Recent Submissions

  • Domain statistics analysis of random nonlinear crystals via second harmonic generation 

    Wang, Bingxia; Cojocaru, Crina; Krolikowski, Wieslaw; Switowski, K; Yan Sheng, Yan Sheng; Akhouayri, H.; Vilaseca Alavedra, Ramon; Scalora, Michael; Trull Silvestre, José Francisco (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
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    We demonstrate an indirect non-destructive optical method for the characterization of ferroelectric domain size and distribution based on the analysis of the generated second harmonic spatial distribution. This method is ...
  • Harmonic generation at the nanoscale in strategic materials for nanophotonics 

    Rodríguez Suñé, Laura; Trull Silvestre, José Francisco; Scalora, Michael; Akozbek, Neset; Cojocaru, Crina (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2021)
    Conference report
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    The use of semiconductors, metals and conductive oxides in the process of fabrication of actual nano devices is at the front edge of nowadays technology, exploiting the properties of light propagation and localization at ...
  • Harmonic generation from gold nanolayers: bound and hot electron contributions 

    Rodríguez Suñé, Laura; Trull Silvestre, José Francisco; Cojocaru, Crina; Akozbek, Neset; Ceglia, Domenico de; Vincenti, M. A.; Scalora, Michael (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2021)
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    Currently, nanostructures are routinely fabricated and integrated in different photonic devices for a variety of purposes and applications. For instance, in order to engineer properly nano-antennas or filters, it is important ...
  • Sound directivity by PT-symmetric acoustic dipoles 

    Magariyachi, Tetsu; Arias Casals, Helena; Herrero Simon, Ramon; Botey Cumella, Muriel; Staliunas, Kestutis (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2021)
    Conference report
    Open Access
    The new physics of open-dissipative, non-Hermitian systems have become a fruitful playground to uncover novel physical phenomena, even in exotic or counterintuitive ways, especially in optics and, more recently, also in ...
  • Towards a feasible non-Hermitian light management 

    Botey Cumella, Muriel; Herrero Simon, Ramon; Staliunas, Kestutis (2020)
    Conference report
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    Novel physical phenomena arising from the interplay between gain and loss is beyond the recent focus on Non-Hermitian systems. The spatial symmetry breaking in such systems may lead to an arbitrarily control of the flow ...
  • Spatiotemporal stabilization of PT-symmetric BAS lasers 

    Medina Pardell, Judith; Herrero Simon, Ramon; Botey Cumella, Muriel; Staliunas, Kestutis (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2020)
    Conference report
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    We propose a compact solution to spatially regularize and temporally stabilize edge emitting (broad area) semiconductor lasers. The scheme relays on the local asymmetries generated by a non-Hermitian potential with a central ...
  • Flat focusing mirrors 

    Staliunas, Kestutis; Cheng, Yu-Chiech; Kicas, Simonas; Trull Silvestre, José Francisco; Cojocaru, Crina; Peckus, Martynas; Vilaseca Alavedra, Ramon; Drazdys, Ramutis (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference report
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    We present the flat focusing mirror - the dielectric mirrors capable to focus and image the narrow beams in reflections. The mirrors are flat, and transversally invariant, i.e. have no optical axis. We consider two different ...
  • Second harmonic generation from an ITO nanolayer: experiment versus theory 

    Rodríguez Suñé, Laura; Scalora, Michael; Johnson, Allan; Cojocaru, Crina; Akozbek, Neset; Coppens, Zachary; Pérez Salinas, Daniel; Wall, Simon; Trull Silvestre, José Francisco (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2020)
    Conference report
    Open Access
    We report a comparative experimental and theoretical study of second harmonic generation from a 20nm-thick indium tin oxide nanolayer in the proximity of the epsilon-near-zero condition. We record the efficiency of the ...
  • Forecasting the amplitude of high-intensity chaotic laser pulses 

    Amil, Pablo; Cornelles Soriano, Miguel; Masoller Alonso, Cristina (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2020)
    Conference report
    Open Access
    Forecasting the dynamics of chaotic systems from the analysis of their output signals is a challenging problem with applications in most fields of modern science. In this work, we use a laser model to compare the performance ...
  • Experimental study of the neuron-like dynamics of a semiconductor laser with optical feedback and current modulation 

    Tiana Alsina, Jordi; Quintero Quiroz, Carlos Alberto; Masoller Alonso, Cristina (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2020)
    Conference report
    Open Access
    Excitable lasers that mimic neuronal activity can be building blocks of ultra-fast neuro-inspired information processing systems, which can revolutionize the fields of optical signal processing, optical computing and ...
  • New algorithms to characterize and classify ophthalmic images 

    Amil, Pablo; Masoller Alonso, Cristina (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2020)
    Conference report
    Open Access
    Unprecedented advances in machine learning have led to a variety of algorithms for the remote evaluation of biomedical images, allowing for cost-effective early detection of diseases. In particular, a lot of efforts are ...
  • Motional behavior estimation using simple spectral estimation: application to the off-shore wind lidar 

    Salcedo Bosch, Andreu; Rocadenbosch Burillo, Francisco; Gutiérrez Antuñano, Miguel Ángel; Tiana Alsina, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2020)
    Conference report
    Open Access
    This paper proposes two methods to estimate the so-called “characteristic motional period” of a floating wind-lidar buoy. These techniques aim to characterise the buoy's pitch and roll tilting as simple harmonic motions ...

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