Prof. Kevin L. Lear Profile

Prof. Kevin L. Lear

Professor at Colorado State Univ

SPIE Involvement:

Author | Instructor

Publications (35)

Proceedings Article | 11 March 2024 Presentation + Paper

Tolerance analysis of local evanescent array coupled (LEAC) sensors fabricated in silicon photonics foundries

Cameron Holmes, Kevin Lear

Proceedings Volume 12880, 1288008 (2024) https://doi.org/10.1117/12.3009540

KEYWORDS: Photodetectors, Biosensors, Cladding, Tolerancing, Biofilms, Simulations, Sensors, Germanium, Waveguides, Silicon

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Proceedings Article | 23 February 2011 Paper

Automated optical cell detection, sorting, and temperature measurements

Joel Kindt, Mujahid Naqbi, Torsten Kiljan, Wesley Fuller, Weina Wang, David Kisker, Kevin Lear

Proceedings Volume 7902, 790222 (2011) https://doi.org/10.1117/12.875608

KEYWORDS: Microfluidics, Electrodes, Dielectrophoresis, Temperature metrology, Spectroscopy, Fabry–Perot interferometers, Optical analysis, Refraction, Glasses, Refractive index

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Proceedings Article | 22 February 2011 Paper

A potential individual cell malignancy indicator: focal length

Weina Wang, Kevin Lear

Proceedings Volume 7890, 789002 (2011) https://doi.org/10.1117/12.873972

KEYWORDS: Blood, Cancer, Lymphoma, Microfluidics, Mirrors, Diagnostics, Biomedical optics, Statistical analysis, Refractive index, Spectroscopy

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Proceedings Article | 9 February 2011 Paper

Optimization of waveguide structure for local evanescent field shift detection

Zhangjing Yi, Rongjin Yan, Timothy Erickson, Rashid Safaisini, Kevin Lear

Proceedings Volume 7941, 79410L (2011) https://doi.org/10.1117/12.875962

KEYWORDS: Waveguides, Sensors, Modulation, Biosensors, Cladding, Metrology, Beam propagation method, Microfluidics, Computer simulations, Optical simulations

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Proceedings Article | 26 February 2010 Paper

DC and AC performance of leaky-mode metal-semiconductor-metal polysilicon photodetectors

Robert Pownall, Guangwei Yuan, Charles Thangaraj, Joel Kindt, Tom Chen, Phil Nikkel, Kevin Lear

Proceedings Volume 7598, 759811 (2010) https://doi.org/10.1117/12.843002

KEYWORDS: Photodetectors, Waveguides, Sensors, Silicon, Semiconductor lasers, Optical interconnects, Absorption, Cladding, CMOS technology, Metals

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Proceedings Article | 24 February 2010 Paper

Immunoassay demonstration using a local evanescent array coupled biosensor

Rongjin Yan, Luke Kingry, Richard Slayden, Kevin Lear

Proceedings Volume 7559, 75590D (2010) https://doi.org/10.1117/12.842201

KEYWORDS: Waveguides, Biosensors, Sensors, Modulation, Cladding, Refractive index, Detector arrays, Beam propagation method, Photodetectors, Optical lithography

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Proceedings Article | 24 February 2010 Paper

A multichannel fiber optic photoluminescence system for multiplex biosensor arrays

Zhangjing Yi, Zhong Zhong, Kenneth Reardon, Weina Wang, Manasi Katragadda, Kevin Lear

Proceedings Volume 7559, 75590T (2010) https://doi.org/10.1117/12.842900

KEYWORDS: Sensors, Luminescence, Biosensors, Fiber optics, Oxygen, Optical filters, Biological research, Bandpass filters, Transducers, Spectroscopy

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Proceedings Article | 24 February 2010 Paper

Transverse mode analysis of optofluidic intracavity spectroscopy of canine hemangiosarcoma

Weina Wang, Douglas Thamm, David Kisker, Kevin Lear

Proceedings Volume 7559, 75590C (2010) https://doi.org/10.1117/12.842142

KEYWORDS: Cancer, Microfluidics, Spectroscopy, Blood, Diagnostics, Tumor growth modeling, Statistical analysis, Mirrors, Diffraction, Resonators

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Proceedings Article | 22 February 2010 Paper

A photonic biosensor system on a CMOS chip

Kevin Lear, Rongjin Yan

Proceedings Volume 7606, 76060D (2010) https://doi.org/10.1117/12.842960

KEYWORDS: Sensors, Waveguides, Modulation, Photoresist materials, Photodetectors, Biosensors, Refractive index, CMOS sensors, Proteins, Optical lithography

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Proceedings Article | 6 February 2010 Paper

Non-mechanical beam steering of high speed VCSEL arrays

John Joseph, Rashid Safaisini, Gerard Dang, Kevin Lear

Proceedings Volume 7615, 76150B (2010) https://doi.org/10.1117/12.842735

KEYWORDS: Vertical cavity surface emitting lasers, Beam steering, Gallium arsenide, Modulation, Copper, Oxides, Thermal effects, Mirrors, Plating

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Proceedings Article | 6 February 2010 Paper

Thermal resistance reduction in 670 nm vertical-cavity surface-emitting lasers

Rashid Safaisini, Klein Johnson, Kevin Lear

Proceedings Volume 7615, 76150L (2010) https://doi.org/10.1117/12.842693

KEYWORDS: Vertical cavity surface emitting lasers, Plating, Resistance, Copper, Electroplating, Temperature metrology, Oxides, Heatsinks, Aluminium gallium indium phosphide, Oxidation

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Proceedings Article | 6 February 2010 Paper

High-speed 980nm VCSELs with integrated distributed losses for mode control

Ahmad Al-Omari, Kevin Lear, Husam Hamad

Proceedings Volume 7615, 76150P (2010) https://doi.org/10.1117/12.840554

KEYWORDS: Vertical cavity surface emitting lasers, Oxides, Modulation, Laser damage threshold, Aluminum, Resistance, Scattering, Scanning electron microscopy, Oxidation, Continuous wave operation

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Proceedings Article | 10 May 2007 Paper

Design of clock recovery circuits for optical clocking in DSM CMOS

Charles Thangaraj, Kevin Stephenson, Tom Chen, Kevin Lear, Abdul Matheen Raza

Proceedings Volume 6590, 65900F (2007) https://doi.org/10.1117/12.721646

KEYWORDS: Clocks, Monte Carlo methods, Sensors, Optical clocks, Waveguides, Field effect transistors, Optical amplifiers, Silicon, Diodes, Amplifiers

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Proceedings Article | 26 February 2007 Paper

Progress and issues for high-speed vertical cavity surface emitting lasers

Kevin Lear, Ahmad Al-Omari

Proceedings Volume 6484, 64840J (2007) https://doi.org/10.1117/12.715081

KEYWORDS: Vertical cavity surface emitting lasers, Modulation, Resistance, Copper, Oxides, Capacitance, Heatsinks, Photons, Mirrors, Semiconductor lasers

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Proceedings Article | 4 November 2004 Paper

Bottom-emitting flip-chip VCSEL structure with reduced constraints on modulation response

Ahmad Al-Omari, Stewart Feld, Kevin Lear

Proceedings Volume 5556, (2004) https://doi.org/10.1117/12.558041

KEYWORDS: Vertical cavity surface emitting lasers, Modulation, Oxides, Capacitance, Resistance, Optical interconnects, Structural design, Semiconductor lasers, Sensors, Indium gallium arsenide

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Proceedings Article | 4 November 2004 Paper

Waveguide coupled CMOS photodetector for on-chip optical interconnects

Abdul Raza, Guang Yuan, Charles Thangaraj, Thomas Chen, Kevin Lear

Proceedings Volume 5556, (2004) https://doi.org/10.1117/12.559875

KEYWORDS: Waveguides, Photodiodes, Sensors, Silicon, Photodetectors, Optical interconnects, Cladding, Clocks, Metals, Infrared lasers

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Proceedings Article | 22 October 2004 Paper

Dependence of vertical-cavity surface-emitting laser diodes with integrated microfluidic channels on fluid refractive index

Dhiraj Kumar, Hua Shao, Kevin Lear

Proceedings Volume 5557, (2004) https://doi.org/10.1117/12.557392

KEYWORDS: Vertical cavity surface emitting lasers, Microfluidics, Mirrors, Refractive index, Resonators, Dielectric mirrors, Semiconductor lasers, Biosensors, Laser resonators, Diodes

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Proceedings Article | 22 October 2004 Paper

Novel local evanescent field detection waveguide multianalyte biosensor

Guangwei Yuan, Matthew Stephens, David Dandy, Kevin Lear

Proceedings Volume 5557, (2004) https://doi.org/10.1117/12.560195

KEYWORDS: Waveguides, Sensors, Cladding, Signal to noise ratio, Waveguide sensors, Beam propagation method, Numerical simulations, Biosensors, Finite-difference time-domain method, Near field scanning optical microscopy

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Proceedings Article | 22 October 2004 Paper

Microfluidic passive-cavity interferometer-based biosensor

Hua Shao, Dhiraj Kumar, Kevin Lear

Proceedings Volume 5557, (2004) https://doi.org/10.1117/12.560002

KEYWORDS: Microfluidics, Optical spheres, Refractive index, Resonators, Biosensors, Interferometers, Glasses, Mirrors, Spectroscopy, Gaussian beams

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Proceedings Article | 16 June 2004 Paper

High-speed polyimide-planarized vertical-cavity surface-emitting lasers

Ahmad AL-Omari, Kevin Lear

Proceedings Volume 5364, (2004) https://doi.org/10.1117/12.532016

KEYWORDS: Vertical cavity surface emitting lasers, Capacitance, Modulation, Oxides, Metals, Gallium, Aluminum, Resistance, Mirrors, Semiconductors

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Proceedings Article | 16 June 2004 Paper

Beam divergence angle distribution dependence on data pattern

Sulaiman Al-Sowayan, Kevin Lear

Proceedings Volume 5364, (2004) https://doi.org/10.1117/12.532272

KEYWORDS: Vertical cavity surface emitting lasers, Solids, Optics manufacturing, Gain switching, Fiber lasers, Hole burning spectroscopy, Modulation, Multimode fibers, Light emitting diodes, Transmitters

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Proceedings Article | 16 June 2004 Paper

Reliability of 980-nm laser diodes based on Novalux extended-cavity surface-emitting laser (NECSEL) concept

Vincent Doan, Glen Carey, Hailong Zhou, Aram Mooradian, Ian Jenks, Alan Lewis, Kevin Lear

Proceedings Volume 5364, (2004) https://doi.org/10.1117/12.529497

KEYWORDS: Semiconductor lasers, Reliability, Semiconducting wafers, Failure analysis, Data modeling, Instrument modeling, Vertical cavity surface emitting lasers, Quantum wells, Laser damage threshold, Telecommunications

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Proceedings Article | 19 June 2003 Paper

High-power high-brightness 980-nm lasers based on the extended cavity surface emitting lasers concept

Eva Strzelecka, John McInerney, Aram Mooradian, Alan Lewis, Andrei Shchegrov, Dicky Lee, Jason Watson, Keith Kennedy, Glen Carey, Hailong Zhou, Wonill Ha, Brad Cantos, William Hitchens, David Heald, Vincent Doan, Kevin Lear

Proceedings Volume 4993, (2003) https://doi.org/10.1117/12.479437

KEYWORDS: Semiconductor lasers, Mirrors, Laser development, High power lasers, Reflectivity, Lithium, Vertical cavity surface emitting lasers, Transmission electron microscopy, Second-harmonic generation

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Proceedings Article | 17 June 2003 Paper

Electrically pumped fluidic cavity (EPFC) VCSEL for the detection of biologic agents

Tao Yu, Tao Ao, Klaus Hartinger, Hua Shao, Carl Wilmsen, Kevin Lear, Kent Geib, Stewart Feld

Proceedings Volume 4994, (2003) https://doi.org/10.1117/12.473599

KEYWORDS: Vertical cavity surface emitting lasers, Biosensors, Mirrors, Biological detection systems, Microfluidics, Reflectivity, Biological weapons, Water, Dielectric mirrors, Glasses

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Proceedings Article | 11 March 2003 Paper

High brightness 980 nm pump lasers ased on the Novalux extended cavity surface-emitting laser (NECSEL) concept

John McInerney, Aram Mooradian, Alan Lewis, Andrei Shchegrov, Eva Strzelecka, Dicky Lee, Jason Watson, Michael Liebman, Glen Carey, Arvydas Umbrasas, Charles Amsden, Brad Cantos, William Hitchens, David Heald, Vincent Doan, J. Cannon, Kevin Lear

Proceedings Volume 4947, (2003) https://doi.org/10.1117/12.476231

KEYWORDS: Transmission electron microscopy, Mirrors, Single mode fibers, Fiber coupled lasers, Reflectivity, Fiber couplers, Laser applications, Second-harmonic generation, Semiconductor lasers

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Proceedings Article | 29 July 1997 Paper

Surface-emitting laser technology and its application to the space radiation environment

Richard Carson, Edward Taylor, Alan Paxton, Harald Schone, Kent Choquette, Hong Hou, Mial Warren, Kevin Lear

Proceedings Volume 10288, 1028806 (1997) https://doi.org/10.1117/12.278759

KEYWORDS: Laser applications, Vertical cavity surface emitting lasers, Satellite communications, Satellites, Ionizing radiation, Sensors, Data communications, Reliability, Space operations, Radiation effects

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Proceedings Article | 4 April 1997 Paper

Low-power multichip module and board-level links for data transfer

Richard Carson, Terry Hardin, Mial Warren, Kevin Lear, Michael Lovejoy, Pamela Seigal, David Craft, Paul Enquist

Proceedings Volume 3005, (1997) https://doi.org/10.1117/12.271077

KEYWORDS: Vertical cavity surface emitting lasers, Receivers, Lenses, Microlens, Tolerancing, Sensors, Pulsed laser operation, Resistors, Capacitance, Optical alignment

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Proceedings Article | 4 April 1997 Paper

Highly uniform and reproducible visible to near-infrared vertical-cavity surface-emitting lasers grown by MOVPE

Hong Hou, Kent Choquette, B. Hammons, William Breiland, Mary Crawford, Kevin Lear

Proceedings Volume 3003, (1997) https://doi.org/10.1117/12.271070

KEYWORDS: Vertical cavity surface emitting lasers, Doping, Aluminum, Calibration, Semiconducting wafers, Reflectivity, Gallium arsenide, Quantum wells, Silicon, Mirrors

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Proceedings Article | 10 April 1996 Paper

Life-testing oxide-confined VCSELs: too good to last?

Kevin Lear, Sean Kilcoyne, Richard Schneider, J. Nevers

Proceedings Volume 2683, (1996) https://doi.org/10.1117/12.237682

KEYWORDS: Oxides, Vertical cavity surface emitting lasers, Semiconductor lasers, Reliability, Failure analysis, Electroluminescence, Laser damage threshold, Quantum wells, Mirrors, Oxidation

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Proceedings Article | 30 January 1996 Paper

Low-power approaches for parallel free-space photonic interconnects

Richard Carson, Michael Lovejoy, Kevin Lear, Mial Warren, Pamela Seigal, David Craft, Sean Kilcoyne, Gary Anthony Patrizi, Olga Blum-Spahn

Proceedings Volume 10284, 1028403 (1996) https://doi.org/10.1117/12.229271

KEYWORDS: Optical interconnects, Vertical cavity surface emitting lasers, Telecommunications, Reliability, Optoelectronics, Heterojunctions, Transistors, Micro optics, Packaging, Interfaces

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Proceedings Article | 19 June 1995 Paper

Comprehensive numerical model for cw vertical-cavity surface-emitting lasers

G. Ronald Hadley, Kevin Lear, Mial Warren, Kent Choquette, Jeff Scott, Scott Corzine

Proceedings Volume 2399, (1995) https://doi.org/10.1117/12.212511

KEYWORDS: Quantum wells, Instrument modeling, Vertical cavity surface emitting lasers, Mirrors, Continuous wave operation, Cladding, Diffusion, Quantum efficiency, Silicon, Oxidation

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Proceedings Article | 28 April 1995 Paper

Polarization characteristics, control, and modulation of vertical-cavity surface emitting lasers

Kent Choquette, Kevin Lear, Richard Schneider, Ronald Leibenguth, Jeffrey Figiel, Sean Kilcoyne, Mary Crawford, John Zolper

Proceedings Volume 2382, (1995) https://doi.org/10.1117/12.208441

KEYWORDS: Polarization, Vertical cavity surface emitting lasers, Modulation, Semiconducting wafers, Switching, Polarization control, Crystals, Gallium arsenide, Optical alignment, Second-harmonic generation

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Proceedings Article | 10 April 1995 Paper

Integration of diffractive lenses with addressable vertical-cavity laser arrays

Mial Warren, Tu Du, Joel Wendt, G. Allen Vawter, Richard Carson, Kevin Lear, Sean Kilcoyne, Richard Schneider, John Zolper

Proceedings Volume 2398, (1995) https://doi.org/10.1117/12.206343

KEYWORDS: Vertical cavity surface emitting lasers, Lenses, Receivers, Optical interconnects, Etching, Gallium arsenide, Lens design, Prototyping, Measurement devices, Electron beam lithography

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Proceedings Article | 2 June 1994 Paper

Phase-locked arrays of vertical-cavity surface-emitting lasers

Mial Warren, Kevin Lear, Paul Gourley, G. Ronald Hadley, J. Lott, G. Allen Vawter, Scott Chalmers, Thomas Brennan, B. Hammons, John Zolper

Proceedings Volume 2145, (1994) https://doi.org/10.1117/12.177131

KEYWORDS: Vertical cavity surface emitting lasers, Mirrors, Reflectivity, Modulation, Phase shift keying, Near field, Etching, Near field optics, Gallium arsenide, Dielectric mirrors

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Proceedings Article | 2 May 1994 Paper

Reconfigurable optical switches with monolithic electrical-to-optical interfaces

Julian Cheng, Ping Zhou, John Zolper, Kevin Lear, G. Allen Vawter, Ronald Leibenguth, A. Adams

Proceedings Volume 2153, (1994) https://doi.org/10.1117/12.174522

KEYWORDS: Vertical cavity surface emitting lasers, Switches, Modulation, Optical switching, Optoelectronics, Integrated optics, Binary data, Interfaces, Heterojunctions, Channel projecting optics

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Showing 5 of 35 publications

Conference Committee Involvement (13)

Vertical-Cavity Surface-Emitting Lasers XIX

11 February 2015 | San Francisco, California, United States

Vertical-Cavity Surface-Emitting Lasers XVIII

6 February 2014 | San Francisco, California, United States

Vertical-Cavity Surface-Emitting Lasers XVII

6 February 2013 | San Francisco, California, United States

Vertical-Cavity Surface-Emitting Lasers XVI

25 January 2012 | San Francisco, California, United States

Vertical-Cavity Surface-Emitting Lasers XV

26 January 2011 | San Francisco, California, United States

Showing 5 of 13 Conference Committees

Course Instructor

SC053: Testing and Reliability of Semiconductor Lasers

This course covers device physics, testing, lifetime and reliability evaluations of semiconductor lasers. The features of semiconductor lasers that are relevant to the device performance and reliability are briefly reviewed. Various laser characterization methods are described. Techniques for evaluation of laser lifetime and factors affecting laser reliability are discussed. Recent developments in semiconductor lasers are presented in the context of their impact on testing and reliability.

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