An increase of more than 30% in the electrooptic coefficients of Fe-doped and Ce-doped stoichiometric LiNbO3 crystals

Yukiko Kondo, Takeshi Fukuda, Yuri Yamashita, Koichi Yokoyama, Kanji Arita, Masato Watanabe, Yasunori Furukawa, Kenji Kitamura, Hirochika Nakajima

    Research output: Contribution to journalArticle

    15 Citations (Scopus)

    Abstract

    The composition dependences of the electrooptic coefficients in LiNbO3 crystals and the influence of doping with Ce-ions and Fe-ions were measured precisely and investigated in detail for the first time. The electrooptic coefficient r33 increases with an increase in the Li/Nb ratio. The r33 in stoichiometric LiNbO3 crystal was 1.14 times as large as that in conventional congruent LiNbO3 crystal whose electrooptic coefficient is 32.6 pm/V. The electrooptic coefficient r33 is also increased by doping with some ions. An increase of more than 30% in electrooptic coefficients (from those in nondoped congruent LiNbO3) can be obtained by doping with Ce- or Fe-ions. The lattice constants are also measured. The lattice constant along the c-axis decreases with an increase in the Li/Nb ratio, or by doping with Ce- or Fe-ions, and in this way the crystal structure changes into a less symmetric structure. This may be the reason why the electrooptic coefficient increases with an increase in the Li/Nb ratio or by doping with Ce- or Fe-ions.

    Original languageEnglish
    Pages (from-to)1477-1480
    Number of pages4
    JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
    Volume39
    Issue number3 B
    Publication statusPublished - 2000

    Fingerprint

    Electrooptical effects
    electro-optics
    Crystals
    Doping (additives)
    Ions
    coefficients
    crystals
    ions
    Lattice constants
    Crystal structure
    crystal structure
    Chemical analysis

    Keywords

    • Congruent
    • Doping
    • Electrooptic coefficient
    • LiNbO
    • Stoichiometric

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

    Cite this

    An increase of more than 30% in the electrooptic coefficients of Fe-doped and Ce-doped stoichiometric LiNbO3 crystals. / Kondo, Yukiko; Fukuda, Takeshi; Yamashita, Yuri; Yokoyama, Koichi; Arita, Kanji; Watanabe, Masato; Furukawa, Yasunori; Kitamura, Kenji; Nakajima, Hirochika.

    In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 39, No. 3 B, 2000, p. 1477-1480.

    Research output: Contribution to journalArticle

    Kondo, Y, Fukuda, T, Yamashita, Y, Yokoyama, K, Arita, K, Watanabe, M, Furukawa, Y, Kitamura, K & Nakajima, H 2000, 'An increase of more than 30% in the electrooptic coefficients of Fe-doped and Ce-doped stoichiometric LiNbO3 crystals', Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, vol. 39, no. 3 B, pp. 1477-1480.
    Kondo, Yukiko ; Fukuda, Takeshi ; Yamashita, Yuri ; Yokoyama, Koichi ; Arita, Kanji ; Watanabe, Masato ; Furukawa, Yasunori ; Kitamura, Kenji ; Nakajima, Hirochika. / An increase of more than 30% in the electrooptic coefficients of Fe-doped and Ce-doped stoichiometric LiNbO3 crystals. In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 2000 ; Vol. 39, No. 3 B. pp. 1477-1480.
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    abstract = "The composition dependences of the electrooptic coefficients in LiNbO3 crystals and the influence of doping with Ce-ions and Fe-ions were measured precisely and investigated in detail for the first time. The electrooptic coefficient r33 increases with an increase in the Li/Nb ratio. The r33 in stoichiometric LiNbO3 crystal was 1.14 times as large as that in conventional congruent LiNbO3 crystal whose electrooptic coefficient is 32.6 pm/V. The electrooptic coefficient r33 is also increased by doping with some ions. An increase of more than 30{\%} in electrooptic coefficients (from those in nondoped congruent LiNbO3) can be obtained by doping with Ce- or Fe-ions. The lattice constants are also measured. The lattice constant along the c-axis decreases with an increase in the Li/Nb ratio, or by doping with Ce- or Fe-ions, and in this way the crystal structure changes into a less symmetric structure. This may be the reason why the electrooptic coefficient increases with an increase in the Li/Nb ratio or by doping with Ce- or Fe-ions.",
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    AU - Arita, Kanji

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    N2 - The composition dependences of the electrooptic coefficients in LiNbO3 crystals and the influence of doping with Ce-ions and Fe-ions were measured precisely and investigated in detail for the first time. The electrooptic coefficient r33 increases with an increase in the Li/Nb ratio. The r33 in stoichiometric LiNbO3 crystal was 1.14 times as large as that in conventional congruent LiNbO3 crystal whose electrooptic coefficient is 32.6 pm/V. The electrooptic coefficient r33 is also increased by doping with some ions. An increase of more than 30% in electrooptic coefficients (from those in nondoped congruent LiNbO3) can be obtained by doping with Ce- or Fe-ions. The lattice constants are also measured. The lattice constant along the c-axis decreases with an increase in the Li/Nb ratio, or by doping with Ce- or Fe-ions, and in this way the crystal structure changes into a less symmetric structure. This may be the reason why the electrooptic coefficient increases with an increase in the Li/Nb ratio or by doping with Ce- or Fe-ions.

    AB - The composition dependences of the electrooptic coefficients in LiNbO3 crystals and the influence of doping with Ce-ions and Fe-ions were measured precisely and investigated in detail for the first time. The electrooptic coefficient r33 increases with an increase in the Li/Nb ratio. The r33 in stoichiometric LiNbO3 crystal was 1.14 times as large as that in conventional congruent LiNbO3 crystal whose electrooptic coefficient is 32.6 pm/V. The electrooptic coefficient r33 is also increased by doping with some ions. An increase of more than 30% in electrooptic coefficients (from those in nondoped congruent LiNbO3) can be obtained by doping with Ce- or Fe-ions. The lattice constants are also measured. The lattice constant along the c-axis decreases with an increase in the Li/Nb ratio, or by doping with Ce- or Fe-ions, and in this way the crystal structure changes into a less symmetric structure. This may be the reason why the electrooptic coefficient increases with an increase in the Li/Nb ratio or by doping with Ce- or Fe-ions.

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