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| Nanosecond Pulse, Dual-Wavelength Q-switched 1.5 ?m Fiber Laser Using MAX Phase Cr2TiAlC2 Saturable Absorber |
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| Abstract: |
| We demonstrated a new type of MAX phase material, Chromium Titanium Aluminum Carbide (Cr2TiAlC2) polymer film to generate a passively Q-switched erbium-doped fiber laser. The film thickness was measured around 45 ?m which was fabricated using the embedding method with PVA polymer as hoster. The SA film demonstrates a dual-wavelength passively Q-switched erbium-doped fiber laser (EDFL) which operates at 1531 nm and 1560.19 nm, respectively. The Q-switching pulse duration could be varied from 2.46 ?s to 770 ns while the repetition rate varied from 92.76 kHz to 106.6 kHz with an increasing input pumping range of 154 mW to 300 mW. The maximum output power and pulse energy of 15.05 mW and 141.18 nJ were obtained at a maximum input power of 300 mW, respectively. To the best of our knowledge, this is the first time that on dual-wavelength Q-switched EDF laser by Cr2TiAlC2 as SA. |
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