Jim J Chang

Title: Jim J Chang: Innovator in Laser Technology

Introduction

Jim J Chang is a notable inventor based in Dublin, California, who has made significant contributions to the field of laser technology. With a total of 5 patents to his name, Chang has developed innovative methods and apparatuses that enhance precision in micromachining and laser performance.

Latest Patents

One of Chang's latest patents is a "Method and apparatus for precision laser micromachining." This invention provides a system that utilizes a near diffraction limited, high repetition rate, short pulse length, visible wavelength laser. The system is designed to achieve superior surface quality in machined parts by combining a high-speed precision tilting mirror with suitable beam shaping optics. This allows for accurate positioning and scanning of energy on the workpiece, enabling the creation of complicated, high-resolution machining patterns. Additionally, a cover plate can be temporarily attached to the workpiece to capture vapors during the machining process, thus improving the overall quality of the machined area.

Another significant patent is the "Compact and highly efficient laser pump cavity." This design introduces a new, compact, side-pumped laser pump cavity that employs non-conventional optics for the injection of laser-diode light. The design includes elongated light concentration channels, which effectively trap pump radiation inside the chamber, leading to more uniform laser pumping and improved performance. This innovation also widens the acceptable radiation wavelength of the diodes, resulting in a more reliable and cost-effective laser performance.

Career Highlights

Throughout his career, Jim J Chang has worked with prominent organizations, including the United States Enrichment Corporation and the United States of America as represented by the United States. His work has significantly impacted the field of laser technology, showcasing his expertise and innovative spirit.

Collaborations

Chang has collaborated with notable individuals in his field, including Bruce E Warner and Ernest P Dragon. These collaborations have contributed to the advancement of his inventions and the overall progress in laser technology.

Conclusion

Jim J Chang is a distinguished inventor whose work in laser technology has led to groundbreaking innovations. His patents reflect a commitment to enhancing precision and performance in micromachining and laser applications. Chang's contributions continue to influence the industry and inspire future advancements.