A 2-D micro-Raman analysis of femtosecond laser written waveguides in LiNbO3

M. R. TEJERINA; D.JAQUE; G. A. TORCHIA

Sevilla

Congreso; EUROMAT 2013; 2013

Since ultra-fast laser writing (pulses of hundreds of femtoseconds) emerged, it has become a feasible tool for "one-step" optical circuit fabrication[1,2,3]. For this reason, much research has been carried out into testing the optical characteristics of the femtosecond laser written waveguide. In this report, a bi-dimensional m-Raman mapping of femto-waveguides in Nd:Mg:LiNbO3 is fitted with a numerical elastic model [4,5].As a result, the refractive index field of the analyzed waveguide and the Lithium Niobatepiezo-spectroscopic behavior were obtained. [1]H.Misawa and S. Juadkasis. 3D Laser Microfabrication: Principles and Applications. WILEY-VCH. (2006). [2]W. J. Reichman Understanding How Femtosecond Laser Waveguide Fabrication in Glasses Works, Univesidad de California (2006). [3]C. Schaffer. Interaction of femtosecond laser pulses with transparent materials. Thesis PhD. Harvard University, Cambrigde, Massachusetts, (2001). [4] Tejerina M.R., Torchia G.A., Jaque D. μ-Raman spectroscopy characterization of LiNbO3 femtosecond laser written waveguides J. Appl. Phys. 112, 123108 (2012). [5] M.Tejerina, G.A.Torchia. ?MATFESA: strain and Refractive index field estimation after femtosecond laser interaction with transparent material. App.Phys.A 110, 591(2013).