Femtum
Series A
Femtum develops mid-infrared fiber laser solutions for semiconductor and photonics manufacturing.
Founded
2017Femtum develops mid-infrared fiber laser solutions for semiconductor and photonics manufacturing.
Femtum builds mid-infrared pulsed fiber lasers, amplifiers, and tunable sources operating roughly between 2.8 and 3.4 microns, alongside complete laser systems for semiconductor and photonics manufacturing. Its catalog includes the Femtum Nano 2800, UltraTune 3400, Amp 2800, and Ultra 2800.
These laser sources power two flagship industrial solutions: a wafer-level laser trimming platform that corrects fabrication drift in photonic integrated circuits, and a mid-infrared dry laser cleaning solution that selectively removes residues without damaging fragile substrates.
Femtum targets the fast-growing photonic integrated circuit and advanced semiconductor packaging market, driven by demand from artificial intelligence, data center interconnects, and silicon photonics. Industry analysts project the photonic integrated circuit market to expand sharply through the early 2030s.
As photonic circuits grow more complex, manufacturing yield and energy efficiency have become primary constraints. Femtum positions its laser cleaning and trimming solutions as enabling tools for high-volume photonics manufacturing, with early validation from tier-one semiconductor customers.
Femtum's core advantage is its proprietary access to the mid-infrared spectral region above 2800 nanometers, where few commercial fiber lasers operate. The 2.8 micron wavelength enables selective interaction with organic materials and precise material modification while preserving sensitive substrates.
Its laser trimming approach modifies the glass cladding around waveguides rather than the silicon core, achieving permanent, ultra-low-loss phase corrections. This lets fabs recover failing dies and reduce reliance on power-hungry thermal phase shifters, improving yield and energy efficiency.