Manufacturing of fibre sensors
Similar to photonic integrated circuit direct writing, the refractive index of fused silica can be altered if the ultrashort pulse laser fluence is close to the damage threshold in focus. What actually changes in the material is the distribution of the number of atoms forming a ring.
Typical applications are light and temperature sensors, long period gratings written directly in the core of the optical fibre. For instance, Lumoscibe can do custom sensors for you and they use lasers from Fluence . With PulseBrick and CoreBrick the possibilities will open up for a much larger number of entrepreneurs.