期刊
APPLIED SCIENCES-BASEL
卷 11, 期 21, 页码 -出版社
MDPI
DOI: 10.3390/app11219871
关键词
DNA; ultrafast laser; mode-locking; saturable absorber; liquid phase
类别
资金
- Korea Institute of Science and Technology [2E31171]
This study demonstrates a passively mode-locked fiber laser using aqueous DNA solution as a saturable absorber, showing broadband pulse laser emission from 1 to 1.5 mu m. The laser is simple and cost effective to fabricate, exhibiting excellent long-term stability.
We demonstrate a passively mode-locked fiber laser using aqueous DNA solution as a saturable absorber (SA), with broadband pulse laser emission from 1 to 1.5 mu m. The mode-locked laser with erbium-doped fiber as the gain material has a center wavelength of 1563 nm, a 3 dB bandwidth of 3.9 nm, and a pulse width of 822 fs, whereas the laser with ytterbium-doped fiber as the gain material and an identical DNA aqueous SA has a center wavelength of 1037 nm, a 3 dB bandwidth of 5.04 nm, and a pulse width of 250 ps. The proposed laser, which is simple and cost effective to fabricate, exhibits excellent long-term stability as well as thermal stability during high-power operation. This mode-locked laser scheme with a liquid-phase DNA component has the potential to provide in-depth understanding of the optical nonlinearity and usefulness of DNA.
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