Sumitomo Chemical to Attend SPIE Photonics West 2026 to Exhibit its Compound Semiconductor Products and Present an Invited Talk

Sumitomo Chemical will participate in SPIE Photonics West 2026, the world’s largest optics and photonics conference and exhibition, to be held in San Francisco, California, the United States, from Tuesday, January 20 to Thursday, January 22, 2026. This conference, organized by the International Society for Optics and Photonics (SPIE), the leading society in this field, showcases a wide range of the latest optical and photonic technologies and applications, including optical communications, lasers, and optoelectronic devices.

Sumitomo Chemical offers compound semiconductor products that are garnering attention as next-generation materials. For optical and photonic applications, the Company is engaged in the research and development of gallium nitride (GaN) substrates, which are expected to meet the demand for higher laser output power, as well as InP (Indium Phosphide) epitaxial technology, which is expected to be applied to advanced fields such as photonic-electronic convergence devices.

At SPIE Photonics West 2026, the Company will exhibit GaN substrates for blue laser diodes and gallium arsenide (GaAs) epitaxial wafers used in vertical cavity surface emitting laser (VCSEL) applications. In addition, Shota Kaneki, ICT & Mobility Solutions Research Laboratory, Sumitomo Chemical, will present an invited talk at the conference on Monday, January 19, the day before the exhibition starts. You are invited to attend his invited talk and visit the Company’s exhibition booth.

1. Overview of the Exhibition
SPIE Photonics West 2026
Date: Tuesday, January 20 to Thursday, January 22, 2026
Venue: The Moscone Center, San Francisco, California, the United States
Website:  SPIE Photonics West Exhibition: 20 – 22 January 2026
Sumitomo Chemical’s booth number: 5533
(For more information, please see Sumitomo Chemical Co., Ltd. : SPIE Photonics West 2026 Exhibition.）

 2. Sumitomo Chemical’s Exhibitions
Compound semiconductor products:
- GaN substrates
Sumitomo Chemical provides high-quality GaN substrates used in optical and electronic devices. The Company is developing higher-quality GaN substrates that will improve the performance of highly efficient laser metal processing machines, mercury-free laser light source projectors, and other optical and electronic devices that contribute to reducing environmental impact.

- GaAs epitaxial wafers for use in VCSEL diodes
VCSELs are expected to be used in a broad range of applications, including facial recognition devices and light detection and ranging (LiDAR) devices. Sumitomo Chemical produces GaAs epitaxial wafers for VCSELs tailored to meet customer needs.

3. Sumitomo Chemical’s Invited Talk
Title: Hydride vapor phase epitaxy for 6-inch GaN-on-GaN wafer production
Presenter: Shota Kaneki (ICT & Mobility Solutions Research Laboratory, Sumitomo Chemical Co., Ltd.)
Date: Monday, January 19, 4:20 p.m. to 4:45 p.m. PST
Link to Abstract of the Presentation: Hydride vapor phase epitaxy for 6-inch GaN-on-GaN wafer production | SPIE Photonics West

Sumitomo Chemical Co., Ltd.
Advanced Inorganic Products Division
https://www.sumitomo-chem.co.jp/sciocs/english/