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Title: Michael A Johnson: Innovator in Laser Isotope Separation
Introduction
Michael A Johnson is a notable inventor based in Pleasanton, CA (US). He has made significant contributions to the field of laser technology, particularly in isotope separation. With a total of 4 patents, his work has advanced the understanding and application of laser processes in various scientific domains.
Latest Patents
One of Johnson's latest patents is focused on the atomic vapor laser isotope separation of the lead-210 isotope. This innovative process involves an isotopically selective laser method for the removal of Pb-210 from natural lead. The technique utilizes a one-photon near-resonant and two-photon resonant excitation of Rydberg levels, followed by field ionization and electrostatic extraction. The design takes advantage of the large first excited state cross section, requiring only modest laser fluences. Additionally, the non-resonant process effectively mitigates issues such as stimulated Raman Gain and direct absorption of light by Pb-207.
Another significant patent is the heterodyne laser instantaneous frequency measurement system. This system employs the heterodyning of a pulsed laser beam with a continuous wave laser beam to generate a beat signal. A controller or computer processes this signal to determine both the average frequency of the laser pulse and any frequency changes during the pulse.
Career Highlights
Throughout his career, Johnson has worked with esteemed organizations, including the United States of America as represented by the Department of Energy. His expertise in laser technology has positioned him as a key figure in the development of advanced measurement systems and isotope separation techniques.
Collaborations
Johnson has collaborated with notable colleagues such as Richard W Wyeth and Michael A Globig. Their combined efforts have contributed to the advancement of laser technologies and their applications in various scientific fields.
Conclusion
Michael A Johnson's innovative work in laser isotope separation and frequency measurement systems showcases his significant contributions to science and technology. His patents reflect a deep understanding of laser processes and their practical applications, solidifying his reputation as a leading inventor in his field.