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Second-harmonic generation (SHG) is a fundamental nonlinear optical wave-mixing process which is very useful as frequency conversion device in an all-optical WDM network as well as for conversion into wavelengths where existing laser sources cannot reach. Our goal is to design a photonic crystal fiber (PCF) where SHG of ultra-short femtosecond (fs, 1e-15 s) pulses is as efficient as possible. This implies that the dispersion between the pump light and the generated second harmonic has to be controlled carefully. Considering that they have completely different wavelengths (the pump wavelength is twice the second harmonic wavelength), this is not a trivial task. Additionally, the PCF design must be optimized to have a strong nonlinear wave-mixing interaction, and this property does not necessarily coincide with optimal dispersion.
Financing sourceForskningsrådene - SNF
Research programmeForskningsrådene - STVF
Amount1,600,000.00 Danish kroner
Project ID70291
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ID: 2280442