John Lopata

Title: The Innovative Contributions of John Lopata

Introduction

John Lopata is a notable inventor based in North Plainfield, NJ (US). He has made significant contributions to the field of optics and microelectronics, holding a total of 5 patents. His work has had a profound impact on the development of advanced technologies.

Latest Patents

One of his latest patents is the "Lateral injection vertical cavity surface-emitting laser." This invention features a lateral injection VCSEL that comprises upper and lower mirrors forming a cavity resonator, an active region disposed in the resonator, and high conductivity upper and lower contact layers located on opposite sides of the active region. The design includes upper and lower electrodes disposed on the upper and lower contact layers, respectively, and a current guide structure that constrains current to flow in a relatively narrow channel through the active region. A key characteristic of this invention is that a portion of the lower contact layer extending under the top electrode has relatively high resistivity. This feature serves two purposes: it suppresses current flow in parallel paths, making the current density distribution in the aperture more favorable for the fundamental mode, and it reduces parasitic capacitance.

Another significant patent is the "Structure for absorption of hydrogen in a package." This invention discloses an optical and/or microelectronics hermetic package that includes a member for absorbing hydrogen from the internal package ambient. The member consists of a first layer that forms a hydride and a second layer that forms solvated hydrogen upon exposure to molecular hydrogen in the package. The second layer acts as a one-way valve for transporting hydrogen to the first layer, which locks up the hydrogen.

Career Highlights

Throughout his career, John Lopata has worked with prestigious organizations such as AT&T Bell Laboratories and Agere Systems Inc. His experience in these companies has allowed him to develop and refine his innovative ideas, contributing to advancements in technology.

Collaborations

John has collaborated with notable individuals in his field, including William Scott Hobson and Paul R. Berger. These collaborations have further enriched his work and expanded the impact of his inventions.

Conclusion

John Lopata's contributions to the fields of optics and microelectronics are significant and noteworthy. His innovative patents demonstrate his expertise and commitment to advancing technology. His work continues to influence the industry and inspire future innovations.