Femtosecond-pulse fiber delivery with power stabilization to increase flexibility for multiphoton tomography and two-photon microscopy

Hans Georg Breunig; Puxin Yang; Karsten König

doi:10.1117/12.2607255

3 March 2022 Femtosecond-pulse fiber delivery with power stabilization to increase flexibility for multiphoton tomography and two-photon microscopy

Hans Georg Breunig, Puxin Yang, Karsten König

Author Affiliations +

Proceedings Volume 11965, Multiphoton Microscopy in the Biomedical Sciences XXII; 1196506 (2022) https://doi.org/10.1117/12.2607255
Event: SPIE BiOS, 2022, San Francisco, California, United States

Abstract

Optical-fiber delivery increases the flexibility of experimental setups. Fiber delivery of fs pulses, however, is impractical with conventional optical fibers due their low-intensity damage threshold and nonlinearities which distort the temporal and spectral pulse shapes. Recently developed kagome hollow-core photonics crystal fibers can transmit ultra-short highpeak power pulses without disturbing pulse characteristics even in a broad wavelength range. The application outside of controlled laboratory settings, nevertheless, remains impeded by the sensitivity of the power transmission to movement and bending. In order to overcome this limitation, we have developed a continuous feedback-loop to stabilize the fiber output power by a fast online-control of the input power such that motion-caused transmission changes of the fiber are rapidly and continuously compensated. This is illustrated with a table-top setup. Furthermore, in order to demonstrate the improved flexibility, which is in particular beneficial for applications that require frequent positioning changes, the powerstabilized ultrashort pulse-fiber delivery is employed in a multiphoton tomograph.

Conference Presentation

Citation Download Citation

Hans Georg Breunig, Puxin Yang, and Karsten König "Femtosecond-pulse fiber delivery with power stabilization to increase flexibility for multiphoton tomography and two-photon microscopy", Proc. SPIE 11965, Multiphoton Microscopy in the Biomedical Sciences XXII, 1196506 (3 March 2022); https://doi.org/10.1117/12.2607255

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