TY - JOUR AU - He, Ruiyun AU - Hernández-Palmero, Irene AU - Romero Vázquez, Carolina AU - Vázquez de Aldana, Javier R. AU - Chen, Feng PY - 2014 UR - http://hdl.handle.net/10366/146044 AB - We report on the fabrication of three-dimensional waveguide beam splitters in a dielectric Bi4Ge3O12 (BGO) crystal by direct femtosecond laser writing. In the laser written tracks of BGO crystal, positive refractive index is induced, resulting in... LA - eng KW - Beam splitters KW - Femtosecond laser writing KW - Glass waveguides KW - Laser machining KW - Laser sources KW - Quantum cascade semiconductor lasers TI - Three-dimensional dielectric crystalline waveguide beam splitters in mid-infrared band by direct femtosecond laser writing DO - 10.1364/OE.22.031293 T2 - Optics Express VL - 22 M2 - 31293 ER -