紫外激光诱导近化学计量比钽酸锂晶体铁电畴反转

职亚楠; 刘德安; 曲伟娟; 周煜; 刘立人; 杭寅

光学学报, 2007, 27 (12): 2220, 网络出版: 2007-12-15

紫外激光诱导近化学计量比钽酸锂晶体铁电畴反转

Ultraviolet Laser-Induced Ferroelectric Domain Inversion in Nearly-Stoichiometric LiTaO₃Crystal

论文大纲

职亚楠 ^*刘德安曲伟娟周煜刘立人杭寅

作者单位

中国科学院上海光学精密机械研究所, 上海 201800

摘要

对紫外激光诱导近化学计量比钽酸锂晶体铁电畴反转进行了实验研究。波长为351 nm的连续紫外激光被聚焦在近化学计量比钽酸锂晶体的-z表面,同时沿与晶体自发极化相反的方向施加均匀外电场。实验证实紫外激光辐照可以有效地降低晶体畴反转所需的矫顽电场,采用数字全息干涉测量技术检测证实在激光辐照区域实现局域畴反转。研究表明采用紫外激光诱导可以实现对近化学计量比钽酸锂晶体铁电畴反转的局域控制。提出了物理机理的理论分析,认为外电场和激光辐照场的共同作用在晶体内部产生高浓度、大尺寸的缺陷结构,缺陷一定程度上降低畴体成核和畴壁运动所需要克服的退极化能和畴壁能,实现激光诱导畴反转。

Abstract

Ultraviolet laser-induced ferroelectric domain inversion in nearly-stoichiometric LiTaO3 was investigated. The continuous ultraviolet laser with 351 nm wavelength was focused on the -z surface of nearly-stoichiometric LiTaO3, and the homogeneous electric field which was antiparallel to the direction of spontaneous polarization was applied simultaneously. It is proved that the coercive field is effectively reduced by the laser radiation. The local domain inversion induced in the laser radiation area is confirmed by the digital holographic interferometry. The investigation proves that the ferroelectric domain inversion can be locally controlled by the ultraviolet laser irradiation. It is regarded that the defect structure with jumbo size and high density in the crystal lattice is generated by the complex coaction of incident irradiation field and external electric field. The defect dominates the nucleation by reducing depolarization energy and domain-wall energy required for domain-nucleus growth and domain wall movement, and the laser-induced domain inversion is realized.

参考文献

[1] . H. Kung, Z. D. Gao et al.. Efficient periodically poled stoichiometric lithium tantalate optical parametric oscillator for the visible to near-infrared region[J]. Opt. Lett., 2005, 30(18): 2451-2453.

[2] . D. Gao, S. N. Zhu, Shih-Yu Tu et al.. Monolithic red-green-blue laser light source based on cascaded wavelength conversion in periodically poled stoichiometric lithium tantalate[J]. Appl. Phys. Lett., 2006, 89(18): 181101-181103.

[3] . Yamada, N. Nada, M. Saitoh et al.. First-order quasi-phase matched LiNbO3 waveguide periodically poled by applying an external field for efficient blue second-harmonic generation[J]. Appl. Phys. Lett., 1993, 62(5): 435-436.

[4] . -P. Meyn, C. Laue, R. Knappe et al.. Fabrication of periodically poled lithium tantalate for UV generation with diode lasers[J]. Appl. Phys. B, 2001, 73(2): 111-114.

[5] Lü Hang, Chen Xianfeng, Chen Lijun et al.. Electrical-poling technology of lithium tantalate for quasi-velocity-matching phase modulator[J]. Chin. J. Lasers, 2006, 33(3): 371～375 (in Chinese)
吕航,陈险峰,陈理军等. 准速度匹配相位调制器钽酸锂晶体的室温电场极化技术[J]. 中国激光, 2006, 33(3): 371～375

[6] Chen Yunlin, Xu Jingjun, Song Feng et al.. Study on technology of periodic poling bulk LiNbO3 by applying external field[J]. Acta Optica Sinica, 2001, 21(5): 618～620 (in Chinese)
陈云琳,许京军,宋峰等. 外加电场极化法制备LiNbO3周期性畴反转的工艺研究[J]. 光学学报, 2001, 21(5): 618～620

[7] . Influence of ultraviolet illumination on the poling characteristics of lithium niobate crystals[J]. Appl. Phys. Lett., 2003, 83(9): 1824-1826.

[8] . C. Wengler, B. Fassbender, E. Soergel et al.. Impact of ultraviolet light on coercive field, poling dynamics and poling quality of various lithium niobate crystals from different sources[J]. J. Appl. Phys., 2004, 96(5): 2816-2820.

[9] . Dierolf, C. Sandmann. Direct-write method for domain inversion patterns in LiNbO3[J]. Appl. Phys. Lett., 2004, 84(20): 3987-3989.

[10] . L. Sones, M. C. Wengler, C. E. Valdivia et al.. Light-induced order-of-magnitude decrease in the electric field for domain nucleation in MgO-doped lithium niobate crystals[J]. Appl. Phys. Lett., 2005, 86(21): 212901-212903.

[11] Xi Qingxin, Liu Dean, Zhi Yanan et al.. Experimental study of ultraviolet laser-induced domain reversion in LiNbO3 crystals[J]. Acta Optica Sinica, 2005, 25(3): 431～432 (in Chinese)
奚庆新,刘德安,职亚楠等. 铌酸锂晶体紫外激光诱导畴反转实验研究[J]. 光学学报, 2005, 25(3): 431～432

[12] . . Wavelength dependence of light-induced domain nucleation in MgO-doped congruent LiNbO3 crystal[J]. Appl. Phys. Lett., 2007, 90(4): 042904-042906.

[13] . Tuschel et al.. Time dependence of ferroelectric coercive field after domain inversion for lithium-tantalate crystal[J]. Appl. Phys. Lett., 1995, 67(8): 1066-1068.

[14] . Large photoinduced ferroelectric coercive field increase and photodefined domain pattern in lithium-tantalate crystal[J]. Appl. Phys. Lett., 1996, 69(25): 3803-3805.

[15] . Ross, Peter G. R. Smith, Robert W. Eason. Optical control of electric field poling in LiTaO3[J]. Appl. Phys. Lett., 1997, 71(3): 309-311.

[16] Paul T. Brown, Graeme W. Ross, Robert W. Eason et al.. Control of domain structures in lithium tantalate using interferometric optical patterning[J]. Opt. Commun., 1999, 163(4～6): 310～316

[17] . . Ridge-shape phase distribution adjacent to 180° domain wall in congruent LiNbO3 crystal[J]. Appl. Phys. Lett., 2006, 89(11): 112912-112914.

[18] . . Visualization of domain inversion region characteristics in RuO2∶LiNbO3 crystal by digital holographic interferometry[J]. Acta Physica Sinica, 2006, 55(8): 4276-4281.

[19] . Electrostatic considerations in BaTiO3 domain formation during polarization reversal[J]. J. Appl. Phys., 1957, 28(2): 227-234.

职亚楠, 刘德安, 曲伟娟, 周煜, 刘立人, 杭寅. 紫外激光诱导近化学计量比钽酸锂晶体铁电畴反转[J]. 光学学报, 2007, 27(12): 2220. 职亚楠, 刘德安, 曲伟娟, 周煜, 刘立人, 杭寅. Ultraviolet Laser-Induced Ferroelectric Domain Inversion in Nearly-Stoichiometric LiTaO₃Crystal[J]. Acta Optica Sinica, 2007, 27(12): 2220.

紫外激光诱导近化学计量比钽酸锂晶体铁电畴反转

关于本站 Cookie 的使用提示

全站搜索

紫外激光诱导近化学计量比钽酸锂晶体铁电畴反转

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索