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Femtosecond-laser induced compositional changes for photonics applications

AutorSolís Céspedes, Javier
Fecha de publicación19-jun-2017
CitaciónInternational School on Light Sciences and Technologies (2017)
ResumenIn 1996, two seminal papers from the groups of K. Hirao and E. Mazur independently demonstrated the feasibility of using femtosecond (fs) lasers for modifying the optical properties of a small volume inside the bulk of a transparent material. The magnitude of the refractive index change achievable is typically though below 10-2 (associated to density or polarizability changes, defects, photochemical effects, damage…). In spite of this, fs-laser structuring has been used for producing a wide variety of photonic (and also micro-fluidic) devices ranging from simple passive waveguides to waveguide-integrated lasers or photonic lanterns. During the first part of the talk I will describe the fundamentals of this direct writing technique, its main advantages and limitations, as well as a number of relevant application examples. In the second part I will describe the use of controlled, local compositional changes produced by fs-laser processing to generate high contrast, refractive structures for photonics applications.
DescripciónCore: Light in Energy and Environment, Santander, Spain, June 19-23, 2017
Aparece en las colecciones: (CFMAC-IO) Comunicaciones congresos
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