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  • 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference
  • OSA Technical Digest (Optica Publishing Group, 2019),
  • paper cj_1_4

Ultrafast Light Source at 1.8 µm Based on Thulium-Doped Fibers for Three-Photon Microscopy

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Abstract

Ultrafast laser systems operating around 1.7 µm to 1.8 µm are powerful tools to extend the penetration depth of mulitphoton microscopes [1, 2]. However, radiation at this wavelength region is not readily available and thus frequency shifting was necessary to obtain the desired wavelength. Here, we demonstrate an ultrafast thulium-doped fiber laser system generating the spectrum covering the 1.8 µm region, whose output pulses have sufficient intensity for three-photon excitation necessary for multiphoton microscopes.

© 2019 IEEE

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