Company Filing History:
Years Active: 1980-1982
Title: Innovations of Douglas J James
Introduction
Douglas J James is a notable inventor based in Kanata, Canada. He has made significant contributions to the field of laser technology, holding two patents that showcase his innovative spirit and technical expertise. His work focuses on improving the efficiency and functionality of carbon dioxide lasers and semiconductor applications.
Latest Patents
One of his latest patents is a "Gas recirculation system for carbon dioxide lasers." This invention describes a method and apparatus for reducing the gas consumption rate by controlling the gas composition in a repetitively pulsed high-pressure and/or high-energy density TE CO₂ laser. Detrimental gas species formed in the discharge are removed by chemical reaction in the gas phase, and the reaction products are eliminated by a trap in a recirculator loop. The primary detrimental species is oxygen, and the reducing gas added to remove this is hydrogen or deuterium. The resulting oxides of hydrogen or deuterium are then removed by a molecular sieve.
Another significant patent is "Laser controlled optical switching in semiconductors." This invention outlines a method and apparatus for switching an infrared radiation signal laser beam. A semiconductor, capable of transmitting the signal beam without damage, is provided, and the signal beam is incident at an angle, preferably Brewster's angle. The surface of the semiconductor is irradiated by a second laser beam, which has a sufficiently high frequency to produce free carriers in the semiconductor. This results in substantially total reflection of the signal beam from the semiconductor surface.
Career Highlights
Douglas J James works at Canadian Patents & Development Ltd., where he continues to innovate and develop new technologies. His contributions to the field of laser technology have positioned him as a key figure in advancing the capabilities of laser systems.
Collaborations
He has collaborated with notable coworkers, including Mahendra K Dosi and Anthony W Pasternak, who have contributed to his projects and innovations.
Conclusion
Douglas J James is a prominent inventor whose work in laser technology has led to significant advancements in the field. His patents reflect his commitment to innovation and his ability to solve complex technical challenges.