Structural properties of femtosecond laser-induced modifications in LiNbO3

被引：108

作者：

Burghoff, J.

Hartung, H.

Nolte, S.

Tuennermann, A.

机构：

[1] Univ Jena, Inst Angew Phys, D-07743 Jena, Germany

[2] Fraunhofer Inst Opt & Feinmech, D-07745 Jena, Germany

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2007年 / 86卷 / 02期

关键词：

D O I：

10.1007/s00339-006-3750-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Structural modifications induced by femtosecond laser pulses in LiNbO3 were studied. The influence of the processing and focusing parameters was investigated. Two different types of modifications could be identified. High laser fluences cause a refractive index decrease, material damage and stresses in the surrounding crystalline lattice. At low laser fluences, an extraordinary index increase was observed that allows for optical waveguiding. This kind of modification is thermally unstable and correlates to a weak distortion of the lattice. The electrooptic coefficient measured in a waveguide was found to be substantially reduced. The mechanisms underlying the structural modifications are discussed.

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页码：165 / 170

页数：6

相关论文

共 32 条

[1] STRUCTURAL AND OPTICAL-PROPERTIES OF ANNEALED PROTON-EXCHANGED WAVE-GUIDES IN Z-CUT LITAO3 [J].

AHLFELDT, H ;

WEBJORN, J ;

THOMAS, PA ;

TEAT, SJ .

JOURNAL OF APPLIED PHYSICS, 1995, 77 (09) :4467-4476

[2] Causes of refractive indices changes in He-implanted LiNbO3 and LiTaO3 waveguides [J].

Atuchin, VV .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2000, 168 (04) :498-502

[3] Nonlinear refractive index of fs-laser-written waveguides in fused silica [J].

Blömer, D ;

Szameit, A ;

Dreisow, F ;

Schreiber, T ;

Nolte, S ;

Tünnermann, A .

OPTICS EXPRESS, 2006, 14 (06) :2151-2157

[4] SELF-CHANNELING OF HIGH-PEAK-POWER FEMTOSECOND LASER-PULSES IN AIR [J].

BRAUN, A ;

KORN, G ;

LIU, X ;

DU, D ;

SQUIER, J ;

MOUROU, G .

OPTICS LETTERS, 1995, 20 (01) :73-75

[5]

BURGHOFF J, UNPUB APPL SURF SCI

[6] 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)

[7] Light-induced charge transport processes in photorefractive crystals .1. Models and experimental methods [J].

Buse, K .

APPLIED PHYSICS B-LASERS AND OPTICS, 1997, 64 (03) :273-291

[8] Investigation of femtosecond laser assisted nano and microscale modifications in lithium niobate [J].

Deshpande, DC ;

Malshe, AP ;

Stach, EA ;

Radmilovic, V ;

Alexander, D ;

Doerr, D ;

Hirt, D .

JOURNAL OF APPLIED PHYSICS, 2005, 97 (07)

[9] Transmission electron microscopy studies of femtosecond laser induced modifications in quartz [J].

Gorelik, T ;

Will, M ;

Nolte, S ;

Tuennermann, A ;

Glatzel, U .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2003, 76 (03) :309-311

[10] Microstructure in lithium niobate by use of focused femtosecond laser pulses [J].

Gui, L ;

Xu, BX ;

Chong, TC .

IEEE PHOTONICS TECHNOLOGY LETTERS, 2004, 16 (05) :1337-1339

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