Université de Neuchâtel

Replicated arrays of hybrid elements for application in a low-cost micro-spectrometer array

Traut, S. ; Herzig, Hans-Peter ; Rossi, Markus

In: Journal of Modern Optics, 2000, vol. 47, no. 13, p. 2391-2397

We report on the fabrication and characterization of replicated hybrid elements for low-cost micro-spectrometer array applications. An array of hybrid elements, where one surface combines the fairly large dimensions of refractive microlenses with the submicron features of a diffraction grating, was successfully replicated by hot embossing. The parameters are: lens diameter=990 μm, height=60 μm,...

Université de Neuchâtel

Holographically recorded gratings on microlenses for a miniaturized spectrometer array

Traut, S. ; Herzig, Hans-Peter

In: Optical Engineering, 2000, vol. 39, no. 1, p. 290-298

We report on the investigation of refractive microlens arrays with diffractive grating surfaces in the context of a microspectrometer array system. The elements fabricated combine the fairly large dimensions of the refractive microlens (990-µm diam, 60-µm height) with the submicron features of the diffraction grating (1-µm grating period) on one transmitting surface. The fabrication process of...

Université de Neuchâtel

Miniaturized, focusing fan-out elements: design, fabrication and characterization

Schilling, Andreas ; Nussbaum, Philippe ; Ossmann, Ch. ; Traut, S. ; Rossi, Markus ; Schift, H. ; Herzig, Hans-Peter

In: Journal of Optics A: Pure and Applied Optics, 1999, vol. 1, no. 2, p. 244-248

We present miniaturized, focusing fan-out elements. The new micro-optical elements were fabricated using different technologies: double-sided injection moulding in polycarbonate, double-sided photolithography with subsequent transfer in quartz and direct laser writing in photoresist. The fan-out elements were characterized by measuring their efficiency and uniformity, the surface profiles of the...