Trompeter, HenrikeNeshev, DragomirDesyatnikov, Anton SPertsch, ThomasPeschel, UlfLederer, FalkKrolikowski, WieslawSukhorukov, AndreyKivshar, Yuri2009-08-262010-12-202009-08-262010-12-20Physical Review Letters 96.5 (2006): 053903/1-40031-90071079-7114http://hdl.handle.net/10440/773http://digitalcollections.anu.edu.au/handle/10440/773We report on the first experimental observation of photonic Bloch oscillations and Zener tunneling in two-dimensional periodic systems. We study the propagation of an optical beam in a square lattice superimposed on a refractive index ramp.We observe oscillations of the beam inside the first Brilloin zone and tunneling of light from the first to the higher-order bands of the lattice band gap spectrum.4 pageshttp://www.sherpa.ac.uk/romeo/index.php "Author can archive pre-print (ie pre-refereeing) … post-print (ie final draft post-refereeing) … [and] publisher's version/PDF. Link to publisher version … [and] Copyright notice required. Publisher's version/PDF can be used on … employers web site." - from SHERPA/RoMEO site (as at 25/02/10). ©2006 The American Physical SocietyKeywords: Electron tunneling; Energy gap; Light propagation; Oscillations; Photons; Refractive index; Photonic Bloch oscillations; Two-dimensional photonic lattices; Zener tunneling; Crystal lattices2006-02-0910.1103/PhysRevLett.96.0539032015-12-12