P. Piksarv

Publications (7)7.4 Total impact

• Source

  Available from: Heli Lukner

  Article: Directly recording diffraction phenomena in time domain

  P. Saari, P. Bowlan, H. Valtna-Lukner, M. Lõhmus, P. Piksarv, R. Trebino
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  ABSTRACT: By making use of a new technique for measuring the complete spatiotemporal electric field of light with micrometer spatial and femtosecond temporal resolution, we directly demonstrate the formation of the so-called boundary diffraction wave and Arago’s spot, as well as the superluminal propagation of a “diffraction-free” pulse. We believe that such spatiotemporally resolved measurements and the time-domain treatment of diffracting waves not only turn out to be useful for modern physical optics, especially in micro- and meso-optics, but also significantly aid in the understanding of diffraction phenomena in general.
  Laser Physics 04/2012; 20(5):948-953. · 3.61 Impact Factor
• Article: Diffraction of ultrashort optical pulses from circularly symmetric binary phase gratings.

  M Lõhmus, P Bowlan, P Piksarv, H Valtna-Lukner, R Trebino, P Saari
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  ABSTRACT: The complete spatiotemporal characterization of the diffracted field of ultrashort pulses after passing through circularly symmetric binary phase diffraction gratings is carried out. The complex field is registered at different planes behind the gratings with an ultrashort-pulse measurement technique called SEA TADPOLE. Numerical simulations based on scalar diffraction theory are compared with the measurements.
  Optics Letters 04/2012; 37(7):1238-40. · 3.40 Impact Factor
• Article: TIME-AND-SPACE-DOMAIN STUDY OF DIFFRACTING AND NON-DIFFRACTING LIGHT PULSES

  P Saari, P Bowlan, H Valtna-Lukner, M Lohmus, P Piksarv, R Trebino
  Lithuanian Journal of Physics 01/2010; 50(1). · 0.39 Impact Factor
• Conference Proceeding: Measuring the spatiotemporal electric field of superluminal ultrashort pulses

  P. Bowlan, R. Trebino, H. Valtna-Lukner, M. Lohmus, P. Piksarv, P. Saari
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  ABSTRACT: Using a high spatial and temporal-resolution pulse measurement technique (SEA TADPOLE), we make direct measurements of the spatiotemporal field of ultrashort Bessel-X pulses. Their propagation invariance and superluminal velocity are measured and verified with simulations.
  Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on; 07/2009
• Conference Proceeding: Directly measuring the spatiotemporal electric field of ultrashort Bessel-X pulses

  P. Bowlan, R. Trebino, H. Valtna-Lukner, M. Lohmus, P. Piksarv, P. Saari
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  ABSTRACT: Using SEA TADPOLE with mum-range spatial and fs-range temporal resolution, we report the first direct spatiotemporal measurements of ultrashort Bessel-X pulses. We demonstrate their propagation invariance and superluminal velocity and verify our results with simulations.
  Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on; 07/2009
• Source

  Available from: Heli Lukner

  Article: Measuring the spatio-temporal field of diffracting ultrashort pulses

  P. Bowlan, M. Lohmus, P. Piksarv, H. Valtna-Lukner, P. Saari, R Trebino
  [show abstract] [hide abstract]
  ABSTRACT: Using SEA TADPOLE, we directly measure the spatio-temporal field of diffracting ultrashort pulses with femtosecond temporal and micrometer spatial resolutions. Using a circular aperture and an opaque disk, we observe boundary wave pulses including their superluminal speeds. Comment: 2 pages, 3 figures Submitted to Frontiers in Optics 2009 on May 25, 2009
  05/2009;
• Source

  Available from: Heli Lukner

  Article: Directly measuring the spatiotemporal electric field of ultrashort Bessel-X pulses

  P. Bowlan, R Trebino, H. Valtna-Lukner, M. Lohmus, P. Piksarv, P. Saari
  [show abstract] [hide abstract]
  ABSTRACT: Using SEA TADPOLE with micrometer-range spatial and femtosecond-range temporal resolution, we report the first direct spatiotemporal measurements of ultrashort Bessel-X pulses. We demonstrate their propagation invariance and superluminal velocity and verify our results with simulations Comment: 2 pages 1 figure Submitted to CLEO/IQEC 09 on December 2, 2008
  04/2009;