Generation of millijoule-level sub-5 fs violet laser pulses

We demonstrate the generation, spectral broadening and post-compression of second harmonic pulses using a thin beta barium borate (BBO) crystal on a fused-silica substrate as the nonlinear interaction medium.By combining second harmonic generation in the BBO crystal with Healthy Aging Formulas self-phase modulation in the fused-silica substrate, we

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Riparian woodland encroachment following flow regulation: a comparative study of Mediterranean and Boreal streams

Water development accompanying mankind development has turned rivers into endangered ecosystems.Improving the understanding of ecological responses to river management actions is a key issue for assuring sustainable water management.However, few studies have been published where ecological metrics have been quantified in response to various degrees

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