Abstract
Broadband pulsed laser generation is demonstrated by using mesoporous carbon nanospheres (MCNs) as saturable absorbers (SAs). The MCNs are prepared by a “silica-assisted” method, and then mixed with sodium carboxymethylcellulose (NaCMC) to form the MCNs film. The film not only shows strong absorption from visible to mid-infrared spectral region, but also possesses the nonlinear saturable absorption properties. As the MCNs film is inserted into the laser cavity, a mode-locked laser at 1 µm and Q-switched lasers at 1.56 and 2 µm are realized, respectively. In addition, by depositing the MCNs onto tapered fiber as an SA, a mode-locked fiber laser at 2 µm is also demonstrated. The results show that MCNs are promising SA material for broadband pulsed laser generation.
Original language | English |
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Article number | 1800606 |
Journal | Advanced Optical Materials |
Volume | 6 |
Issue number | 16 |
DOIs | |
State | Published - 20 Aug 2018 |
Externally published | Yes |
Keywords
- Q-switched lasers
- mesoporous carbon nanospheres
- mode-locked lasers
- pulsed laser generation
- saturable absorbers