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MXene Core-Shell Nanosheets: Facile Synthesis, Optical Properties, and Versatile Photonics Applications
Yunjia Wang1, Shunxiang Liu1, Feng Zhu1
1Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
Nanomaterials (Basel, Switzerland)
|August 27, 2021
Summary
Titanium carbide MXene core-shell nanosheets with gold nanoparticles enhance fiber laser performance. These novel saturable absorbers enable mode-locked lasers with 670 fs pulses and narrow-linewidth single-frequency lasers.
Area of Science:
- Materials Science
- Photonics
- Nanotechnology
Background:
- Transition metal carbonitrides (MXenes) show promise in optoelectronics.
- MXene complex structures improve device performance.
- Gold nanoparticles are frequently used in photonic applications.
Purpose of the Study:
- To develop and investigate MXene core-shell nanosheets for advanced laser applications.
- To enhance the performance of mode-locked and single-frequency fiber lasers.
- To explore the potential of these nanostructures as saturable absorbers.
Main Methods:
- Fabrication of Ti2C MXene core-shell nanosheets decorated with gold nanoparticles.
- Integration of the synthesized nanostructures into fiber laser cavities.
- Characterization of laser performance, including pulse duration, threshold pump power, and linewidth.
Main Results:
- Demonstration of improved performance in both mode-locked and single-frequency fiber lasers.
- Achieved mode-locking operation with 670 fs pulses.
- Obtained a single-frequency laser with a linewidth as narrow as ~1 kHz.
- Low threshold pump power of 20 mW for mode-locking.
Conclusions:
- MXene core-shell nanosheets act as effective saturable absorbers.
- These nanostructures significantly boost the performance of fiber laser systems.
- The developed material holds potential for versatile photonic applications.
