Company Filing History:
1 out of 1 
1 out of 902 Years Active: 1993-1998
Title: Paul Rasmussen: Innovator in Optical Measurement Technologies
Introduction
Paul Rasmussen is a notable inventor based in Livermore, CA (US). He has made significant contributions to the field of optical measurement technologies, holding a total of 2 patents. His work focuses on improving methods for measuring reflectance spectra and enhancing laser beam homogenization.
Latest Patents
Rasmussen's latest patents include the "Broadband Microspectro-Reflectometer" and the "Coherence Delay Augmented Laser Beam Homogenizer." The Broadband Microspectro-Reflectometer presents an improved method and apparatus for measuring the relative reflectance spectra of an observed sample. This invention utilizes a broadband visible and ultraviolet beam that is split into a sample beam and a reference beam. The sample beam is reflected off the surface of the sample, allowing for a comparison of spectra to determine the relative reflectance spectrum. Additionally, the autofocus system in this invention features both a course-focus mode and a fine-focus mode, enhancing the precision of the measurements.
The Coherence Delay Augmented Laser Beam Homogenizer addresses geometrical restrictions on laser beam homogenizers by employing a coherence delay line. This innovation separates a coherent input beam into several components, each with a path length difference equal to a multiple of the coherence length. The components recombine incoherently at the output, resulting in a more uniform spatial intensity suitable for applications in microlithography and laser pantography.
Career Highlights
Throughout his career, Paul Rasmussen has worked with prominent organizations, including Kla-Tencor Corporation and the United States Department of Energy. His expertise in optical technologies has made him a valuable asset in these institutions.
Collaborations
Rasmussen has collaborated with notable coworkers such as Adam Eales Norton and Chester L. Mallory. Their combined efforts have contributed to advancements in the field of optical measurement.
Conclusion
Paul Rasmussen's innovative work in optical measurement technologies has led to significant advancements in the field. His patents reflect a commitment to improving measurement techniques and enhancing the capabilities of laser technologies.