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All-fiber femtosecond laser providing 9 nJ, 50 MHz pulses at 1650 nm for three-photon microscopy

Abstract : The spectral window lying between 1.6 and 1.7 mu m is interesting for in-depth multiphoton microscopy of intact tissues due to reduced scattering and absorption in this wavelength range. However, wide adoption of this excitation range will rely on the availability of robust and cost-effective high peak power pulsed lasers operating at these wavelengths. In this communication, we report on a monolithically integrated high repetition rate (50 MHz) all-fiber femtosecond laser based on a soliton self-frequency shift providing 9 nJ, 75 fs pulses at 1650 nm. We illustrate its potential for biological microscopy by recording three-photon-excited fluorescence and third-harmonic generation images of mouse nervous tissue and developing Drosophila embryos labeled with a red fluorescent protein.
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https://hal.archives-ouvertes.fr/hal-01611185
Contributor : Alexandre Poux <>
Submitted on : Thursday, October 5, 2017 - 3:35:18 PM
Last modification on : Wednesday, November 25, 2020 - 11:12:05 AM

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Patrick Cadroas, L. Abdeladim, Leonid Kotov, Mikhail Likhachev, D. Lipatov, et al.. All-fiber femtosecond laser providing 9 nJ, 50 MHz pulses at 1650 nm for three-photon microscopy. Journal of Optics, Institute of Physics (IOP), 2017, 19 (6), pp.065506. ⟨10.1088/2040-8986/aa6f72⟩. ⟨hal-01611185⟩

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