Tombelaine V.,Institute of Photonic Technologies Jena |
Bergner G.,Institute of Photonic Technologies Jena |
Vater E.,Institute of Photonic Technologies Jena |
Schlucker S.,University of Osnabrück |
And 6 more authors.
Optics Communications | Year: 2011
Supercontinuum fiber light sources with their extremely wide wavelength spectrum can provide new options for achieving specific wavelength distributions in a very flexible way. Two concepts for the combination of such supercontinuum light sources with a spectrally dispersive optical system and an interactive filter for modulating the light spectrum are discussed. These concepts provide the possibility to achieve laser-like light sources with an almost arbitrary shape of the spectrum, great flexibility in interactive tuning of the spectral properties and covering wavelengths from UV to the infrared range. © 2010 Elsevier B.V. All rights reserved.
Elsmann T.,Institute of Photonic Technologies Jena |
Hartung A.,Institute of Photonic Technologies Jena |
Rothhardt M.,Institute of Photonic Technologies Jena |
Bartelt H.,Institute of Photonic Technologies Jena |
And 3 more authors.
Optik | Year: 2013
Volume Bragg gratings were inscribed in the non-photosensitive glass material S-TIH53 from OHARA using a fs laser system and a Talbot interferometer. We demonstrate the basic applicability of our technique for generating index modulations inside the volume of such user-adapted glass. The volume Bragg gratings are investigated by measuring the external Bragg reflection using a HeNe laser (632.8 nm). Thus the local reflectivity profile is mapped and the modulation of the refractive index can be estimated. Other kinds of gratings, such as surface or amplitude gratings were ruled out by investigations with an optical microscope, heating experiments and absorption measurements. © 2013 Elsevier GmbH.