Monolayer graphene as a saturable absorber in a mode-locked laser
By Q. Bao, Han Zhang, Zhenhua Ni, Yu Wang, L. Polavarapu, Zexiang Shen, Qinghua Xu, Daiming Tang, K. Loh. 2010
455 citations recorded by the source corpus.
We demonstrate that the intrinsic properties of monolayer graphene allow it to act as a more effective saturable absorber for mode-locking fiber lasers when compared to multilayer graphene. The absorption of monolayer graphene can be saturated at lower excitation intensity compared to multilayer graphene, graphene with wrinkle-like defects, or functionalized graphene. Monolayer graphene has a remarkably large modulation depth of 65.9%, whereas the modulation depth of multilayer graphene is greatly reduced due to nonsaturable absorption and scattering loss. Picosecond ultrafast laser pulses (1.23 ps) can be generated using monolayer graphene as a saturable absorber. Due to the ultrafast relaxation time, larger modulation depth and lower scattering loss of monolayer graphene, it performs better than multilayer graphene in terms of pulse shaping ability, pulse stability, and output energy.
Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/243db8486d1ae6f6672a983b5e3a62503cbde82f
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In Atomic and Molecular Physics, and Optics
- Michael Hochberg
- T. Baehr‐Jones
- Marin Soljačić
- Dirk Englund
- Nicholas Christopher Harris
- G. Soboń
- Mihika Prabhu
In Materials Chemistry
Citations in the corpus
- Intelligent nanophotonics: merging photonics and artificial intelligence at the nanoscale (2018, unknown): “attenuators or amplifiers [165,166].”
- Deep learning with coherent nanophotonic circuits (2016, background): “We assume a saturable absorber threshold of p (cid:39) 1 MW/cm 2 – valid for many dyes, semiconductors, and graphene [21, 22].”
- Mode-locking of fiber lasers using novel two-dimensional nanomaterials: graphene and topological insulators [Invited] (2015, methodology): “The CVD technique allows obtaining high quality graphene with a precisely controlled number of layers, starting from monolayer (grown on SiC [63] or Cu substrates [64]) up to multilayer (on Ni foils”