Gerald D Bacher

Title: **Gerald D Bacher: Innovator in Laser Measurement and Holographic Storage**

Introduction:

Gerald D Bacher, an accomplished inventor based in Santa Ana, CA, has made significant contributions to the fields of laser measurement and holographic storage. With two patents to his name, Bacher's innovations have paved the way for advancements in technology that utilize laser apparatus and photorefractive materials.

Latest Patents:

Bacher's first notable patent is the **Single Beam Laser Surface Velocity and Displacement Measurement Apparatus**. This invention introduces a single-beam laser apparatus designed for measuring surface velocity at acoustic frequencies and surface displacement at ultrasonic frequencies. It features a source laser and specialized optics that direct the laser beam at normal incidence to a surface. The patent also incorporates a photo EMF detector which processes the reflected laser beam, providing outputs that are directly proportional to the three orthogonal components of surface velocity or displacement.

His second significant patent is the **Double-Doped BaTiO.sub.3 Crystal for Holographic Storage**. This innovative material comprises BaTiO.sub.3 that is double-doped with two different species, each having multiple valence states. One dopant, such as cerium, is positioned near the midpoint of the barium titanate bandgap, while the other, like rhodium, is closer to the valence band edge. This unique combination enhances its performance as a holographic storage medium, allowing for nondestructive read-out capabilities and improving the storage time of recorded information.

Career Highlights:

Throughout his career, Bacher has worked with several prestigious organizations. Notably, he has held positions at **Lasson Technologies, Inc.** and **Hughes Electronics Corporation**, where he applied his expertise in laser technology and material science to drive projects forward.

Collaborations:

Gerald D Bacher has collaborated with talented coworkers such as Marvin B Klein and Barry A Wechsler. These partnerships have contributed to the development and refinement of his patents, showcasing the collaborative spirit present in innovative endeavors.

Conclusion:

Gerald D Bacher exemplifies the essence of innovation through his contributions in laser measurement technologies and photorefractive materials. His patents not only reflect his dedication to advancing technology but also highlight the significant impact that individual inventors can have in various fields. As he continues to push the boundaries of what's possible, Bacher stands as an inspiration for aspiring inventors and researchers.