Jack A Crowell

Title: Innovations of Jack A. Crowell: A Leader in Crystalline Optical Films

Introduction: Jack A. Crowell, an accomplished inventor based in Camarillo, California, has made significant contributions to the field of optical materials. With a portfolio of four patents, his work primarily focuses on the growth of crystalline optical films, enhancing their performance in infrared applications.

Latest Patents: Among his notable inventions is a groundbreaking method for growing crystalline optical films on silicon substrates. This method enables the production of thick, stoichiometric crystalline optical PCMO (Praseodymium Calcium Manganese Oxide) material that is both highly transparent and capable of minimizing optical loss in the infrared spectrum. The innovative process utilizes sputter deposition in an oxygen-free inert gas environment, which aids in preventing the decomposition of the PCMO material during application. Remarkably, this technique eliminates the need for a seed layer prior to deposition and negates the necessity for post-deposition annealing in high-temperature oxygen furnaces. Nonetheless, an anneal may be applied in a hydrogen environment, allowing for hydrogenation of the film and yielding exceptional transparency with an optical extinction coefficient of less than 0.001 across the infrared range.

Career Highlights: Jack A. Crowell's career has been marked by advancements in the field of optical materials, significantly impacting various applications in technology and science. His work at Hrl Laboratories, LLC, has positioned him as a key innovator in developing methods that enhance the quality and performance of optical films.

Collaborations: Throughout his career, Crowell has collaborated with notable colleagues, including Wei L. Yi and Elias A. Flores. These partnerships have fostered an environment of innovation and have contributed to the development of cutting-edge technologies in their respective fields.

Conclusion: Jack A. Crowell continues to be a driving force in the realm of optical science, with his inventive methods paving the way for advancements in crystalline optical films. His dedication, expertise, and innovative spirit enhance the capabilities of optical materials and open new avenues for research and application in various high-tech industries.