Thomas C Marshall

Title: Thomas C Marshall: Innovator in Free Electron Laser Technology

Introduction

Thomas C Marshall is a notable inventor based in New York, NY (US), recognized for his contributions to the field of free electron laser technology. He holds 2 patents that showcase his innovative approach to generating high-power radiation.

Latest Patents

Marshall's latest patents include a free electron laser using a relativistic beam with spiraling electrons. This invention describes a free electron laser (FEL) that generates high-power radiation in a region of increasing guiding magnetic field before injection into an undulating low magnetic field. The design features an electron beam propagating along a guiding magnetic field of approximately 10 kilo gauss inside a hollow metallic tube, which serves as a waveguide. An undulator produces a periodic magnetic field, allowing the electron motion to have a substantial transverse component, leading to amplified radiation at a calculable frequency.

Another significant patent is the free electron laser employing an expanded hollow intense electron beam. This invention enables the generation of very high-power pulses of coherent electromagnetic radiation that are continuously tunable in frequency. The hollow relativistic electron beam is projected along the longitudinal axis of an evacuated drift tube, where it interacts with a second periodic radial magnetic field. The frequency can be varied by changing the electron velocity or the periodicity of the radial magnetic field. This device can function as both an oscillator and an amplifier, incorporating resonant cavity defining mirrors and utilizing a Smith-Fox interferometer to narrow the linewidth of the generated coherent radiation.

Career Highlights

Throughout his career, Thomas C Marshall has worked with significant organizations, including the United States of America as represented by the Secretary of the Air Force and the USA as represented by the Secretary of the Navy. His work has had a profound impact on the development of advanced laser technologies.

Collaborations

Marshall has collaborated with notable individuals in his field, including S Perry Schlesinger and Arthur A Grossman. Their combined expertise has contributed to the advancement of free electron laser technology.

Conclusion

Thomas C Marshall's innovative work in free electron laser technology has established him as a prominent figure in the field. His patents reflect a deep understanding of electromagnetic radiation and its applications, paving the way for future advancements in laser technology.