Tomoo Yanase

Title: The Innovations of Tomoo Yanase

Introduction

Tomoo Yanase is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 4 patents. His work focuses on improving the efficiency and reliability of semiconductor lasers and light-emitting elements.

Latest Patents

One of Yanase's latest patents is for a buried heterostructure semiconductor laser with high resistivity. This innovative design features high resistive burying layers positioned on both sides of the active region, allowing for high-speed modulation and enhanced quantum efficiency. The design minimizes capacitance and leakage current, which are critical for performance. Additionally, the patent includes improvements to the fabrication process, ensuring that the reliability of the laser is maintained by preventing impurity diffusion from the burying layers to the active region.

Another notable patent involves surface-emitting semiconductor elements. This invention describes a light-emitting element, such as a laser or light-emitting diode, that incorporates at least one active light-emitting layer on a semi-insulating substrate. The design includes p-type and n-type semiconductor regions that contact opposite sides of the active layer, which has a narrower band gap than the surrounding semiconductor regions. This multilayer structure enhances the light-emitting capabilities of the device.

Career Highlights

Throughout his career, Tomoo Yanase has worked with notable companies, including NEC Corporation and Nippon Electric Co., Ltd. His experience in these organizations has contributed to his expertise in semiconductor technology and innovation.

Collaborations

Yanase has collaborated with esteemed colleagues such as Ikuo Mito and Shigeo Sugou. Their combined efforts have further advanced the field of semiconductor research and development.

Conclusion

Tomoo Yanase's contributions to semiconductor technology through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the industry, paving the way for future innovations in light-emitting devices and lasers.