Wilhelm F Hagen

Title: Wilhelm F. Hagen: Innovator in Laser Technology

Introduction

Wilhelm F. Hagen is a notable inventor based in Livermore, CA (US). He has made significant contributions to the field of laser technology, holding a total of 3 patents. His work focuses on improving the efficiency and effectiveness of laser beams through innovative methods.

Latest Patents

One of his latest patents is titled "Scattering Apodizer for Laser Beams." This invention discloses a method for apodizing a laser beam to smooth out the production of diffraction peaks caused by optical discontinuities. The method involves introducing a pattern of scattering elements that reduces peak intensity in regions of optical discontinuities. The pattern features smoothly tapering boundaries, allowing for a gradual change in the distribution density of the scattering elements. This design effectively minimizes diffraction effects that would otherwise occur. The apodizer pattern can be created by selectively blasting a transparent member's surface with fine abrasive particles, resulting in numerous minute pits. In one embodiment, this scattering apodizer pattern is utilized to mitigate diffraction patterns in a multiple element crystal array for harmonic conversion of a laser beam.

Another significant patent is "Multipass Laser Amplification with Near-Field Far-Field Optical." This invention presents two classes of optical configurations for high-power laser amplification. One configuration allows for near-field optical separation, while the other permits far-field optical separation. These configurations enable multiple passages of laser pulses through one or more amplifiers over an open optical path. They can reimage the amplifier or any part of the cavity on itself, suppressing laser beam intensity ripples that arise from diffraction and non-linear effects. The optical cavities combine multiple passes, spatial filtering, and optical reimaging, allowing sufficient time for laser gain recovery.

Career Highlights

Wilhelm F. Hagen is associated with the United States of America as represented by the United States. His work has significantly advanced the field of laser technology, showcasing his innovative spirit and dedication to research.

Collaborations

He has collaborated with notable individuals such as Mark A. Summers and Robert D. Boyd, contributing to the advancement of laser technology through teamwork and shared expertise.

Conclusion

Wilhelm F. Hagen's contributions to laser technology through his patents demonstrate his innovative approach to solving complex problems in the field. His work continues to influence advancements in laser applications and technology