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1. Different types of UV-visible lasers and related issues
Different types of amplifying media and different techniques can be used to obtain a laser source emitting radiation in the UV-visible range. However, with a few exceptions, as will become apparent in the remainder of this presentation, it is often more difficult, for technological as well as purely fundamental reasons, to operate a laser in the visible and especially in the UV range, rather than in the near- and mid-infrared domains.
At a fundamental level, the reason lies in the expression of the effective cross-section of stimulated emission, σ em , at the origin of the laser gain of any amplifying medium, written, for example, in the form (the so-called Fuchtbauer-Ladenburg expression) :
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Different types of UV-visible lasers and related issues
Direct-emitting solid-state laser systems in the UV-visible range
Bibliography
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Optics: organized every four years by the French Optics Society http://www.sfoptique.org
JNCO: training organized every two years by the CNRS CMDO+ network http://cmdo.cnrs.fr and the SFO's "Club des cristaux pour l'optique".
Directory
Companies marketing UV-visible laser sources and materials (non-exhaustive list)
Systems :
Coherent http://www.coherent.fr/
Continuum http://www.continuumlasers.com/
...
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