Title :
Fabrication of ridge waveguides by femtosecond-laser structuring of (Yb, Nb):RTP/RTP using beam multiplexing with a Spatial Light Modulator
Author :
Ruiz de la Cruz, A. ; Cugat, J. ; Sole, Rosa Maria ; Ferrer, A. ; Massons, J. ; Mateos, Xavier ; Carvajal, J.J. ; Aguilo, Magdalena ; Lifante, Gines ; Diaz, Francesc ; Solis, Javier
Author_Institution :
Laser Process. Group, Inst. de Opt., Madrid, Spain
Abstract :
In this work we show the ultrafast laser fabrication of ridge waveguides in a (Yb, Nb):RbTiOPO4 (RTP) epilayer grown on a RTP substrate by liquid phase epitaxy [1]. The ribs are produced by machining trenches on the surface of the (Yb, Nb):RTP epilayer. In order to improve the verticality and roughness of the walls of the trenches, we have used the approximation scanning technique [2]. This approach has been enhanced in terms of speed and flexibility by using a Spatial Light Modulator (SLM) to multiplex the irradiation beam.
Keywords :
high-speed optical techniques; laser beam machining; liquid phase epitaxial growth; niobium; optical fabrication; optical waveguides; ridge waveguides; rubidium compounds; spatial light modulators; surface roughness; ytterbium; RTP substrate; RbTiOPO4:Yb,Nb; approximation scanning technique; epilayer; femtosecond-laser structuring; irradiation beam multiplexing; liquid phase epitaxy; machining; ridge waveguides; spatial light modulator; surface roughness; ultrafast laser fabrication; Laser beams; Modulation; Multiplexing; Optical device fabrication; Optical waveguides; Waveguide lasers;
Conference_Titel :
Lasers and Electro-Optics Europe (CLEO EUROPE/IQEC), 2013 Conference on and International Quantum Electronics Conference
Conference_Location :
Munich
Print_ISBN :
978-1-4799-0593-5
DOI :
10.1109/CLEOE-IQEC.2013.6801583
