Exploració per tema "nonlinear optics"

Ara es mostren els items 1-11 de 11

    • Custom nonlinearity profile for integrated quantum light sources 

      Poveda Hospital, Salvador (Universitat Politècnica de Catalunya, 2022-06-13)
      Projecte Final de Màster Oficial
      Accés obert
      Realitzat a/amb:   École polytechnique de Montréal
      Heralded single-photon sources are a fundamental building block for optical quantum technologies. These sources need to be unfiltered and integrated to have good scalability and avoid unnecessary losses. To attain this ...

    • Development of a tunable continuous wave optical parametric oscillator as a light source for characterizing optical components in the aerospace sector 

      Barceló Sàbat, Carla (Universitat Politècnica de Catalunya, 2021-07-19)
      Projecte Final de Màster Oficial
      Accés restringit per decisió de l'autor
      Realitzat a/amb:   Radiant Light

    • Enhancement of nonlinear optical phenomena by localized resonances 

      Rodríguez Echarri, A.; Cox, Joel D.; Yu, Renwen; García de Abajo, Francisco Javier (ACS, 2018-01-20)
      Article
      Accés obert
      Nonlinear optics at the nanoscale is severely limited by the small departure of available materials from linear behavior. Despite intense efforts placed into overcoming this problem using multiple strategies for enhancing ...

    • Generation of intrinsically CEP-stable few-cycle pulses in the mid-IR 

      Sánchez Peacham, Daniel Alexander (Universitat Politècnica de Catalunya, 2013-09-10)
      Projecte Final de Màster Oficial
      Accés obert
      [ANGLÈS] The generation of few cycle pulses in the mid-IR is investigated through a numerical non linear propagation code as a seed pulse for an OPCPA system

    • High-power, fiber-laser-pumped optical parametric oscillators from the visible to mid-infrared 

      Chaitanya Kumar, Suddapalli (Universitat Politècnica de Catalunya, 2012-01-18)
      Tesi
      Accés obert
      High-power, continuous-wave (cw), mid-infrared (mid-IR) laser sources are of interest for variety of applications such as trace gas detection and remote sensing, which require broad spectral coverage to address the most ...

    • Second and third harmonic generation in disordered quadratic nonlinear media: application to short-pulse characterization 

      Roppo, Vito; Wang, W.; Kalinowski, K.; Vilaseca Alavedra, Ramon; Trull Silvestre, José Francisco; Cojocaru, Crina; Staliunas, Kestutis; Krolikowski, Wieslaw; Kivshar, Yu. (2010)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      We study parametric frequency conversion in quadratic nonlinear media with disordered ferroelectric domains. We demonstrate that disorder allows realizing broadband second- and third-harmonic generation via cascading of ...

    • Second-harmonic generation in disordered quadratic media: role of a ferroelectric domain structure 

      Roppo, Vito; Kalinowski, K.; Wang, W.; Cojocaru, Crina; Trull Silvestre, José Francisco; Vilaseca Alavedra, Ramon; Scalora, M.; Krolikowski, Wieslaw; Kivshar, Yu. (2010)
      Text en actes de congrés
      Accés obert
      We study theoretically the second harmonic generation in a nonlinear quadratic crystal with random distribution of ferroelectric domains. We show that the specific features of disordered domain structure greatly affect the ...

    • Second-harmonic generation in disordered quadratic media: role of a ferroelectric domain structure 

      Roppo, Vito; Kalinowski, K.; Wang, W.; Cojocaru, Crina; Trull Silvestre, José Francisco; Vilaseca Alavedra, Ramon; Scalora, M.; Krolikowski, Wieslaw; Kivshar, Yu. (2010)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Naturally grown ferroelectric crystals such as Strontium Barium Niobate (SBN) often exhibit an irregular multidomain structure with rod-like domains [1]. These disordered nonlinear quadratic crystals have attracted a ...

    • Spatial walking solitons in quadratic nonlinear crystals 

      Torner Sabata, Lluís; Mihalache, Dumitru; Mazilu, Dumitru; Santos Blanco, M. Concepción; Akhmediev, Nail (Optical Society of America, 1998)
      Article
      Accés obert
      We investigate the properties of the families of spatial walking solitons propagating in planar waveguides made of quadratic nonlinear media under conditions for second-harmonic generation in the presence of Poynting vector ...

    • Supermode analysis of the three-waveguide nonlinear directional coupler: the critical power 

      Artigas García, David; Olivas Alguacil, Jesús; Dios Otín, Víctor Federico; Canal Bienzobas, Fernando (ELSEVIER SCIENCE BV, 1996-10-01)
      Article
      Accés obert
      The three-waveguide nonlinear directional coupler switching characteristic is studied using the eigenmodes of the structure (i.e. supermodes). This model, which is more exact than the one used in previous works, has allowed ...

    • Surface and bulk harmonic generation in the opaque region of GaAs 

      Rodríguez Suñé, Laura (Universitat Politècnica de Catalunya, 2018-09-06)
      Projecte Final de Màster Oficial
      Accés obert
      We demonstrate second and third harmonic generation from a GaAs substrate, far from the phase matching and well-below the absorption edge, in both transmission and reflection geometries. The pump is tuned in the transparency ...