Journal: Science Advances
Article Title: Spontaneous symmetry breaking in plasmon lattice lasers
doi: 10.1126/sciadv.adn2723
Figure Lengend Snippet: ( A ) K- point lasing in hexagonal plasmon lattice lasers occurs on two decoupled modes, degenerate in frequency and space, and only differing in parity. Spontaneous symmetry breaking occurs in relative amplitude between the K and K′ mode (parity breaking) and in relative phase [ U (1) symmetry breaking]. ( B ) The phase space maps to the unit sphere, where the distance from the equator maps parity breaking, and the azimuth maps relative phase. ( C ) Plasmon lattices are embedded in a planar polymer waveguide with organic dye to provide gain. We study lasing in a high–numerical aperture (NA) microscope with single-shot real-space and Fourier imaging capabilities, synchronized to a 20-Hz train of pump pulses (515 nm, 250 fs).
Article Snippet: We use 170-μm-thick microscope cover slips (Menzel) as substrates.
Techniques: Polymer, Microscopy, Imaging