1996 年 3 巻 3 号 p. 150-152
Thin film waveguides of germanosilicate glass are fabricated by rf-sputtering. Second-order nonlinearity of d33=3.2 pm/V is obtained from electrically poled film, and the lifetime of the nonlinearity is found to be 310 years. The poled channel-waveguide is prepared and the Cerenkov-type phase-matched frequency doubling is successfully observed.
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