KNbO3
KNbO3(鈮酸鉀)晶體(簡(jiǎn)稱KN)是非常重要的非線性光學(xué)晶體之一。其非線性光學(xué)品質(zhì)因數(shù)d2 /n3 ，在所有的氧化物晶體中名列第一，KN的平均折射率為2.2，反射率的理論值為14%，理論透過率為86%。。該晶體化學(xué)性質(zhì)穩(wěn)定，非線性光學(xué)系數(shù)大，對(duì)半導(dǎo)體860nm激光直接倍頻(101mW)已得到近40mW的430nm藍(lán)光。KN晶體由于其特殊的性能，使其成為微激光器這一新用途開發(fā)的一個(gè)重要環(huán)節(jié)。藍(lán)色激光器的實(shí)現(xiàn)是當(dāng)務(wù)之急，而KN晶體正是產(chǎn)生二次諧波，實(shí)現(xiàn)藍(lán)色激光器的最理想的材料之一。
特點(diǎn)
- 毫秒響應(yīng)時(shí)間；
- 非常低的散射損耗；
- 非線性光學(xué)系數(shù)大；
- 非線性光學(xué)系數(shù)高；
- 出色的光折變特性；
- 光照射下的高穩(wěn)定性；
- 有利的相位匹配特性；
物化性質(zhì)
| 化學(xué)式 | KNbO3 |
| 晶體結(jié)構(gòu) | 斜方，mm2 |
| 晶格參數(shù) | a = 5.6896?, b = 3.9692?, c = 5.7256? |
| 質(zhì)量密度 | 4.617 g/cm3 |
| 熔點(diǎn) | 1333 K |
| 居里溫度 | 498 K |
| 介電軸和結(jié)晶軸的分配 | ?X, Y, Z ? b, a, c |
| P = 0.101325MPa時(shí)的比熱cp | cp= 767 J/kgK |
| 導(dǎo)熱系數(shù) | κ > 3.5 W/mK |
| 熱膨脹 | aa=5.010×10-6 /℃; ab=1.410×10-5/℃; ac=5.010×10-7/℃ |
非線性光學(xué)性質(zhì)
| 屬性 | 數(shù)值 |
| 非線性光學(xué)系數(shù) | d31=-15.8 pm/V, d32=-18.3 pm/V @ 1064 nm |
| 最短SHG波長 | 425 nm（Ⅰ型NCPM，y切或a切） |
| Ⅰ型SHG的接受角為1064 nm | Dq = 0.24 mrad / cm（內(nèi)部） |
| Ⅰ型SHG的接受溫度為1064 nm | DT=0.3 ℃/cm |
線性光學(xué)性質(zhì)
| 屬性 | 數(shù)值 |
| 透明范圍 | 400-5500 nm |
| 紅外截止波長 | 5.5 μm |
| 吸收損失 | <=1%/cm @1064 nm |
| 損傷閾值 | <= 4 J/cm2 @527 nm（500ps，單脈沖） |
| <= 6 J/cm2 @1054 nm（700ps，單脈沖） |
相位匹配角實(shí)驗(yàn)值（T=293K）
| 相互作用波長[μm] | φexp?[deg] | θexp?[deg] |
| XY平面，θ=90° | ||
| SHG, e + e???o | ||
| 0.946???0.473 | ≈30 | ? |
| 4.7599???2.37995 | 69.9 | ? |
| YZ 平面, φ = 90° | ||
| SHG, o + o ??e | ||
| 0.86 ? 0.43 | ? | 83.5 |
| 0.89 ? 0.445 | ? | 70.7 |
| 0.92 ? 0.46 | ? | 64 |
| 0.94 ? 0.47 | ? | 60.5 |
| 1.0642 ? 0.5321 | ? | 46.4 |
| 1.3188 ? 0.6594 | ? | 30.6 |
| 1.3382???0.6691 | ? | 29.7 |
| 3.5303???1.76515 | ? | 37.3 |
| 4.7291???2.36455 | ? | 77.3 |
| SFG, o + o???e | ||
| 1.3188 + 0.6594???0.4396 | ? | 62.3 |
| 1.3188 + 1.0642???0.5889 | ? | 37.7 |
| 4.7762 + 3.1841???1.9105 | ? | 46.6 |
| 5.2955 + 3.5303???2.1182 | ? | 59.5 |
| XZ 平面, φ = 0°, θ > Vz | ||
| SHG, o + o???e | ||
| 1.0642???0.5321 | ? | 70.4 |
| 1.3188???0.6594 | ? | 56.8 |
| 1.3382???0.6691 | ? | 56.2 |
| 3.5303???1.76515 | ? | 58.8 |
| SFG, o + o???e | ||
| 1.3188 + 1.0642???0.5889 | ? | 62.6 |
| 5.2955 + 3.5303???2.1182 | ? | 86.1 |
T=295K時(shí)溫度帶寬的實(shí)驗(yàn)值
| 相互作用波長[μm] | θexp?[deg] | ΔT [?C] |
| YZ 平面, φ = 90° | ||
| SHG, o + o???e | ||
| 1.0642???0.5321 | 46.4 | 0.39 |
| 1.3382???0.6691 | 29.7 | 0.59 |
| 3.5303???1.76515 | 37.1 | 2.3 |
| SFG, o + o?? e | ||
| 5.2955 + 3.5303?? 2.1182 | 59.5 | 2.4 |
| XZ平面, φ = 0°, θ >Vz | ||
| SHG, o + o?? e | ||
| 1.0642???0.5321 | 71.4 | 0.77 |
| 1.3382???0.6691 | 56.2 | 2.2 |
| 3.5303???1.76515 | 58.1 | 10.1 |
光譜
 | 
|
| KNbO3-相位匹配角的溫度變化 | 室溫下KNbO3的折射率分散 |
 | 
|
| KNbO3-透射光譜 | KNbO3-光學(xué)吸收 |
參考文獻(xiàn)
| [1]? Baudisch M ,? Hemmer M ,? Pires H , et al. Performance of MgO:PPLN, KTA, and KNbO3 for mid-wave infrared broadband parametric amplification at high average power[J]. Optics Letters, 2014, 39(20):5802-5. |
| [2]? Kim J H ,? Yoon C S . Domain switching characteristics and fabrication of periodically poled potassium niobate for second-harmonic generation[J]. Applied Physics Letters, 2002, 81(18):3332-3334. |
| [3]? Zysset B ,? Biaggio I ,? Gunter P N . Refractive indices of orthorhombic KNbO3. I. Dispersion and temperature dependence[J]. Journal of the Optical Society of America B, 1992, 9(3). |
| [4]? Umemura N ,? Yoshida K ,? Kato K . Phase-Matching Properties of KNbO_3 in the Mid-Infrared[J]. Applied Optics, 1999, 38(6):991-994. |
| [5]? Uematsu Y . Nonlinear Optical Properties of KNbO3 Single Crystal in the Orthorhombic Phase[J]. Japanese Journal of Applied Physics, 1974, 13(9):1362-1368. |
| [6]? Baumert J C ,? Hoffnagle J ,? Gunter P . Nonlinear Optical Effects In KNbO3 Crystals At AlxGa1_xAs, Dye, Ruby And Nd:YAG Laser Wavelengths.[C]// European Conference on Optics. International Society for Optics and Photonics, 1985. |
| [7]? Yoshiguchi T ,? Ota T ,? Adachi N . Crystal Growth of KNbO 3 by Solution-Dropping Method[J]. Materials Science Forum, 2007, 544-545:697-700. |
| [8]? Yamanouchi K ,? Wagatsuma Y ,? ODaGawa H , et al. Single crystal growth of KNbO3 and application to surface acoustic wave devices[J]. Journal of the European Ceramic Society, 2001, 21(15):2791-2795. |
| [9] Shao-Yi, Yong-Qiang, Zhang, et al. First-principles study of structural, electronic, elastic, and optical properties of cubic KNbO3 and KTaO3 crystals[J]. Physica status solidi, B. Basic research, 2017, 254(5). |
| [10]? Grabowska E . Selected perovskite oxides: Characterization, preparation and photocatalytic properties—A review[J]. Applied Catalysis B Environmental, 2016, 186:97-126. |
| [11]? Comes R ,? Lambert M ,? Guinier A . The chain structure of BaTiO3 and KNbO3[J]. Solid State Communications, 1968, 6(10):715-719. |
| [12]? Zgonik M ,? Schlesser R ,? Biaggio I , et al. Materials constants of KNbO3 relevant for electro- and acousto-optics[J]. Journal of Applied Physics, 1993, 74(2):1287-1297. |
| [13] MD Fontana,? Metrat G ,? Servoin J L , et al. Infrared spectroscopy in KNbO3 through the successive ferroelectric phase transitions[J]. Journal of Physics C Solid State Physics, 1984, 17(3):483-514. |
| [14] A, Magrez, E, et al. Growth of Single-Crystalline KNbO3 Nanostructures.[J]. ChemInform, 2006, 37(15):no-no. |
| [15]? Tennery V J ,? Hang K W . Thermal and X‐Ray Diffraction Studies of the NaNbO3KNbO3 System[J]. Journal of Applied Physics, 1968, 39. |
| [16] Wu, Xing, and, et al. Progress in KNbO3 crystal growth[J]. Journal of Crystal Growth, 1986, 78(3):431-437. |
| [17]? Baumert J C , P Günter,? Melchior H . High Efficiency Second Harmonic Generation in KNbO3 Crystals[J]. Optics Communications, 1983, 48(3):215-220. |
| [18]? Currat R ,? Comes R ,? Dorner B , et al. Inelastic neutron scattering in orthorhombic KNbO3[J]. Journal of Physics C:Solid State Physics, 1974. |
| [19]? Matthews D G ,? Conroy R S ,? Sinclair B D , et al. Blue microchip laser fabricated from Nd:YAG and KNbO3[J]. Optics Letters, 1996, 21(3):198-200. |
| [20]? Krakauer H ,? Yu R ,? Wang C Z , et al. Dynamic local distortions in KNbO3[J]. Journal of Physics Condensed Matter, 1999, 11(18):3779. |
| [21] U, Flückiger, and, et al. On the preparation of pure, doped and reduced KNbO3 single crystals[J]. Journal of Crystal Growth, 1978. |
| [22]? Yang Y ,? Jung J H ,? Yun B K , et al. Flexible pyroelectric nanogenerators using a composite structure of lead-free KNbO(3) nanowires.[J]. Advanced Materials, 2012, 24(39):5357-5362. |
如果你對(duì)我們的KNbO3感興趣，請(qǐng)聯(lián)系我們獲取價(jià)格或申請(qǐng)樣品。
與KNbO3相關(guān)的文章：
暫無與本產(chǎn)品相關(guān)的文章，請(qǐng)?jiān)L問芯飛睿的文章頁面播放其他文章。
與KNbO3相關(guān)的案例：
暫無與本產(chǎn)品相關(guān)的案例，請(qǐng)?jiān)L問芯飛睿的案例頁面查看其他案例。
與KNbO3相關(guān)的解決方案：
暫無與本產(chǎn)品相關(guān)的解決方案，請(qǐng)?jiān)L問芯飛睿的解決方案頁面了解其他解決方案。
與KNbO3相關(guān)的視頻：
暫無與本產(chǎn)品相關(guān)的視頻，請(qǐng)?jiān)L問芯飛睿的視頻頁面播放其他視頻。