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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea


  • Vol. 15, Iss. 2 — Jun. 1, 2011
  • pp: 182–186

Poling Quality Enhancement of PPLN Devices Using Negative Multiple Pulse Poling Method

Ju-Won Choi, Jung-Hoon Ro, Do-Kyeong Ko, and Nan-Ei Yu  »View Author Affiliations

Journal of the Optical Society of Korea, Vol. 15, Issue 2, pp. 182-186 (2011)

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A poling method using multiple negative voltage was introduced to fabricate periodically poled lithium niobate (PPLN) devices with quasi-phase matching (QPM) period of 12.9 μm by utilizing an real-time visualization system. We also performed variation of the electric field during the poling. Two different conventionally used poling method, negative and positive single pulses, were used and the poling quality compared through microscopic images and far-field diffraction pattern analysis. Etched images on the +z and –z surfaces of PPLN showed that negative multiple pulse poling presented the highest periodicity in domain structures among the three methods. Duty ratio and its standard deviation were measured by analyzing far-field diffraction patterns. The newly introduced method of negative multiple pulse poling had duty ratio of 0.42 which was close to the ideal value of 0.50 and standard deviation of 0.020 that was about 3 times smaller than that of the other conventional methods.

© 2011 Optical Society of Korea

OCIS Codes
(160.2260) Materials : Ferroelectrics
(160.3730) Materials : Lithium niobate
(190.4360) Nonlinear optics : Nonlinear optics, devices

Original Manuscript: January 31, 2011
Revised Manuscript: April 6, 2011
Manuscript Accepted: April 19, 2011
Published: June 25, 2011

Ju-Won Choi, Jung-Hoon Ro, Do-Kyeong Ko, and Nan-Ei Yu, "Poling Quality Enhancement of PPLN Devices Using Negative Multiple Pulse Poling Method," J. Opt. Soc. Korea 15, 182-186 (2011)

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