| Autor: |
Woodward, RI, Kelleher, EJR, Howe, RCT, Hu, G, Torrisi, F, Hasan, T, Popov, SV, Taylor, JR |
| Přispěvatelé: |
Howe, Richard [0000-0001-5086-0699], Hu, Guohua [0000-0001-9296-1236], Torrisi, Felice [0000-0002-6144-2916], Hasan, Tawfique [0000-0002-6250-7582], Apollo - University of Cambridge Repository |
| Jazyk: |
angličtina |
| Rok vydání: |
2014 |
| Předmět: |
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| Popis: |
We fabricate a few-layer molybdenum disulfide (MoS₂) polymer composite saturable absorber by liquid-phase exfoliation, and use this to passively Q-switch an ytterbium-doped fiber laser, tunable from 1030 to 1070 nm. Self-starting Q-switching generates 2.88 μs pulses at 74 kHz repetition rate, with over 100 nJ pulse energy. We propose a mechanism, based on edge states within the bandgap, responsible for the wideband nonlinear optical absorption exhibited by our few-layer MoS₂ sample, despite operating at photon energies lower than the material bandgap. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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