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  1. Article

    Open Access

    Optomechanical crystals for spatial sensing of submicron sized particles

    Optomechanical crystal cavities (OMC) have rich perspectives for detecting and indirectly analysing biological particles, such as proteins, bacteria and viruses. In this work we demonstrate the working princip...

    D. Navarro-Urrios, E. Kang, P. **ao, M. F. Colombano, G. Arregui… in Scientific Reports (2021)

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  2. Article

    Open Access

    A self-stabilized coherent phonon source driven by optical forces

    We report a novel injection scheme that allows for “phonon lasing” in a one-dimensional opto-mechanical photonic crystal, in a sideband unresolved regime and with cooperativity values as low as 10−2. It extracts ...

    D. Navarro-Urrios, N. E. Capuj, J. Gomis-Bresco, F. Alzina… in Scientific Reports (2015)

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  3. Article

    Open Access

    Far-field characterization of the thermal dynamics in lasing microspheres

    This work reports the dynamical thermal behavior of lasing microspheres placed on a dielectric substrate while they are homogeneously heated-up by the top-pump laser used to excite the active medium. The lasin...

    J. M. Ramírez, D. Navarro-Urrios, N. E. Capuj, Y. Berencén… in Scientific Reports (2015)

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  4. No Access

    Article

    Optical gain by upconversion in Tm–Yb oxyfluoride glass ceramic

    Evidence of positive optical gain is observed in Tm3+–Yb3+-codoped oxyfluoride glass ceramic in an upconversion pump and probe experiment. The 1G4 level of the Tm3+ ions is populated by an upconversion mechanism ...

    P. Haro-González, I. R. Martín, F. Lahoz, N. E. Capuj in Applied Physics B (2011)

  5. No Access

    Article

    Localized desvitrifiation in Er3+-doped strontium barium niobate glass by laser irradiation

    Localized desvitrifiation in strontium barium niobate glass doped with Er3+ under laser irradiation has been carried out. The samples of this study have been fabricated by the melt quenching method and doped with...

    P. Haro-González, I. R. Martin, F. Lahoz, S. González-Pérez… in Applied Physics A (2008)

  6. No Access

    Article

    Upconversion emission in Er3+-doped lead niobium germanate thin-film glasses produced by pulsed laser deposition

    Thin films of Er3+-doped lead–niobium germanate have been produced by pulsed laser deposition from Er3+-doped 25PbO2–25Nb2O5–50GeO2 (mol%) transparent glasses with an Er content in the range 0.5–3 wt%. The room-t...

    F. Lahoz, P. Haro-Gonzalez, F. Rivera-López, S. González-Pérez… in Applied Physics A (2008)

  7. No Access

    Chapter

    Influence of Thickness Fluctuations on the Energy-Loss Spectra of Protons Transmitted Through Thin Films

    Structures appearing in the energy-loss spectra of energetic protons transmitted through thin Al films, such as peaks and shoulders, are studied as a function of both the bombarding energy and the tilt angle o...

    N. E. Capuj, M. M. Jakas in Interaction of Charged Particles with Solids and Surfaces (1991)

  8. No Access

    Chapter

    Thin Film Inhomogeneity Characterization by Ion Beam Technique

    As it is well known, when an ion beam traverses a thin solid foil, the ions are slowed down and dispersed in energy.

    N. E. Capuj, N. R. Arista, G. H. Lantchsner… in Plasma-Surface Interactions and Processing… (1990)

  9. No Access

    Chapter

    Theoretical Analysis of the Influence of Foil Inhomogeneities on the Angular Variation of the Energy-Loss

    When measuring the energy loss as a function of the exit angle for swift light ions traversing a thin film, a minimum around the beam direction can be observed (1–4). It indicates that less scattered ions lose...

    N. E. Capuj, M. M. Jakas in Plasma-Surface Interactions and Processing of Materials (1990)