High-power, sub-100-fs, 1600-1700-nm all-fiber laser for deep multiphoton microscopy.
Opt Express
; 31(15): 24298-24306, 2023 Jul 17.
Article
em En
| MEDLINE
| ID: mdl-37475260
ABSTRACT
The 1600-1700-nm ultrafast fiber lasers attract great interests in the deep multiphoton microscopy, due to the reduced levels of the tissue scattering and absorption. Here, we report on the 86.7-MHz, 717-mW, 91.2-fs, all-fiber laser located in the spectral range from 1600â
nm to 1700nm. The soliton self-frequency shift (SSFS) was introduced into the ErYb co-doped fiber amplifier (EYDFA) to generate the high-power, 1600-1700-nm Raman soliton. Detailed investigations of the nonlinear fiber amplification process were implemented in optimizing the generated Raman soliton pulses. The miniature multiphoton microscopy was further realized with this home-built laser source. The clearly imaging results can be achieved by collecting the generated harmonic signals from the mouse tail skin tissue with a penetration depth of â¼500â
µm. The experimental results indicate the great potential in utilizing this 1600-1700-nm fiber laser in the deep multiphoton microscopy.
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MEDLINE
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En
Ano de publicação:
2023
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Article