Yasumasa Nabeta

Title: Yasumasa Nabeta: Innovator in Acousto-Optic Technology

Introduction

Yasumasa Nabeta is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of acousto-optic technology. His innovative work has led to the development of a unique acousto-optic filter that utilizes advanced principles of diffraction.

Latest Patents

Nabeta holds 1 patent for his invention of an acousto-optic filter. This filter employs far-off-axis anisotropic Bragg diffraction, utilizing an optically anisotropic crystal. The design allows a light beam to travel at a large angle with respect to the crystalline axis, while an ultrasonic wave moves in a predetermined direction. The acousto-optic filter, which uses a paratellurite crystal, can tune the wavelength of visible light by adjusting the frequency of the ultrasonic wave in a low frequency range below 100 MHz. Remarkably, the ultrasonic power required for this filter is about 1/500 that of conventional acousto-optic filters. Additionally, the bandwidth of the transmitted light can be modified from several angstroms to several hundred angstroms by selecting the incident angle of the light.

Career Highlights

Nabeta is associated with Matsushita Electric Industrial Co., Ltd., where he has been able to apply his expertise in acousto-optic technology. His work has been instrumental in advancing the capabilities of optical devices.

Collaborations

He has collaborated with notable colleagues such as Tsutomu Yano and Koetsu Saito, contributing to the innovative environment at Matsushita Electric.

Conclusion

Yasumasa Nabeta's contributions to acousto-optic technology exemplify the impact of innovative thinking in the field of optics. His patented acousto-optic filter represents a significant advancement, showcasing the potential for efficiency and versatility in optical applications.