The invention of the laser has been a very important milestone in different perspectives: not only science and technology have made major progress due to the existence of lasers, also society has benefited from the development of these remarkable light sources. In spite of the worldwide research in the field of lasers over the past 40 years, there still remain quite a number of challenges in this research domain. For example, up to now only few or no efficient lasers have been developed with an emission wavelength in the mid-infrared spectral region from 2 to 5micro; a wavelength domain which is of great importance for various fields such as spectroscopy, medicine and material characterisation. Furthermore, the unwanted heat generation in the medium of a laser during lasing action limits the power scaling possibilities of these light sources and complicates the development of compact, user friendly lasers.
Our research in the framework of this project covers two different aspects of laser research. On one hand, we aim to develop, optimize and miniaturize an efficient, tunable, mid-infrared Chromium-doped Zinc Selenide (Cr:ZnSe) laser with an emission wavelength around 2.5micro. This source would then be implemented in a mid-infrared Mach-Zehnder transmission interferometer. On the other hand, we want to investigate how we can make use of Coherent Anti-Stokes Raman Scattering (CARS) to reduce the heat generation in Raman lasers - a very important category of lasers - in an intrinsic way. In other words, we aim to find out how we can dispose of the excess energy in the Raman laser medium in a radiative way using CARS.
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VUB - Campus Etterbeek
Building F - 9th floor