Computational Fluorescence Imaging with Multi-Core Fiber Bundles – Towards High-Speed Imaging Through Bare Optical Fibers
- Resource Type
- Conference
- Authors
- Sivankutty, Siddharth; Guerit, Stephanie; Leblanc, Olivier; Hofer, Matthias; Bouwmans, Geraud; Andresen, Esben Ravn; Jacques, Laurent; Rigneault, Herve
- Source
- 2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), 2023 Conference on. :1-1 Jun, 2023
- Subject
- Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Engineering Profession
Fields, Waves and Electromagnetics
Photonics and Electrooptics
Optical fibers
Scanning electron microscopy
Optical microscopy
Quantum computing
Endoscopes
Microscopy
Modulation
- Language
- ISSN
- 2833-1052
Wavefront control of the coherent lasers has opened a new class of imaging techniques through optical fibers called lensless endoscopes. A spatial light modulator (SLM) at the entrance of an optical fiber modifies the wavefront of a laser beam to undo the scrambling of the initial beams by the fiber and this enables the transport of either illumination patterns or images through the fiber [1]. In the most common implementation, the SLM allows for the generation and the scanning of a single high-intensity focus at the distal end of the fiber with no additional optical elements, analogous to a confocal scanning microscope. This allows for the acquisition of images at a rate only limited by the update rate of the SLM (ranging from a few Hz to $\sim \text{kHz}$). This is relatively slow compared to a confocal microscope where pixel dwell times in the $\mu \mathrm{s}$ regime are routinely obtained. Hence, it remains a significant challenge to speedup the image acquisition rates with lensless endoscopes.