Polarization inversion method of ferroelectrics and fabrication method of optical wavelength conversion device

   
   

A method for forming a polarization inversion portion, in which electrodes with a predetermined pattern are formed on one surface of a ferroelectric crystal that has been subjected to a single polarization, and a local polarization inversion portion corresponding to the pattern of the electrodes is formed in the ferroelectric crystal by applying electric field to both front and back surfaces of the ferroelectric crystal via the electrodes, makes it possible to accurately form a polarization inversion pattern. In this method, portions of the ferroelectric crystal corresponding to the respective electrodes and portions between these portions are subjected to a polarization inversion, and one polarization inversion portion is formed.

Um método para dar forma a uma parcela do inversion do polarization, em que os elétrodos com um teste padrão predeterminado são dados forma em uma superfície de um cristal ferroelectric que seja sujeitado a um único polarization, e a uma parcela local do inversion do polarization que corresponde ao teste padrão dos elétrodos é dado forma no cristal ferroelectric aplicando o campo elétrico à parte dianteira e às superfícies traseiras do cristal ferroelectric através dos elétrodos, faz possível dar forma exatamente a um teste padrão do inversion do polarization. Neste método, as parcelas do cristal ferroelectric que corresponde aos elétrodos respectivos e as parcelas entre estas parcelas são sujeitadas a um inversion do polarization, e uma parcela do inversion do polarization é dada forma.

 
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