TY - JOUR
T1 - Towards new applications using capillary waveguides
AU - Stasio, Nicolino
AU - Shibukawa, Atsushi
AU - Papadopoulos, Ioannis N.
AU - Farahi, Salma
AU - Simandoux, Olivier
AU - Huignard, Jean Pierre
AU - Bossy, Emmanuel
AU - Moser, Christophe
AU - Psaltis, Demetri
N1 - Publisher Copyright:
© 2015 Optical Society of America.
PY - 2015/11/2
Y1 - 2015/11/2
N2 - In this paper we demonstrate the enhancement of the sensing capabilities of glass capillaries. We exploit their properties as optical and acoustic waveguides to transform them potentially into high resolution minimally invasive endoscopic devices. We show two possible applications of silica capillary waveguides demonstrating fluorescence and optical-resolution photoacoustic imaging using a single 330 μm-thick silica capillary. A nanosecond pulsed laser is focused and scanned in front of a capillary by digital phase conjugation through the silica annular ring of the capillary, used as an optical waveguide. We demonstrate optical-resolution photoacoustic images of a 30 μm-thick nylon thread using the water-filled core of the same capillary as an acoustic waveguide, resulting in a fully passive endoscopic device. Moreover, fluorescence images of 1.5 μm beads are obtained collecting the fluorescence signal through the optical waveguide. This kind of silica-capillary waveguide together with wavefront shaping techniques such as digital phase conjugation, paves the way to minimally invasive multi-modal endoscopy.
AB - In this paper we demonstrate the enhancement of the sensing capabilities of glass capillaries. We exploit their properties as optical and acoustic waveguides to transform them potentially into high resolution minimally invasive endoscopic devices. We show two possible applications of silica capillary waveguides demonstrating fluorescence and optical-resolution photoacoustic imaging using a single 330 μm-thick silica capillary. A nanosecond pulsed laser is focused and scanned in front of a capillary by digital phase conjugation through the silica annular ring of the capillary, used as an optical waveguide. We demonstrate optical-resolution photoacoustic images of a 30 μm-thick nylon thread using the water-filled core of the same capillary as an acoustic waveguide, resulting in a fully passive endoscopic device. Moreover, fluorescence images of 1.5 μm beads are obtained collecting the fluorescence signal through the optical waveguide. This kind of silica-capillary waveguide together with wavefront shaping techniques such as digital phase conjugation, paves the way to minimally invasive multi-modal endoscopy.
KW - Digital holography
KW - Endoscopic imaging
KW - Fiber optics imaging
KW - Phase conjugation
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U2 - 10.1364/BOE.6.004619
DO - 10.1364/BOE.6.004619
M3 - Article
AN - SCOPUS:84961775035
VL - 6
SP - 4619
EP - 4631
JO - Biomedical Optics Express
JF - Biomedical Optics Express
SN - 2156-7085
IS - 12
M1 - 248264
ER -