Paul P Tesch

Title: Paul P. Tesch: A Pioneer in Electron Emission and Plasma Technology

Introduction: Paul P. Tesch is an innovative inventor based in Portland, OR, who has made significant contributions in the fields of electron emission and plasma technology. With a remarkable portfolio of 13 patents, Tesch has developed cutting-edge technologies that have the potential to advance various applications in science and engineering.

Latest Patents: Among his latest patents is an *Electron Emitter Source*, which features a low work function material including Lanthanum hexaboride or Iridium Cerium acting as the emitter. This innovative design incorporates a cylinder base made from a high work function material with a cone shape, where the low work function material is embedded but exposed at the cone's end. The structure functions effectively when heated and biased to a negative voltage relative to the anode, accompanied by a positively biased anode electrode and a Wehnelt electrode with an aperture that allows the cylindrical base to extend through.

Another significant patent of Tesch's is the *Inductively Coupled Plasma Ion Source with Tunable Radio Frequency Power*. This invention includes an induction coil situated adjacent to a reactor chamber, aimed at inductively coupling power into the plasma from a radio frequency source, enabling negative and positive ion extraction. The inventive method operates by providing radio frequency power to the induction coil with a variable frequency RF amplifier connected to a matching network consisting mainly of fixed-value capacitors. The tuning of the RF frequency achieves impedance matching, which can also utilize RF power sources that employ lateral diffused metal oxide semiconductor field effect transistor-based amplifiers.

Career Highlights: Tesch has contributed immensely to the field throughout his career. He has worked with notable companies such as FEI Company and Oregon Physics, LLC, where he applied his expertise in designing and developing advanced electron and plasma technologies. His successful patent filings reflect his deep understanding of the underlying physics and practical applications of these systems.

Collaborations: Throughout his journey, Tesch has collaborated with fellow innovators like Noel S. Smith and Mark Utlaut. Their collective expertise has fostered an environment ripe for innovation, enhancing the development and implementation of Tesch's groundbreaking technologies.

Conclusion: Paul P. Tesch stands out as a prominent figure in the realms of electron emission and plasma technology. His inventive spirit and dedication to advancing science through his 13 patents have made a remarkable impact in various industries. As he continues to innovate, Tesch’s work exemplifies the transformative power of invention in solving complex technological challenges.