Bremen 2017 – scientific programme

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SYLM: Symposium Laser in der Medizin

SYLM 1: Laser in der Medizin I

SYLM 1.2: Invited Talk

Tuesday, March 14, 2017, 14:30–15:00, GW1 HS

Fourier Domain Mode Locking (FDML): A new laser for Optical Coherence tomography (OCT) and molecular microscopy — •Robert Huber — Institut für Biomedizinische Optik, Universität zu Lübeck, Peter-Monnik-Weg 4, 23562 Lübeck

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, many groups have spent great effort over the last ten years on developing appropriate laser sources. Some of the best performing OCT light sources are the recently developed 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.