Periodic poling of KTiOPO4 : From micrometer to sub-micrometer domain gratings

• Some novel techniques to do periodic poling of KTP are described. Emphasis on ways to avoid domain broadening and merging of domains is presented with reference to the original properties of flux grown KTP. For sub-Am structures E-beam lithography and deep UV-laser lithography were used to pattern the samples, and chemical process to promote selective poling to obtain high quality domain gratings in up to 1 mm thick samples.

Ämnesord

NATURVETENSKAP  -- Fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences (hsv//eng)

Nyckelord

KTP

periodic poling

domain gratings

flux-grown ktiopo4

2nd harmonic-generation

poled lithium-niobate

backward 2nd-harmonic generation

atomic-force microscopy

wave-guide

parametric oscillation

ferroelectric domains

crystals

reversal

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