Optical: systems and elements – Optical frequency converter
Reexamination Certificate
2008-06-11
2011-11-08
Petkovsek, Daniel (Department: 2874)
Optical: systems and elements
Optical frequency converter
C359S280000, C359S282000, C385S122000
Reexamination Certificate
active
08054536
ABSTRACT:
A method of inducing a periodic variation of nonlinearity value in a sample of ferroelectric material comprises arranging a pair of electrodes on opposite faces of the sample, one electrode defining a desired pattern of nonlinearity variation, applying a pre-bias voltage across the sample for a predetermined time using the electrodes, the pre-bias voltage being less than the coercive field of the ferroelectric material; and after the predetermined time, applying a current-controlled poling voltage across the sample using the electrodes, to produce domain inversion in the sample according to the desired pattern of nonlinearity variation. The pre-bias voltage may be 75% of the coercive field or more, and applied for a pre-determined time between 1 and 100 seconds.
REFERENCES:
patent: 6156255 (2000-12-01), Byer et al.
patent: 6800238 (2004-10-01), Miller
patent: 6952307 (2005-10-01), Apostolopoulos et al.
patent: 2008/0218846 (2008-09-01), Chu et al.
patent: 1801644 (2007-06-01), None
patent: 03/003111 (2003-01-01), None
patent: 2006/041176 (2006-04-01), None
International Search Report and Written Opinion for corresponding application No. PCT/GB2008/001993 dated Aug. 28, 2008.
United Kingdom Search Report for corresponding application No. GB0711275.8 dated Sep. 6, 2007.
Busacca et al., “Surface periodic poling in lithium niobate and lithium tantalate”, Fibres and Optical Passive Components, 2005, pp. 126-130.
Yazdani et al., “Ferroelectric domain inversion in congruent lithium niobate”, Microwave and Optoelectronics Conference, 2003, pp. 453-458.
Myers et al., “Quasi-phase-matched Optical Parametric Oscillators in Bulk Periodically Poled LINB03”, Journal of the Optical Society of America, 1995, pp. 2102-2116.
Yamada et al., “First-order Quasi-phase-matched LINB03 Waveguide Periodically Poled by Applying an External Field for Efficient Blue Second-Harmonic Generation”, Applied Physics Letter, 1993, pp. 435-436.
Gawith Corin Barry Edmund
Major Huw Edward
Ming Lu
Smith Peter George Robin
Petkovsek Daniel
Renner , Otto, Boisselle & Sklar, LLP
University of Southampton
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