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Two-, three- and higher multiphoton absorption processes are shown to occur in amyloid protein fibres, which are thought to play a role in various diseases, including Alzheimer's and Parkinson's diseases. The nonlinear optical behaviour of such proteins may also be useful for fabricating photonics devices.
With their ultrafast and high-power characteristics, fibre lasers are penetrating conventional laser markets as well as opening up exciting new opportunities.
The integrated optical components used for optical data transmission are technically complex. To keep pace with the exponential growth in communication traffic, researchers are exploring every potential avenue for inexpensively enhancing device performance.
Squeezed light allows quantum limits to be overcome in precision metrology. A new way of producing this special form of light has now been demonstrated by engineering the vibrations of nanostructured optical cavities.
Researchers have fabricated a voltage-tunable plasmonic crystal in a two-dimensional electron gas that operates at terahertz frequencies. Nature Photonics spoke to Eric Shaner, Greg Dyer and Greg Aizin about the observation of Tamm states at the crystal's edge.
Nature Photonics spoke to Anatoly Grudinin, founder of the fibre laser company Fianium, to gain insight into the vicissitudes in the industry over the past decade and future challenges that academia can help solve.
Nanotubes and graphene have emerged as promising materials for use in ultrafast fibre lasers. Their unique electrical and optical properties enable them to be used as saturable absorbers that have fast responses and broadband operation and that can be easily integrated in fibre lasers.
