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Polarization reversal and domain grating in flux-grown KTiOPO4 crystals with variable potassium stoichiometry
 

Summary: Polarization reversal and domain grating in flux-grown KTiOPO4 crystals
with variable potassium stoichiometry
G. Rosenman,a)
P. Urenski, and A. Arie
Department of Electrical Engineering-Physical Electronics, Tel Aviv University, Ramat-Aviv 69978, Israel
M. Roth
School of Applied Science, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
N. Angert and A. Skliar
Raicol Crystals Ltd., P.O.B. 3, Ariel 44837, Israel
M. Tseitlin
Research Institute, College of Judea and Samaria, Ariel 44837, Israel
Received 17 January 2000; accepted for publication 24 April 2000
A significant decrease is observed in the dielectric dispersion, conductivity, coercive and internal
fields of KTiOPO4 crystals grown with relatively high potassium concentration in the flux. A
periodic domain structure with a period of 24.7 m was fabricated on a 10 mm long crystal by
electric field poling. Whereas standard flux-grown KTiOPO4 crystals can be periodically poled only
at low temperatures near 170 K , the periodic poling in this case was successfully performed near
room temperature at a much lower electric field. Quasiphase-matched frequency doubling of 1550
nm radiation was achieved with the poled crystal. 2000 American Institute of Physics.
S0003-6951 00 00925-6

  

Source: Arie, Ady - Department of Electrical Engineering-Physical Electronics, Tel Aviv University

 

Collections: Engineering