@article {3807, title = {Controlling light propagation in multimode fibers for imaging, spectroscopy, and beyond}, journal = {Adv. Opt. Photon.}, volume = {15}, year = {2023}, month = {Jun}, pages = {524{\textendash}612}, doi = {10.1364/AOP.484298}, url = {https://opg.optica.org/aop/abstract.cfm?URI=aop-15-2-524} } @article {3600, title = {Hybrid multimode - multicore fibre based holographic endoscope for deep-tissue neurophotonics}, journal = {Light: Advanced Manufacturing}, volume = {3}, year = {2022}, pages = {1}, issn = {2689-9620}, doi = {10.37188/lam.2022.029}, url = {https://www.light-am.com//article/id/5e7e4e57-462a-4c48-92ca-1aec395fed59} } @article {3564, title = {Near perfect focusing through multimode fibres}, journal = {Opt. Express}, volume = {30}, year = {2022}, month = {Mar}, pages = {10645{\textendash}10663}, doi = {10.1364/OE.452145}, url = {http://opg.optica.org/oe/abstract.cfm?URI=oe-30-7-10645} } @article {3565, title = {Neurophotonic tools for microscopic measurements and manipulation: status report}, journal = {Neurophotonics}, volume = {9}, year = {2022}, doi = {10.1117/1.NPh.9.S1.013001}, url = {https://doi.org/10.1117/1.NPh.9.S1.013001} } @article {3627, title = {Roadmap on wavefront shaping and deep imaging in complex media}, journal = {Journal of Physics: Photonics}, volume = {4}, year = {2022}, month = {aug}, pages = {042501}, abstract = {

The last decade has seen the development of a wide set of tools, such as wavefront shaping, computational or fundamental methods, that allow us to understand and control light propagation in a complex medium, such as biological tissues or multimode fibers. A vibrant and diverse community is now working in this field, which has revolutionized the prospect of diffraction-limited imaging at depth in tissues. This roadmap highlights several key aspects of this fast developing field, and some of the challenges and opportunities ahead.

}, doi = {10.1088/2515-7647/ac76f9}, url = {https://dx.doi.org/10.1088/2515-7647/ac76f9} } @article {3435, title = {All-optical manipulation of photonic membranes}, journal = {Opt. Express}, volume = {29}, year = {2021}, month = {May}, pages = {14260{\textendash}14268}, abstract = {

We demonstrate the all-optical manipulation of polymeric membranes in microfluidic environments. The membranes are decorated with handles for their use in holographic optical tweezers systems. Our results show that due to their form factor the membranes present a substantial increase in their mechanical stability, respect to micrometric dielectric particles. This intrinsic superior stability is expected to improve profoundly a wide range of bio-photonic applications that rely on the optical manipulation of micrometric objects.

}, doi = {10.1364/OE.420364}, url = {http://www.opticsexpress.org/abstract.cfm?URI=oe-29-10-14260} } @article {3479, title = {Computational image enhancement of multimode fibre-based holographic endo-microscopy: harnessing the muddy modes}, journal = {Opt. Express}, volume = {29}, year = {2021}, month = {Nov}, pages = {38206{\textendash}38220}, doi = {10.1364/OE.434848}, url = {http://www.osapublishing.org/oe/abstract.cfm?URI=oe-29-23-38206} } @article {3471, title = {Side-view holographic endomicroscopy via a custom-terminated multimode fibre}, journal = {Opt. Express}, volume = {29}, year = {2021}, pages = {23083{\textendash}23095}, abstract = {

Microendoscopes based on optical fibres have recently come to the fore as promising candidates allowing in-vivo observations of otherwise inaccessible biological structures in animal models. Despite being still in its infancy, imaging can now be performed at the tip of a single multimode fibre, by relying on powerful holographic methods for light control. Fibre based endoscopy is commonly performed en face, resulting in possible damage of the specimen owing to the direct contact between the distal end of the probe and target. On this ground, we designed an all-fibre probe with an engineered termination that reduces compression and damage to the tissue under investigation upon probe insertion. The geometry of the termination brings the field of view to a plane parallel to the fibre\&\#x2019;s longitudinal direction, conveying the probe with off-axis imaging capabilities. We show that its focusing ability also benefits from a higher numerical aperture, resulting in imaging with increased spatial resolution. The effect of probe insertion was investigated inside a tissue phantom comprising fluorescent particles suspended in agarose gel, and a comparison was established between the novel side-view probe and the standard en face fibre probe. This new concept paves the way to significantly less invasive deep-tissue imaging.

}, doi = {10.1364/OE.426235}, url = {http://www.osapublishing.org/oe/abstract.cfm?URI=oe-29-15-23083} } @article {3497, title = {Thermal stability of wavefront shaping using a DMD as a spatial light modulator}, journal = {Opt. Express}, volume = {29}, year = {2021}, month = {Dec}, pages = {41808{\textendash}41818}, doi = {10.1364/OE.442284}, url = {http://www.osapublishing.org/oe/abstract.cfm?URI=oe-29-25-41808} } @article {3469, title = {Time-averaged image projection through a multimode fiber}, journal = {Opt. Express}, volume = {29}, year = {2021}, pages = {28005{\textendash}28020}, abstract = {

Many disciplines, ranging from lithography to opto-genetics, require high-fidelity image projection. However, not all optical systems can display all types of images with equal ease. Therefore, the image projection quality is dependent on the type of image. In some circumstances, this can lead to a catastrophic loss of intensity or image quality. For complex optical systems, it may not be known in advance which types of images pose a problem. Here we show a new method called Time-Averaged image Projection (TAP), allowing us to mitigate these limitations by taking the entire image projection system into account despite its complexity and building the desired intensity distribution up from multiple illumination patterns. Using a complex optical setup, consisting of a wavefront shaper and a multimode optical fiber illuminated by coherent light, we succeeded to suppress any speckle-related background. Further, we can display independent images at multiple distances simultaneously, and alter the effective sharpness depth through the algorithm. Our results demonstrate that TAP can significantly enhance the image projection quality in multiple ways. We anticipate that our results will greatly complement any application in which the response to light irradiation is relatively slow (one microsecond with current technology) and where high-fidelity spatial distribution of optical power is required.

}, doi = {10.1364/OE.431842}, url = {http://www.osapublishing.org/oe/abstract.cfm?URI=oe-29-18-28005} } @article {3498, title = {Time-of-flight 3D imaging through multimode optical fibers}, journal = {Science}, volume = {374}, year = {2021}, pages = {1395-1399}, doi = {10.1126/science.abl3771 URL = https://www.science.org/doi/abs/10.1126/science.abl3771} } @article {3191, title = {Label-free CARS microscopy through a multimode fiber endoscope}, journal = {Opt. Express}, volume = {27}, year = {2019}, pages = {30055{\textendash}30066}, abstract = {

Multimode fibres have recently been employed as high-resolution ultra-thin endoscopes, capable of imaging biological structures deep inside tissue in vivo. Here, we extend this technique to label-free non-linear microscopy with chemical contrast using coherent anti-Stokes Raman scattering (CARS) through a multimode fibre endoscope, which opens up new avenues for instant and in-situ diagnosis of potentially malignant tissue. We use a commercial 125 \&\#x00B5;m diameter, 0.29 NA GRIN fibre, and wavefront shaping on an SLM is used to create foci that are scanned behind the fibre facet across the sample. The chemical selectivity is demonstrated by imaging 2 \&\#x00B5;m polystyrene and 2.5 \&\#x00B5;m PMMA beads with per pixel integration time as low as 1 ms for epi-detection.

}, doi = {10.1364/OE.27.030055}, url = {http://www.opticsexpress.org/abstract.cfm?URI=oe-27-21-30055} } @article {3232, title = {Nanobore fiber focus trap with enhanced tuning capabilities}, journal = {Opt. Express}, volume = {27}, year = {2019}, month = {Dec}, pages = {36221{\textendash}36230}, doi = {10.1364/OE.27.036221}, url = {http://www.opticsexpress.org/abstract.cfm?URI=oe-27-25-36221} } @article {3190, title = {Wavelength dependent characterization of a multimode fibre endoscope}, journal = {Opt. Express}, volume = {27}, year = {2019}, pages = {28239{\textendash}28253}, abstract = {

Multimode fibres have recently shown promise as miniature endoscopic probes. When used for non-linear microscopy, the bandwidth of the imaging system limits the ability to focus light from broadband pulsed lasers as well as the possibility of wavelength tuning during the imaging. We demonstrate that the bandwidth is limited by the dispersion of the off-axis hologram displayed on the SLM, which can be corrected for, and by the limited bandwidth of the fibre itself. The selection of the fibre is therefore crucial for these experiments. In addition, we show that a standard prism pulse compressor is sufficient for material dispersion compensation for multi-photon imaging with a fibre endoscope.

}, doi = {10.1364/OE.27.028239}, url = {http://www.opticsexpress.org/abstract.cfm?URI=oe-27-20-28239} } @article {TurtaevLSA18, title = {High-fidelity multimode fibre-based endoscopy for deep brain in vivo imaging}, journal = {Light: Sci. Appl.}, volume = {7}, year = {2018}, pages = {92}, doi = {10.1038/s41377-018-0094-x} } @article {FlaesPRL18, title = {Robustness of Light-Transport Processes to Bending Deformations in Graded-Index Multimode Waveguides}, journal = {Phys. Rev. Lett.}, volume = {120}, year = {2018}, pages = {233901:1-5}, doi = {10.1103/PhysRevLett.120.233901} } @article {Vasquez-LopezLSA18, title = {Subcellular spatial resolution achieved for deep-brain imaging in vivo using a minimally invasive multimode fiber}, journal = {Light: Sci. Appl.}, volume = {7}, year = {2018}, pages = {110}, doi = {10.1038/s41377-018-0111-0} } @article { LeiteNP18, title = {Three-dimensional holographic optical manipulation through a high-numerical-aperture soft-glass multimode fibre}, journal = {Nature Photon.}, volume = {12}, year = {2018}, pages = {33{\textendash}39}, doi = {10.1038/s41566-017-0053-8} } @article { BrzobohatyNP13, title = {Experimental demonstration of optical transport, sorting and self-arrangement using a {\textquoteleft}tractor beam{\textquoteright}}, journal = {Nature Photon.}, volume = {7}, number = {2}, year = {2013}, pages = {123-127}, doi = {10.1038/nphoton.2012.332} } @article { SilerAPL12, title = {Speed enhancement of multi-particle chain in a traveling standing wave}, journal = {Appl. Phys. Lett.}, volume = {100}, year = {2012}, pages = {051103}, doi = {10.1063/1.3680234} } @article { BrzobohatyAPL11, title = {Dynamic size tuning of multidimensional optically bound matter}, journal = {Appl. Phys. Lett.}, volume = {99}, year = {2011}, pages = {101105}, doi = {10.1063/1.3634007} } @article { CizmarLPL11, title = {The holographic optical micro-manipulation system based on counter-propagating beams}, journal = {Laser Phys. Lett.}, volume = {8}, year = {2011}, pages = {50{\textendash}56}, doi = {10.1002/lapl.201010100} } @article { BrzobohatyOE10, title = {Experimental and theoretical determination of optical binding forces}, journal = {Opt. Express}, volume = {18}, number = {24}, year = {2010}, pages = {25389{\textendash}25402}, issn = {1094-4087}, doi = {10.1364/OE.18.025389} } @article { BrzobohatyOE08, title = {High quality quasi-Bessel beam generated by round-tip axicon}, journal = {Opt. Express}, volume = {16}, year = {2008}, pages = {12688{\textendash}12700}, doi = {10.1364/OE.16.012688} } @article { KarasekPRL08, title = {Long-range one-dimensional longitudinal optical binding}, journal = {Phys. Rev. Lett.}, volume = {101}, number = {14}, year = {2008}, pages = {143601}, issn = {0031-9007}, doi = {10.1103/PhysRevLett.101.143601} } @article { JaklAPL08, title = {Static optical sorting in a laser interference field}, journal = {Appl. Phys. Lett.}, volume = {92}, number = {16}, year = {2008}, pages = {161110:1{\textendash}3}, issn = {0003-6951}, doi = {10.1063/1.2913759} } @article { SilerNJP08, title = {Surface delivery of a single nanoparticle under moving evanescent standing-wave illumination}, journal = {New. J. Phys.}, volume = {10}, year = {2008}, pages = {113010}, issn = {1367-2630}, doi = {10.1088/1367-2630/10/11/113010} } @article { DholakiaMCB07, title = {Cellular and colloidal separation using optical forces}, journal = {Methods in Cell Biology}, volume = {82}, year = {2007}, pages = {467{\textendash}495}, doi = {10.1016/S0091-679X(06)82017-0} } @article { CizmarOE07, title = {Optical tracking of spherical micro-objects in spatially periodic interference fields}, journal = {Opt. Express}, volume = {15}, year = {2007}, pages = {2262{\textendash}2272}, doi = {10.1364/OE.15.002262} } @article {JezekOE06, title = {Formation of long and thin polymer fiber using nondiffracting beam}, journal = {Opt. Express}, volume = {14}, year = {2006}, pages = {8506-8515}, doi = {10.1364/OE.14.008506} } @article {SilerAPB06, title = {Optical forces generated by evanescent standing waves and their usage for sub-micron particle delivery}, journal = {Appl. Phys. B}, volume = {84}, year = {2006}, pages = {157{\textendash}165}, doi = {10.1007/s00340-006-2235-9} } @article {CizmarAPB06, title = {An optical nanotrap array movable over a milimetre range}, journal = {Appl. Phys. B}, volume = {84}, year = {2006}, pages = {197{\textendash}203}, doi = {10.1007/s00340-006-2221-2} } @article {CizmarPRB06, title = {Optical sorting and detection of sub-micron objects in a motional standing wave}, journal = {Phys. Rev. B}, volume = {74}, year = {2006}, pages = {035105:1-6}, doi = {10.1103/PhysRevB.74.035105} } @article {CizmarNJP06, title = {Sub-micron particle organization by self-imaging of non-diffracting beams}, journal = {New. J. Phys.}, volume = {8}, year = {2006}, pages = {43}, doi = {10.1088/1367-2630/8/3/043} } @article {CizmarAPL05, title = {Optical conveyor belt for delivery of submicron objects}, journal = {Appl. Phys. Lett.}, volume = {86}, year = {2005}, pages = {174101-1{\textendash}174101-3}, doi = {10.1063/1.1915543} }