Zhenzhu Shi

Title: Zhenzhu Shi and a Barium Strontium Titanate Photorefractive Device

Introduction

Zhenzhu Shi is an inventor associated with Fuzhou, China, and the Chinese Academy of Sciences. Her work includes a patent for a photorefractive device made from barium strontium titanate (BST) single crystal.

Latest Patents

Shi’s listed patent, “Barium strontium titanate photorefractive device and method for making,” describes a device made from a single crystal with a composition substantially represented by Ba₁₋ₓSrₓTiO₃, where 0.01 < x < 0.1. The manufacturing method involves growing the crystal using the Czochralski technique, annealing it in an oxidizing atmosphere, machining it into a polished cuboid, and mechanically and electrically poling it into a single-domain state.

The device may consist of a piece of the single-domain crystal or an optoelectronic assembly using the crystal as its core component. The patent reports performance similar to a device made from barium titanate, including reflectivity as high as 52% when used as a self-pumped phase conjugator. It also describes potential manufacturing advantages over barium titanate, including a typical growth period of three to four days, simpler equipment and techniques, higher yield, and easier production of larger crystal cuboids. Shi is listed with 1 patent.

Career Highlights

Shi’s listed patent highlights research into photorefractive materials and crystal-based optoelectronic devices. The invention focuses on both device performance and practical methods for producing BST crystals.

Collaborations

The patent information names Yihao Huang and Yaying Weng as Shi’s coworkers. The work is associated with the Chinese Academy of Sciences.

Conclusion

Zhenzhu Shi’s patent presents a BST single-crystal photorefractive device and a manufacturing approach intended to support efficient production and strong optical performance.