Kolloquiumsvortrag, Prof. Dr. Robert Huber, Inst. für Biomedizinische Optik, Uni Lübeck / am 16.01.2017

16.01.2017 von 17:15 bis 18:45

Technische Fakultät, Insitut für ET/IT, Kaiserstr. 2, Kiel, Raum: "Aquarium", Geb. D

Titel: Fourier Domain Modenkopplung

Abstract: Optical coherence tomography (OCT) is one of the biggest and fastest growing fields in optics. This new optical imaging modality is mainly used in biomedical applications, where it can provide depth resolved three-dimensional tissue contrast with micron scale resolution. One implementation of OCT requires rapidly wavelength swept, narrowband cw-laser light sources. Since the performance requirements of such OCT lasers substantially differ from classical tunable lasers, over the last ten years many groups have spent great effort on developing appropriate laser sources. Some of the best performing OCT light sources are the recently invented Fourier Domain mode locked (FDML) lasers, which enabled OCT depth scan rates well into the Multi-Megahertz range (MHz-OCT) for the first time. The talk will discuss the FDML mechanism, the related physics behind it, the involved laser technology, and various OCT imaging examples. Finally, recent results on using a FDML in combination with a new class of nanosecond fiber lasers for stimulated Raman sensing and two-photon imaging will be presented.

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