Femtosecond fiber laser at 780 nm for two-photon autofluorescence imaging

Wan Yang; Danlei Wu; Runlong Wu; Guanyu Liu; Bingying Chen; Lishuang Feng; Zhigang Zhang; Aimin Wang

doi:10.3788/COL201917.071405

Journals >Chinese Optics Letters >Volume 17 >Issue 7 >Page 071405 > Article

Chinese Optics Letters
Vol. 17, Issue 7, 071405 (2019)

Femtosecond fiber laser at 780 nm for two-photon autofluorescence imaging

Wan Yang¹, Danlei Wu^1,2, Runlong Wu¹, Guanyu Liu¹..., Bingying Chen¹, Lishuang Feng², Zhigang Zhang¹ and Aimin Wang^1,*|Show fewer author(s)

Author Affiliations

¹State Key Laboratory of Advanced Optical Communication System and Networks, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China

²Key Laboratory of Precision Opto-Mechatronics Technology, Ministry of Education, School of Instrumentation Science & Optoelectronics Engineering, Beihang University, Beijing 100191, China

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DOI: 10.3788/COL201917.071405 Cite this Article Set citation alerts

Wan Yang, Danlei Wu, Runlong Wu, Guanyu Liu, Bingying Chen, Lishuang Feng, Zhigang Zhang, Aimin Wang, "Femtosecond fiber laser at 780 nm for two-photon autofluorescence imaging," Chin. Opt. Lett. 17, 071405 (2019) Copy Citation Text

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Abstract

We present an Er-doped fiber (Er:fiber)-based femtosecond laser at 780 nm with 256 MHz repetition rate, 191 fs pulse duration, and over 1 W average power. Apart from the careful third-order dispersion management, we introduce moderate self-phase modulation to broaden the output spectrum of the Er:fiber amplifier and achieve 193 fs pulse duration and 2.43 W average power. Over 40% frequency doubling efficiency is obtained by a periodically poled lithium niobate crystal. Delivering through a hollow-core photonic bandgap fiber, this robust laser becomes an ideal and convenient light source for two-photon autofluorescence imaging.