Ta-Ming Fang

Title: Ta-Ming Fang: Innovator in Semiconductor Characterization and Vision Correction Technologies

Introduction

Ta-Ming Fang is a notable inventor based in Belmont, MA (US). He holds a total of 3 patents that showcase his contributions to the fields of semiconductor characterization and vision correction technologies. His innovative approaches have the potential to significantly impact these industries.

Latest Patents

One of Ta-Ming Fang's latest patents is a method and apparatus for structure characterization of layered semiconductor structures. This new technique exploits the AC Hall effect to characterize these structures. The method utilizes laser signals transmitted through optical fibers in the presence of a DC magnetic bias field. The polarization of the optical signal is rotated due to the Lorentz force from the AC Hall effect, allowing the reflected waves to provide information on the Hall mobility of charge carriers. The calculations indicate that the AC Hall reflection coefficient is sufficient for measurement. The theory is comprehensive, incorporating depth profiling into the formulation.

Another significant patent is an energy delivery system controllable to continuously deliver laser energy. This invention pertains to an optical system designed for performing laser photorefractive keratectomy operations on the cornea for vision correction. The system includes a laser source that emits a laser beam, along with a beam processing subsystem that generates a processed laser beam suitable for the keratectomy operation. Additionally, the energy delivery subsystem features a continuous energy-delivery control device, which may consist of time-varying movable slits, rotating diaphragms, or a combination of lens systems with moving screens. This allows for precise optical control of the energy delivered to different areas of the cornea during the vision correction procedure.

Career Highlights

Throughout his career, Ta-Ming Fang has worked with various organizations, including the Massachusetts Technological Laboratory, Inc. His work has been instrumental in advancing technologies related to semiconductor structures and laser applications in medical procedures.

Collaborations

Ta-Ming Fang has collaborated with notable individuals in his field, including Hoton How and Sun-Sheng Shei. These collaborations have contributed to the development and refinement of his innovative technologies.

Conclusion

Ta-Ming Fang's contributions to semiconductor characterization and vision correction technologies highlight his role as a significant inventor. His patents reflect a commitment to advancing these fields through innovative solutions.