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Second- and third-harmonic generation microscopy of monolayer MoS2 is reported for imaging and characterization of the material's nonlinearity. A telecommunication wavelength pump is used, revealing the material's promise for use in nonlinear optical devices.
We apply the concept of natural selection to intelligently find optimum operating regimes in a fiber laser — a multi-parameter space. Using a compound fitness function we reliably achieve self-optimizing mode-locked operation.
Few-layer transition metal dichalcogenides such as molybdenum disulfide (MoS2) present new opportunities for photonic devices. Here, we review recent progress in few-layer MoS2-based nonlinear optics and state-of-the-art pulsed lasers using this new nanomaterial.
We demonstrate a nanotube mode-locked fiber laser with low repetition rate (244 kHz), enabling supercontinuum generation in photonic crystal fiber spanning 600 to 2000 nm, at a low average pump power of 87 mW.
We report an environmentally stable nanotube mode-locked fiber laser producing linearly-polarized, nanosecond pulses. A simple all-polarization-maintaining fiber ring cavity is used, including 300 m of highly nonlinear fiber to elongate the cavity and increase intracavity dispersion and nonlinearity. The laser generates scalar pulses with a duration of 1.23 ns at a center wavelength of 1042 nm, with...
A reduced stimulated Brillouin scattering threshold power in small-core PCFs is achieved using visible wavelength excitation. We explain this in the context of acousto-optic interactions at length-scales relative to the fiber geometry.
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