Browsing Øvrige samlinger by Journals "Optics Letters"

Now showing items 1-8 of 8

    • Beyond the 2D limit: étendue-squeezing line-focus solar concentrators 

      Johnsen, Håkon Jarand Dugstad; Aksnes, Astrid; Torgersen, Jan (Peer reviewed; Journal article, 2020)
      Line-focus solar concentrators are commonly designed by extruding a two-dimensional concentrator in the third dimension. For concentration in air, these concentrators are, by the nature of their design, limited by the ...

    • Dispersion of resonant modes in patch antenna lattices 

      Kildemo, Morten; Walmsness, Per Magnus; Hale, Nathan (Journal article; Peer reviewed, 2022)
      Spectroscopic polar angle resolved Mueller matrix ellipsometry at multiple azimuthal incidences, together with a full-field model, reveal new details in the interplay between localized gap surface plasmon resonances and ...

    • Kerr-lens mode-locked Cr:ZnS laser 

      Tolstik, Nikolai; Sorokin, Evgeni; Sorokina, Irina T (Journal article; Peer reviewed, 2013)
      We report the soft-aperture Kerr-lens mode-locked Cr:ZnS laser, generating 550 mW of 69 fs nearly transform-limited pulses at 2.39 μm wavelength. The pulse energy reached 3.8 nJ at 145 MHz repetition rate, limited by the ...

    • Logistic splicing correction for VNIR–SWIR reflectance imaging spectroscopy 

      Grillini, Federico; Thomas, Jean-Baptiste Denis; George, Sony (Peer reviewed; Journal article, 2023)
      In the field of spectroscopy, a splicing correction is a process by which two spectra captured with different sensors in adjacent or overlapping electromagnetic spectrum ranges are smoothly connected. In our study, we ...

    • Micro-lensed optical fibers for a surface-enhanced Raman scattering sensing probe 

      Milenko, Karolina Barbara; Fuglerud, Silje Skeide; Kjeldby, Snorre B; Ellingsen, Reinold; Aksnes, Astrid; Hjelme, Dag Roar (Journal article; Peer reviewed, 2018)
      We present the fabrication and characterization of a novel sensing configuration based on surface-enhanced Raman scattering (SERS) and two micro-lensed optical fibers. The first micro-lensed fiber is used to excite surface ...

    • Mid-IR frequency comb source spanning 4.4-5.4 mu m based on subharmonic GaAs optical parametric oscillator 

      Vodopyanov, KL; Sorokin, E; Sorokina, Irina T; Schunemann, PG (Journal article, 2011)
      Broadband mid-IR output suitable for producing 1000-nm-wide frequency combs centered at 4.9 μm was achieved in a degenerate subharmonic optical parametric oscillator (OPO) based on 500-μm-long Brewster-angled orientation-patterned ...

    • Optical properties of single diatom frustules revealed by confocal microspectroscopy 

      Romann, Julien Clement; Valmalette, Jean-Christophe; Røyset, Arne Karstein; Einarsrud, Mari-Ann (Journal article; Peer reviewed, 2015)
      Optical properties of single diatom frustule valves from two different Coscinodiscus species (C. wailesii and C. centralis) are studied by transmission confocal hyperspectral imaging and numerical calculations. Light ...

    • Perfect depolarization in single scattering of light from uncorrelated surface and volume disorder 

      Banon, Jean-Philippe Armand; Simonsen, Ingve; Carminati, Remi (Journal article, 2020)
      -polarized waves from uncorrelated surface and volume disorder can lead to perfect depolarization. The degree of polarization vanishes in specific scattering directions that can be characterized based on simple geometric ...