Radians Innova Ab

Rofin-Sinar Laser Gmbh

Permanova Lasersystem Ab

Kennet J Vilhelmsson

Tomas Lock

Sven-Olov Roos

Ulf Sandstrom

Sverker Hangrd Segerstad

Johan Michael Larsson

Olle B Nilsson

The invention relates to a device and method for tuning the wavelength of the light in an external cavity laser. The external cavity laser comprises an optically amplifying semiconductor chip, a first reflecting surface, an Anti-Reflection (AR) coated semiconductor chip facet, a diffraction grating on which at least part of the beam originating from the AR coated semiconductor chip facet is incident and diffracted back to the optically amplifying semiconductor chip, means for collimating the light emitted from the AR coated semiconductor chip facet towards the diffraction grating, and a movable part. By the movement of the moveable part, the wavelength of the light can be turned in the external cavity laser. The movable part of the external cavity laser exhibits a rotational movement relative to the optical axis of the external movement being actuated by an electrodynamic force generated within an integral section of the moveable part.

Device and method for tuning the wavelength of the light in an external cavity laser

Arrangement relating to beam emission

An optical fiber cable for high power laser radiation transmission comprises a fiber having a core and a surrounding cladding, a rod provided at at least one of contact ends of the core and fused to an end surface of the core the rod having larger diameter than that of the core, and a reflector provided at this end of the fiber, the rod being designed to conduct rays entering outside the fiber towards an area where they can be absorbed without causing any damage, to conduct rays not linked into the fiber towards the reflector.

Fibre

Cantilever system for holding and positioning components

Method for ascertaining mode hopping free tuning of resonance frequency

Growing community of inventors

Partille, Sweden

Kennet J Vilhelmsson