Chinese Optics Letters, 2019, 17 (7): 071405, Published Online: Jul. 9, 2019
Femtosecond fiber laser at 780 nm for two-photon autofluorescence imaging Download: 550次
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.
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[J]. Chinese Optics Letters, 2019, 17(7): 071405.