Frank E Aspen

Title: Frank E Aspen: Innovator in Optical Data Storage

Introduction

Frank E Aspen is a notable inventor based in Saint Paul, MN (US), recognized for his contributions to the field of optical data storage. With a total of 9 patents to his name, Aspen has made significant advancements in mastering techniques that enhance the quality of data storage disks.

Latest Patents

One of his latest patents is focused on an anti-reflection optical data storage disk master. This invention describes mastering techniques that can improve the quality of a master used in data storage disk manufacturing. The techniques aim to enhance the resolution of features created on the master by reducing mastering noise. This is achieved by depositing a multi-layer structure adjacent to a master substrate layer, which includes an etch stop layer, an etch layer, and a photoresist layer. The thickness of each layer is carefully selected to generate substantially no reflectivity for at least one interface of the multi-layer structure, thereby eliminating stray light effects. The photoresist layer serves as a portable conformable mask (PCM) for the etch layer, which is etched through the contact mask to define a feature of the master. Additionally, the etch stop layer thickness may be minimized to reduce surface roughness of the multi-layer structure.

Another significant patent involves the fabrication of sandwiched construction media. In this embodiment, a holographic data storage medium consists of a first thermoplastic substrate portion and a second thermoplastic substrate portion, both having a thickness of less than approximately 2 millimeters. A holographic recording material is sandwiched between these two substrate portions, which helps avoid edge wedge problems by ensuring that the thermoplastic substrate portions are sufficiently thin.

Career Highlights

Throughout his career, Frank E Aspen has worked with prominent companies such as Imation Corporation and Minnesota Mining and Manufacturing Company. His work in these organizations has contributed to the development of innovative technologies in data storage.

Collaborations

Aspen has collaborated with notable individuals in the field, including Jathan D Edwards and Ramon F Hegel. These collaborations have further enriched his contributions to optical data storage technologies.

Conclusion

Frank E Aspen's innovative work in optical data storage has led to significant advancements in mastering techniques and holographic data storage media. His contributions continue to influence the industry and pave the way for future innovations.