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Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
Published on: November 22, 2019
Cr:Forsterite-laser-based fiber-optic nonlinear endoscope with higher efficiencies
Ming-Che Chan1, Shi-Wei Chu, Chien-Hung Tseng
1Department of Electrical Engineering and Graduate Institute of Electro-Optical Engineering, National Taiwan University, Taipei 10617, Taiwan, Republic of China.
Microscopy Research and Technique
|April 22, 2008
Summary
This study presents a novel beam-scanning nonlinear light endoscope using a flexible fiber bundle. It minimizes excitation efficiency loss without external devices, achieving 5.4 micrometer resolution in two-photon fluorescence imaging.
Area of Science:
- Biomedical Optics
- Endoscopy
- Nonlinear Microscopy
Background:
- Nonlinear light endoscopy offers advanced imaging capabilities.
- Pulse broadening in fiber optics degrades multiphoton excitation efficiency.
- Minimizing signal loss is crucial for high-resolution endoscopic imaging.
Purpose of the Study:
- To demonstrate a beam-scanning nonlinear light endoscope with a flexible fiber bundle.
- To reduce the degradation of multiphoton excitation efficiency caused by pulse broadening.
- To achieve high-resolution imaging in a compact endoscopic system.
Main Methods:
- Utilizing a flexible fiber bundle for beam scanning.
- Excitation with a femtosecond Cr:Forsterite laser.
- Characterizing system resolution using two-photon fluorescence.
Main Results:
- Significantly reduced degradation in multiphoton multiharmonic excitation efficiency.
- Achieved a system resolution of 5.4 micrometers in the two-photon fluorescence endoscope.
- Demonstrated image acquisition capabilities with the developed endoscope.
Conclusions:
- The developed beam-scanning nonlinear light endoscope effectively overcomes pulse-broadening limitations.
- The system provides high-resolution imaging without external pulse-management devices.
- This technology holds promise for advanced in-vivo endoscopic imaging applications.
