Company Filing History:
1 out of 87 
1 out of 832,718 Years Active: 1980-1997
Title: The Innovative Contributions of Evan R Pugh
Introduction
Evan R Pugh is a notable inventor based in Lexington, MA (US). He holds 2 patents that showcase his expertise in the field of laser technology. His work has significantly contributed to advancements in solid-state dye lasers and aerodynamic windows.
Latest Patents
One of his latest patents is the "Solid State Dye Laser Host." This invention incorporates a polyacrylamide gelatin solid host doped with a laser dye such as rhodamine 6G and pyrromethene 556. The host is aligned within a lasing cavity and is excited to fluorescence by a pumping laser, such as a second harmonic Nd:YAG. A container made from Pyrex or inorganic oxide glass encapsulates and protects the gel solid. Notably, the solid-state dye host exhibits 'self-healing' after photobleaching due to dye migration within the encapsulated form.
Another significant patent is the "Gas Laser Aerodynamic Window." This invention forms an aerodynamic window using a contiguous pair of gas jet streams driven at subsonic velocity across the entire cross-sectional area of an annular laser beam. One of the jet streams has a shear interface with the interior gas of the laser, and its index of refraction is matched to it. The other jet stream interfaces with the outside air into which the beam passes, also having a refraction index matched to the air. This matching minimizes optical distortion of the beam at the shear interfaces, while distortion produced at the boundary layer of the contiguous jet streams is minimized by equalizing their velocities.
Career Highlights
Evan R Pugh has worked with various companies, including Physical Sciences, Inc. His contributions to the field have been recognized and have paved the way for further innovations in laser technology.
Collaborations
Throughout his career, Evan has collaborated with notable individuals such as William J Kessler and Steven J Davis. These collaborations have enhanced his work and contributed to the success of his inventions.
Conclusion
Evan R Pugh's innovative contributions to laser technology through his patents demonstrate his significant impact in the field. His work continues to inspire advancements in optical technologies.
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