Joshua M Doria

Title: The Innovative Contributions of Joshua M. Doria

Introduction

Joshua M. Doria is a prominent inventor based in Malibu, California, known for his significant contributions to the field of optical materials. With a track record of two patents, Doria has developed advanced methods for growing crystalline optical films that have substantial applications in various technological fields.

Latest Patents

Doria's latest patent focuses on a groundbreaking method for growing crystalline optical films on silicon (Si) substrates, which exhibit extremely small optical loss in the infrared (IR) spectrum due to hydrogenation of the crystalline optical films. This innovative process enables the growth of thick stoichiometric crystalline and IR-transparent optical PCMO (Praseodymium Calcium Manganese Oxide) material without the necessity of a seed layer prior to deposition. The sputter deposition is executed in an oxygen-free inert gas environment, effectively preventing the decomposition of the PCMO material. Notably, this method eliminates the requirement for post-deposition annealing in high-temperature oxygen furnaces, although annealing can enhance transparency at IR wavelengths. The deposition process involves multiple cycles at high temperatures (≥450° C.), followed by substantial cooling (<50° C.) of the substrates. If an anneal is applied in a hydrogen environment, it results in PCMO films with exceptionally low optical loss, indicated by an optical extinction coefficient (k) of less than 0.001 across the entire IR range.

Career Highlights

Joshua M. Doria has established himself as a leading expert in optical materials technology through his tenure at HRL Laboratories, LLC. His innovative work has contributed significantly to advancing materials science and engineering, particularly in the development of materials with enhanced optical properties for various applications.

Collaborations

Doria has collaborated with talented professionals in the field, including Kyung-Ah Son and Jeong-sun Moon. These collaborations have fostered an environment of innovation that has propelled forward the research and development of new optical materials and technologies.

Conclusion

Joshua M. Doria's innovative methods in the growth of crystalline optical films position him as a valuable contributor to the field of materials science. His patents not only reflect his inventive capabilities but also promise significant advancements in technology, particularly in optical applications. As he continues to collaborate with other experts in the industry, his future contributions are anticipated to push the boundaries of what is possible in the realm of optical materials.