Optical Sciences

Biomolecules and nanostructures

The Optical Sciences group studies the interaction of light and matter at the nanoscale. We do this by exploring ways to shape light and its environment. It's what we call active and passive control. Our current focus is on the interaction of light with biomolecules and nanostructures. We are part of Twente University's Department of Science and Technology and member of the MESA+ institute.
We participate in the EU-COST actions MP1102: Coherent Raman microscopy (MicroCor) and CM1202: Supramolecular photocatalytic water splitting (PERSPECT-H2O)


Laser Induced Damage Reduction in Single-Mode Fiber Devices

(full pdf)

F. Juárez López, F. Murtinez-Pinon, D. Jaramillo Vigueras, H. L. Offerhaus, and J. A. Alvarez Chavez
Laser Physics
Vol. 19 No. 5, p1030–1033 may 2009

We propose the use of tapered-up structures such as the fiber-horn lens and the straight-tip fiber-horn lens to be integrated in single-mode fiber devices to raise the damage threshold for input power. The optical damage limit with the use of such structures in single mode fibers is studied in this work. It is observed that for these devices to be practical, special attention needs to be put in the quality of the surface of the device and the quality of the fusion splice to standard single-mode fibers. New studies, techniques and fiber splicing equipment should help the new structures studied here, inwards their implementation in all-optical devices and high-power fiber lasers.
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