MKS Launches New Solstice® APX Ultrafast Amplifiers with Enhanced Performance and Reliability

Andover, Mass., January 20, 2026 -- MKS Inc. (NASDAQ: MKSI), a global provider of enabling technologies that transform our world, today announced the launch of the Spectra-Physics® Solstice APX amplifiers. Engineered to rigorous industrial standards, this next-generation one-box ultrafast amplifier exhibits exceptional beam pointing stability, excellent pulse-to-pulse stability and enhanced long-term stability and beam quality. With its outstanding performance and reliability, Solstice APX amplifiers are ideal for demanding applications in research, metrology and other fields.

“The new Solstice APX takes the proven capability of our ultrafast amplifiers to an unprecedented level of performance and reliability for advanced scientific research,” said Scott White, Senior Director of Product Marketing for Spectra-Physics lasers. “The advances found in the Solstice APX reinforce how the engineering rigor of our industrial products directly benefits our broader product offerings.”

Solstice APX systems build upon the field proven design of Spectra-Physics ultrafast amplifiers to provide industry-leading specifications in beam quality and stability. Engineered to withstand lab environments with temperature swings up to 10°C, Solstice APX has undergone extensive component and system-level qualification testing to ensure this exceptional stability and reliability.

The new Spectra-Physics Solstice APX will be featured at Photonics West 2026, held in San Francisco, CA, from January 20-22, 2026. Visit MKS at booth 927 in South Hall for a demonstration and find out more or visit www.spectra-physics.com/f/solstice-apx-laser

Spectra-Physics® and Solstice® are registered trademarks of MKS Inc.

Spectra-Physics Contact:
Scott White
Sr. Director of Product Marketing
Tel.: +1 408-980-4397
Email: scott.white@mks.com

Helen Chan
Marketing Communications Manager
Tel.: +1 408-980-5883
Email: helen.chan@mks.com

About MKS Inc.
MKS Inc. enables technologies that transform our world. We deliver foundational technology solutions to leading edge semiconductor manufacturing, electronics and packaging, and specialty industrial applications. We apply our broad science and engineering capabilities to create instruments, subsystems, systems, process control solutions and specialty chemicals technology that improve process performance, optimize productivity and enable unique innovations for many of the world’s leading technology and industrial companies. Our solutions are critical to addressing the challenges of miniaturization and complexity in advanced device manufacturing by enabling increased power, speed, feature enhancement, and optimized connectivity. Our solutions are also critical to addressing ever-increasing performance requirements across a wide array of specialty industrial applications. Additional information can be found at www.mks.com.

About Spectra-Physics
Spectra-Physics is a brand within the MKS Photonics Solutions division. The Spectra-Physics product portfolio consists of a broad spectrum of lasers for precision industrial and scientific research applications. Spectra-Physics products combine groundbreaking laser technologies with deep applications expertise to deliver disruptive performance and lower total cost of ownership. From the manufacturing floor and semiconductor fab to the research laboratory, Spectra-Physics lasers enhance our customers’ capabilities and productivity in the semiconductor, electronics and packaging, and specialty industrial markets. For more information, visit www.spectra-physics.com.