Peter J De Groot

Title: Innovations of Peter J De Groot

Introduction

Peter J De Groot is a notable inventor based in Bethel, CT (US). He has made significant contributions to the field of optical systems, holding a total of 5 patents. His work primarily focuses on advanced laser technologies and their applications in radar and measurement systems.

Latest Patents

One of his latest patents is the "Laser Diode Radar with Extended Range." This optical radar system utilizes a laser diode and an external cavity formed by a partial reflector. The system reflects a portion of the laser beam back into the diode while allowing another portion to pass out for backscatter from a target. The emission has a beat frequency related to the target's velocity, and a frequency chirp is introduced by oscillating the partial reflector. This results in a modulation frequency that corresponds to the target's range, with a photodetector and processor determining both velocity and range.

Another significant patent is the "Laser Diode Interferometer." This laser system measures dimensional aberrations across a target surface using a diverging beam of laser emission produced by a laser diode. A mask with an aperture can be moved to translate the aperture to selected locations laterally with respect to the beam. The mask blocks emission from impinging on the target except for the emission that transits through the aperture. Reflected emission returns through the aperture back into the laser diode, and an AC current is added to modulate the emission. A lock-in amplifier of a photodetector signal adds feedback current to the driver current to lock in the phase angle, allowing the feedback current to measure the aberrations.

Career Highlights

Peter has worked with several prominent companies throughout his career, including the Perkin-Elmer Corporation and Hughes Danbury Optical Systems, Inc. His experience in these organizations has contributed to his expertise in optical systems and laser technologies.

Collaborations

Throughout his career, Peter has collaborated with notable individuals such as Gregg M Gallatin and Kotik Lee. These collaborations have likely enriched his work and led to innovative advancements in his field.

Conclusion

Peter J De Groot is a distinguished inventor whose contributions to laser technology and optical systems have made a significant impact. His patents reflect his innovative spirit and dedication to advancing technology in meaningful ways.