Walter L Hales

Title: Walter L. Hales: Innovator in Electro-Optic Field Sensing

Introduction

Walter L. Hales is a notable inventor based in Huntsville, Alabama. He has made significant contributions to the field of electro-optic sensing technology. With a total of 3 patents to his name, Hales has developed innovative solutions that enhance the measurement of electric fields.

Latest Patents

Hales' latest patents include the Nonintrusive Electro-Optic Field Sensor and the Lateral-Shearing Electro-Optic Field Sensor. The Nonintrusive Electro-Optic Field Sensor utilizes the properties of electro-optic crystals, which change their index of refraction in the presence of an electric field. This crystal is placed inside the resonant cavity of a Fabry-Perot type interferometer. Laser light traveling through the cavity and the crystal experiences a modified optical path length when an electric field is present. The resulting fringe pattern at the focal plane is observed and used to detect and measure the ambient electric field.

The Lateral-Shearing Electro-Optic Field Sensor employs a lateral-shearing interferometer in conjunction with an electro-optic crystal and a coherent light source. This device measures the waveform of an electromagnetic pulse or a microwave pulse in free space. Depending on the size of the electro-optic crystal used, the device can measure frequencies as high as 20 GHz.

Career Highlights

Walter L. Hales is currently associated with the U.S. Government as represented by the Secretary of the Army. His work focuses on advancing technologies that improve the detection and measurement of electric fields.

Collaborations

Hales collaborates with James D. Holder, contributing to the development of innovative sensing technologies.

Conclusion

Walter L. Hales is a distinguished inventor whose work in electro-optic field sensing has led to significant advancements in the field. His patents reflect a commitment to innovation and excellence in technology.