Large Coherence Area Thin-Film Photonic Stop-Band Lasers

Large coherence area thin-film photonic stop-band lasers.

We demonstrate that the shift of the stop-band position with increasing oblique angle in periodic structures results in a wide transverse exponential field distribution corresponding to strong angular confinement of the radiation. The beam expansion follows an effective diffusive equation depending only upon the spectral mode width. In the presence of gain, the beam cross section is limited onl...

Large mode area Yb - doped photonic bandgap fiber lasers

Large mode area Yb-doped photonic bandgap fiber lasers Report Title Fiber lasers are in the process of revolutionizing modern manufacturing. Further power scaling is still much desired to increase throughput and to break new frontiers in science and defense. It has become very clear now that highly single-mode fibers with large effective mode areas are required to overcome both nonlinear effect...

Thin Film Lasers Integrated with Planar Waveguides

Structural characterization of thin film photonic crystals

We quantitatively analyze the structure of thin film inverse-opal photonic crystals composed of ordered arrays of air pores in a background of titania. Ordering of the sphere template and introduction of the titania background were performed simultaneously in the thin film photonic crystals. Nondestructive optical measurements of backfilling with high refractive index liquids, angle-resolved re...

Lasing in nanoimprinted two-dimensional photonic crystal band-edge lasers

V. Reboud, J. Romero-Vivas, P. Lovera, N. Kehagias, T. Kehoe, G. Redmond, and C. M. Sotomayor Torres Catalan Institute of Nanotechnology, Campus UAB, Edifici CM3, ES 08193—Barcelona, Spain CEA-LETI-Minatec Grenoble, 17 rue des Martyrs, 38054 Grenoble, France Surface Physics Division, Faculty of Physics, Adam Mickiewicz University, ul. Umultowska 85, Poznan 61-614, Poland Tyndall National Instit...