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Ferroelectric fluorides are the key materials for the SHG in the UV/VUV by the QPM technique. Ferroelectric characteristics and large single crystal growth are addressed. UV SHG emission is demonstrated with BaMgF4 QPM devices.
We compare the oscillation thresholds and slope efficiencies in 10 ns pulsed eyesafe OPOs based on MgO-doped PPSLT and monolithic KTP. The optimal combination of low threshold and high slope efficiency is achieved with PPSLT.
BaMF4 (M=Mg, Zn) single crystals were grown by the Czochralski technique. Ferroelectric characters were measured, which are required for the SHG by the QPM technique. Periodical poling of domains with a period of 24 mum was carried out. Present results point towards the 193 nm SHG by the QPM technique.
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