Location History:
- Mountain View, CA (US) (1991)
- Woodside, CA (US) (1992)
- Sunnyvale, CA (US) (1996 - 1998)
Company Filing History:
Years Active: 1991-1998
Title: Innovations of John K Johnson
Introduction
John K Johnson is a notable inventor based in Sunnyvale, CA. He has made significant contributions to the field of optical systems, holding a total of 6 patents. His work primarily focuses on improving the performance of laser diodes, which are essential components in various technological applications.
Latest Patents
One of his latest patents is an optical system designed to enhance the brightness symmetry of a beam emitted from a laser diode. This system includes a tilt plate that displaces one half of the beam downward, along with a first beam steering prism that tilts the remaining half towards the first half. A second beam steering prism further aligns the two halves, improving the brightness symmetry by a factor of about five. This corrected beam can significantly enhance the performance of solid-state lasers that are end-pumped by broad area laser diodes or laser diode bars.
Another important patent by Johnson is a temperature correction circuit for wavelength stabilization in a laser. This innovative circuitry regulates the temperature of the laser diode based on its operating current. By monitoring the diode's current, the circuitry automatically adjusts the temperature to offset changes in the spectral output, ensuring stable performance and preventing large fluctuations in the operating current.
Career Highlights
John K Johnson is currently employed at Coherent, Inc., a company known for its advancements in laser technology. His work at Coherent has allowed him to apply his innovative ideas in practical applications, contributing to the company's reputation as a leader in the field.
Collaborations
Throughout his career, Johnson has collaborated with notable colleagues, including John Lawrence Nightingale and John A Trail. These collaborations have likely enriched his work and led to further advancements in laser technology.
Conclusion
John K Johnson's contributions to the field of optical systems and laser technology are noteworthy. His innovative patents and work at Coherent, Inc. demonstrate his commitment to advancing technology in meaningful ways.