Optical Sciences

Biomolecules and nanostructures

The Optical Sciences group studies the interaction of light and matter. Our current focus is on detection and sensing/imaging with an emphasis on the development of integrated photonics. We are part of Twente University's Department of Science and Technology and member of the MESA+ institute.


Wide wavelength-tuning of a double-clad Yb3+-doped fiber laser based on a fiber Bragg grating array

(full pdf)

J.A. Alvarez-Chavez, A. Martínez-Rios, I. Torres-Gomez, H.L. Offerhaus
Laser Physics Letters
vol 4 july 6 2007

We report wide wavelength tuning in a double-clad ytterbium-doped fiber laser. The laser cavity consists of an array of broadband high-reflection fiber Bragg gratings and a bulk grating as output coupler and wavelength selection element. The proposed fiber laser configuration combines low intra-cavity loss of fiber Bragg grating mirrors with wide wavelength tuning of bulk gratings.We demonstrate >70 nm wavelength tuning range, limited only by the available fiber Bragg gratings.
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