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| 特性 | 【当社開発】 定比組成 LiTaO3 (SLT) スーパーLT |
CLT比較 |
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| 結晶系 | 三方晶 |
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| 空間群 | R3c |
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| キュリー温度 :Tc（℃） 1 表 | Tc（℃） |
690 695 (MgO-doped) |
|
| [Li2O]:[Ta2O5]モル比 ( Tcより推定) |
49.95：50.05 |
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| 格子定数 c (nm) | c0 (nm) |
0.51509 |
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| 格子定数 a (nm) | a0 (nm) |
1.3773 |
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| 吸収端 (nm) 2 表 | nm |
270 |
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| 屈折率 3 表 | no |
2.1770 @633nm |
|
ne |
2.1745 @633nm |
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| 複屈折 | ne-no |
-0.0025 @633nm |
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| 線形電気光学定数 4 | r31(pm/V) |
8.4 @633nm |
|
r33(pm/V) |
30.5 @633nm |
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| 非線形光学定数 5 表 (CLTに対する測定値) |
d31(pm/V) |
0.85 |
|
d33(pm/V) |
13.8 |
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| 分極反転電圧（室温,抗電界) 6 | Ec (kV/mm) |
＜ 1.7 |
CLTの約1/13 |
| 熱伝導率 7 表 | W/(m・K) |
8.78 8.43 (MgO-doped) |
CLTの約2倍 |
| Photorefractiveダメージ閾値 8 表 | MW/cm2 @532nm |
2 |
CLTの約200倍 |
| GRIIRA 9 表 | ppm/cm @3.6kW/cm2 CW Green |
<100 〜50 (MgO-doped) |
CLTの1/3以下 |
1M.Nakamura et al., "Refractive Indices in Undoped and MgO-doped Near-Stoichiometric LiTaO3 Crystals", Jpn. J. Appl. Phys. 41 L465 (2002)
2Handbook of Advanced Electronic and Photonic Materials and Devices, edited by H.S. Nalwa, "Volume 4: Ferroelectrics and Dielectrics",
Chapter 2, p..62 (2001)
Chapter 2, p..62 (2001)
2 V.Gopalan et al., Crystal Growth, Characterization, and Domain Studies in Lithium Niobate and Lithium Tantalate Ferroelectrics
3M.Nakamura et al., "Refractive Indices in Undoped and MgO-doped Near-Stoichiometric LiTaO3 Crystals", Jpn. J. Appl. Phys. 41 L465 (2002)
4Onuki, K., Uchida, N., Saku, T.., "Interferometric Method for Measuring Electro-ptic Coefficients in Crystals", J. Opt. Soc. Am. 62 (1972) 1030
5I.Shoji et al., "Absolute scale of second-order onlinear-optical coefficiencts" J.Opt. Soc. Am. B 14 p.2268 (1997)
6T.Hatanaka et al. "Quasi-phase-matched optical parametric oscillation with periodically poled stoichiometric LiTaO3", J.Opt. Soc. Am. B 14
p.2268 (1997)
p.2268 (1997)
7K. Kitamura et al., Oyo buturi 74, p.573 (2005)
8K..Kitamura et al., "Non-stoichiometric control of LiNbO3 and LiTaO3 in ferroelectric domain engineering for optical devices", Ferroelectrics
257, p.235 (2001)
257, p.235 (2001)
9K..Kitamura et al., "Non-stoichiometric control of LiNbO3 and LiTaO3 in ferroelectric domain engineering for optical devices", Ferroelectrics
257, p.235 (2001)
257, p.235 (2001)
