Confocal Raman imaging of optical waveguides in LiNbO3 fabricated by ultrafast high-repetition rate laser-writing

被引：44

作者：

Rodenas, Airan ^{[1
]}

Nejadmalayeri, Amir H. ^{[2
]}

Jaque, Daniel ^{[1
]}

Herman, Peter ^{[3
,4
]}

机构：

[1] Univ Autonoma Madrid, Fac Ciencias, Dept Fis Mat, GIEL, E-28049 Madrid, Spain

[2] MIT, Elect Res Lab, Cambridge, MA 02139 USA

[3] Univ Toronto, Dept Elect & Comp Engn, Photon Grp, Toronto, ON M5S 3G4, Canada

[4] Univ Toronto, Inst Opt Sci, Toronto, ON M5S 3G4, Canada

来源：

OPTICS EXPRESS | 2008年 / 16卷 / 18期

关键词：

D O I：

10.1364/OE.16.013979

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on the confocal Raman characterization of the microstructural lattice changes induced during the high-repetition rate ultrafast laser writing of buried optical waveguides in lithium niobate (LiNbO3) crystals. While the laser beam focal volume is characterized by a significant lattice expansion together with a high defect concentration, the adjacent waveguide zone is largely free of defects, undergoing only slight rearrangement of the oxygen octahedron in the LiNbO3 lattice. The close proximity of these two zones has been found responsible for the propagation losses of the guided light. Subjacent laser-induced periodic micro-structures have been also observed inside the laser focal volume, and identified with a strong periodic distribution of lattice defects.

引用

页码：13979 / 13989

页数：11

共 42 条

[1] Electro-optic properties in pure LiNbO3 crystals from the congruent to the stoichiometric composition [J].

Abdi, F ;

Aillerie, M ;

Bourson, P ;

Fontana, MD ;

Polgar, K .

JOURNAL OF APPLIED PHYSICS, 1998, 84 (04) :2251-2254

[2] Proton exchanged waveguides in LiNbO3 and LiTaO3 for integrated lasers and nonlinear frequency converters [J].

Baldi, P ;

De Micheli, MP ;

El Hadi, K ;

Nouh, S ;

Cino, AC ;

Aschieri, P ;

Ostrowsky, DB .

OPTICAL ENGINEERING, 1998, 37 (04) :1193-1202

[3] Femtosecond laser inscription of low insertion loss waveguides in Z-cut lithium niobate [J].

Bookey, Henry T. ;

Thomson, Robert R. ;

Psaila, Nicholas D. ;

Kar, Ajoy K. ;

Chiodo, Nicola ;

Osellame, Roberto ;

Cerullo, Giulio .

IEEE PHOTONICS TECHNOLOGY LETTERS, 2007, 19 (9-12) :892-894

[4] Extraordinary stability of anisotropic femtosecond direct-written structures embedded in silica glass [J].

Bricchi, E ;

Kazansky, PG .

APPLIED PHYSICS LETTERS, 2006, 88 (11)

[5] Origins of waveguiding in femtosecond laser-structured LiNbO3 [J].

Burghoff, J. ;

Nolte, S. ;

Tuennermann, A. .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2007, 89 (01) :127-132

[6] Structural properties of femtosecond laser-induced modifications in LiNbO3 [J].

Burghoff, J. ;

Hartung, H. ;

Nolte, S. ;

Tuennermann, A. .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2007, 86 (02) :165-170

[7] Efficient frequency doubling in femtosecond laser-written waveguides in lithium niobate [J].

Burghoff, Jonas ;

Grebing, Christian ;

Nolte, Stefan ;

Tuennermann, Andreas .

APPLIED PHYSICS LETTERS, 2006, 89 (08)

[8] Ab initio structure and zone-center phonons in LiNbO3 [J].

Caciuc, V ;

Postnikov, AV ;

Borstel, G .

PHYSICAL REVIEW B, 2000, 61 (13) :8806-8813

[9] Single polarized Tm3+ laser in Zn-diffused LiNbO3 channel waveguides -: art. no. 161119 [J].

Cantelar, E ;

Sanz-García, JA ;

Lifante, G ;

Cussó, F .

APPLIED PHYSICS LETTERS, 2005, 86 (16) :1-3

[10] Development of ion-implanted optical waveguides in optical materials: A review [J].

Chen, Feng ;

Wang, Xue-Lin ;

Wang, Ke-Ming .

OPTICAL MATERIALS, 2007, 29 (11) :1523-1542

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