Mark A Zumberge

Title: Mark A Zumberge: Innovator in Optical Seismometry

Introduction

Mark A Zumberge is a prominent inventor based in San Diego, CA. He has made significant contributions to the field of optical seismometry, holding a total of 7 patents. His work focuses on developing advanced methods and devices for detecting seismic information through optical interferometry.

Latest Patents

One of his latest patents is the "Leaf-spring optical seismometer using fringe signals for seismic measurements." This invention discloses methods, structures, devices, and systems for implementing optical seismometers that detect seismic information based on optical interferometry. The device includes a first retroreflector attached to a mass of a seismometer and a second retroreflector attached to a member of the frame of the seismometer. The frame is structured to suspend the mass, and optical components are attached to the member of the frame, configured with the first and second retroreflectors to form an interferometer. A change in position of the mass is identified by detecting a change in the optical path of a light beam generated by a light energy source transmitted to the interferometer.

Another notable patent is "Resolving quadrature fringes of interferometer signals in real time." This invention involves techniques and devices for digitally resolving quadrature fringe signals from interferometers, such as optical interferometers and interferometer-based sensing devices. In this implementation, two quadrature fringe signals from an interferometer are sampled to obtain digital data samples. These samples are used to perform a linear least square fitting to establish coefficients for an ellipse traced by the two quadrature fringe signals as a phase difference changes. This digital processing allows for real-time processing of the signals.

Career Highlights

Mark A Zumberge has worked at the University of California, where he has contributed to various research projects and innovations in the field of seismology. His expertise in optical seismometry has positioned him as a leading figure in this area of research.

Collaborations

Throughout his career, Zumberge has collaborated with notable individuals such as Jonathan Berger and Eric L Canuteson. These collaborations have further enhanced his research and development efforts in optical seismometry.

Conclusion

Mark A Zumberge is a distinguished inventor whose work in optical seismometry has led to significant advancements in the field. His innovative