Sean P. Kilcoyne; D. Welch

Gore Photonics has reported a new long-wavelength VCSEL structure that employs an electrically pumped short-wavelength VCSEL optical pump to drive a 1300 nm VCSEL, as an alternative to direct current injection. In this paper, we provide an update on the recent progress of devices using this structure. In addition to improving power, temperature performance, and speed, our efforts have been focused on making reliable, mechanically robust devices compatible with standard packages.


lasers and electro optics society meeting | 1998

High temperature continuous wave 1300 nm vertical cavity lasers

Vijaysekhar Jayaraman; Jonathan Geske; M.H. MacDougal; Frank H. Peters; Ted D. Lowes; T.T. Char

Vertical cavity surface-emitting lasers (VCSELs) operating at 1310/1550 nm have many potential applications in emerging fiber-optic networks. We describe 1300 nm VCSELs with an integrated 850 nm VCSEL optical pump. Large multi-mode devices exhibit 2 mW room temperature CW (RTCW) power, and CW operation to 700 C, while smaller single-mode devices show 1.3 mW RTCW power with CW operation to 800 C.


Electronics Letters | 1998

Uniform threshold current, continuous-wave, singlemode 1300 nm vertical cavity lasers from 0 to 70°C

Vijaysekhar Jayaraman; Jonathan Geske; M.H. MacDougal; Frank H. Peters; Ted D. Lowes; T.T. Char


Archive | 2001

Method of making a semiconductor device with aligned oxide apertures and contact to an intervening layer

Vijaysekhar Jayaraman; Jonathan Geske


Archive | 2000

Wavelength division multiplexed array of long-wavelength vertical cavity lasers

Vijaysekhar Jayaraman; Jonathan Geske; Frank H. Peters


Archive | 1998

Semiconductor device with aligned oxide apertures and contact to an intervening layer

Vijaysekhar Jayaraman; Jonathan Geske


Archive | 1999

Low-capacitance bond pads for high speed devices

Frank Peters; Jonathan Geske


Archive | 2002

Multiple epitaxial region substrate and technique for making the same

Jonathan Geske; Vijaysekhar Jayaraman


Archive | 2000

Laser mit vertikalem Resonator und Verfahren zur Einstellung der Wellenlänge A vertical cavity laser and method for adjusting the wavelength

Jonathan Geske; Vijaysekhar Jayaraman; Frank Peters


Archive | 2000

Vertical cavity laser and method of wavelength adjustment

Jonathan Geske; Vijaysekhar Jayaraman; Frank H. Peters

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Frank H. Peters

Tyndall National Institute

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M.H. MacDougal

University of Southern California

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Ted D. Lowes

W. L. Gore and Associates

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