This inventor holds 10 USPTO granted patents. Top assignees: Acme Grating Ventures, LLC, Rockwell Collins, Inc., Other. Active years: 1987-2018.
Location History:
- Elizabeth, PA (US) (1987)
- Columbia, MD (US) (2000 - 2001)
- Ellicott City, MD (US) (2004 - 2018)
Company Filing History:
5 out of 5 
4 out of 3,014 
1 out of 834,307 Years Active: 1987-2018
Title: Thomas J Cullen: Innovator in Mode-Locked Laser Technology
Introduction
Thomas J Cullen is a notable inventor based in Ellicott City, MD (US). He has made significant contributions to the field of laser technology, holding a total of 10 patents. His work focuses on the development and stabilization of mode-locked lasers, which are essential in various applications, including telecommunications and precision measurements.
Latest Patents
Cullen's latest patents include innovative methods and systems for controlling the start-up and stabilization of mode-locked lasers. One of his patents describes a laser stabilization method that involves receiving a laser beam generated by a mode-locked laser. The method generates a current based on the received laser beam, which in turn creates a radio frequency (RF) waveform. This RF waveform is amplified to a suitable level for processing by a mixer connected to the mode-locked laser. Additionally, the phase of the amplified RF waveform is adjusted to compensate for environmental changes affecting the laser beam.
Another significant patent focuses on an environmentally robust and compact mode-locked laser. This invention integrates optical components into a single apparatus, interconnected via optical free-space coupling. The optical cavity path of the laser is minimized to less than ten meters, primarily utilizing optical gain fiber. A Fabry-Perot filter is matched to the laser pulse repetition frequency, which helps suppress supermode spurs in the phase noise spectrum, thereby reducing total timing jitter.
Career Highlights
Throughout his career, Thomas J Cullen has worked with several prominent companies, including Acme Grating Ventures, LLC and Rockwell Collins, Inc. His expertise in laser technology has made him a valuable asset in these organizations, contributing to advancements in optical systems.
Collaborations
Cullen has collaborated with notable professionals in his field, including Timothy E Hammon and John M Stockhausen. These collaborations have further enriched his work and contributed to the development of innovative laser technologies.
Conclusion
Thomas J Cullen is a distinguished inventor whose work in mode-locked laser technology has led to significant advancements in the field. His patents reflect a deep understanding of laser stabilization and environmental robustness, making him a key figure in optical innovation.