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A polymer THz fiber made of Topas and having a Photonic Crystal Fiber structure is demonstrated. It has low broadband loss and the dispersion of the fiber can be tailored by adjusting the structural parameters.
We found that 25% of the input power of a 2 mum wavelength 1 kW peak-power source can be shifted into the region between 3-5 mum using an As2S3-based chalcogenide PCF. Tapering increases the output at wavelengths above 4 mum.
We investigate a new phase-matching scheme for pure state photon pair generation in birefringent photonic crystal fibres. We demonstrate 80% visibility non-classical interference between unfiltered photons coming from non-degenerate pairs and created in separate sources.
All-in-fiber SESAM-modelocked self-starting fiber laser is demonstrated. Cavity dispersion is managed by a spliced-in PM all-solid photonic bandgap fiber. The laser directly delivers 1.25 nJ pulses of 280 fs duration.
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