James J Coleman

Title: Innovations of James J Coleman

Introduction

James J Coleman is a notable inventor based in Monticello, IL (US). He has made significant contributions to the field of optoelectronics, holding a total of 8 patents. His work primarily focuses on semiconductor lasers and waveguide technologies, showcasing his expertise and innovative spirit.

Latest Patents

Among his latest patents is the invention of a curved coupled waveguide array and laser. This semiconductor laser features an active region, claddings, and electrical contacts designed to stimulate emissions from the active region. The coupled waveguide guides the emission, incorporating a broad area straight coupling region that fans out into an array of narrower individual curved coupled waveguides at the output facet of the laser. The curvature of these waveguides is defined by Lorentzian functions, ensuring that the integral length of each individual curved coupled waveguide differs from adjacent ones by an odd number of half-wavelengths. This innovative design shapes the optical field output, allowing for high power output with a narrow beam shape.

Another significant patent involves a quantum well active region with three-dimensional barriers. This invention provides a quantum well active region for optoelectronic devices, consisting of barrier layers made from high bandgap material. A quantum well of low bandgap material is situated between these barrier layers, with three-dimensional high bandgap barriers integrated within the quantum well. This design enhances the performance of semiconductor lasers, making them more efficient and effective.

Career Highlights

James J Coleman has had a distinguished career, working with esteemed institutions such as the University of Illinois and the Board of Trustees of the University of Illinois. His contributions to research and development in the field of optoelectronics have been invaluable.

Collaborations

Throughout his career, Coleman has collaborated with notable colleagues, including Victor C Elarde and Mark S Zediker. These partnerships have further enriched his work and expanded the impact of his inventions.

Conclusion

James J Coleman is a prominent inventor whose work in semiconductor lasers and waveguide technologies has significantly advanced the field of optoelectronics. His innovative patents and collaborations reflect his dedication to pushing the boundaries of technology.