Journal
NANOMATERIALS
Volume 11, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/nano11102561
Keywords
fiber laser; mode locking; PbS quantum dots
Categories
Funding
- National Natural Science Foundation of China [61905118]
- Nanjing University of Posts and Telecommunications [NY218023]
- Research Center of Optical Communications Engineering & Technology, Jiangsu Province [ZXF201905]
Ask authors/readers for more resources
In this study, fiber-based PbS quantum dots as a saturable absorber were studied for the generation of dual-wavelength ultrafast pulses for the first time. By introducing PbS quantum dots saturable absorber into an erbium-doped fiber laser, the laser was able to simultaneously generate dual-wavelength conventional solitons with central wavelengths of 1532 and 1559 nm and 3 dB bandwidths of 2.8 and 2.5 nm, respectively. The results demonstrate the potential application prospects of PbS quantum dots as broadband saturable absorbers for ultrafast laser generation.
PbS quantum dots (QDs), a representative zero-dimensional material, have attracted great interest due to their unique optical, electronic, and chemical characteristics. Compared to one- and two-dimensional materials, PbS QDs possess strong absorption and an adjustable bandgap, which are particularly fascinating in near-infrared applications. Here, fiber-based PbS QDs as a saturable absorber (SA) are studied for dual-wavelength ultrafast pulses generation for the first time to our knowledge. By introducing PbS QDs SA into an erbium-doped fiber laser, the laser can simultaneously generate dual-wavelength conventional solitons with central wavelengths of 1532 and 1559 nm and 3 dB bandwidths of 2.8 and 2.5 nm, respectively. The results show that PbS QDs as broadband SAs have potential application prospects for the generation of ultrafast lasers.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available