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129 635 (0,227s)

Result

First Experimentally Observed Self-Organized Parametric Down Conversion in Optical Fibers

The theoretically predicted self-organized parametric down conversion (the amplification of fundamental radiation on account of the energy of second-harmonic radiation) in doped optical fibers was experimentally demonstrated for the first ti...

BH - Optika, masery a lasery

  • 2001
  • Jx
Result

Self-organized quadratic nonlinear optical phenomena in optical fibers: A critical review of up-to-day models and prognoses on further development of the research

A model of self-organized second-harmonic generation is discussed in the view of recent experiments. A new phenomenological model including memory is proposed....

BH - Optika, masery a lasery

  • 1999
  • D
Result

Calibration Device

amplitudes or single harmonic in the range (2nd - 50th), f) Output power 2 x 10W.Calibration Device is built as an autonomous computer controlled generator of two synchronous harmonic line voltages with the follow...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2007
  • X
Result

Investigation if Self-Organized Degenerate Second-Order Nonlinear Optical Interactions in Optical Fibers Around and Above the Saturation

We report about self-organized nonlinear optical phenomena in optical fibers around the saturation state.

BH - Optika, masery a lasery

  • 2001
  • D
Result

Suppression of 2nd harmonic voltage ripple in single phase active rectifiers

The research report deals with methods of suppressing the 2nd harmonic voltage ripple in the DC link of single phase active rectifiers. The first part of the report describes the theory and the individual methods of suppression with...

Electrical and electronic engineering

  • 2017
  • O
Result

Squezed-light generation in a nonlinear planar waveguide with a periodic corrugation

Two-mode nonlinear interaction (second-harmonic and second-subharmonic generation) in a pla- nar waveguide with a small periodic corrugation at the surface is studied. Scattering of the interact- ing fields on the corrugation leads ...

BH - Optika, masery a lasery

  • 2007
  • Jx
Result

Approximation representation of Legendre functions of the 1st and the 2nd kind for constructing Galerkin?s matrix and Earth?s gravity field modelling in the system of ellipsoidal coordinates

Similarly as spherical harmonics also ellipsoidal harmonics have a close tie equation. Ellipsoidal harmonics can be taken for a system produced by eigenfunctions ellipsoidal harmonics are getting importance. This i...

DE - Zemský magnetismus, geodesie, geografie

  • 2015
  • D
Result

Approximation representation of Legendre functions of the 1st and the 2nd kind for constructing Galerkin?s matrix and Earth?s gravity field modelling in the system of ellipsoidal coordinates

Similarly as spherical harmonics also ellipsoidal harmonics have a close tie equation. Ellipsoidal harmonics can be taken for a system produced by eigenfunctions ellipsoidal harmonics are getting importance. This i...

DE - Zemský magnetismus, geodesie, geografie

  • 2015
  • A
Result

Photoinduced nonlinear optical effects in the Pr doped BiB3O6 glass nanoparticles incorporated into the polymer matrices

Photoinduced second harmonic generation was studied in Pr3+ doped bismuth triborate glasses (BiB3O6:Pr) and their nanoparticles (NP) incorporated into the polymethylmethacrylate (PMMA) and polycarbonate (PC) matrices The process of ...

BO - Biofyzika

  • 2009
  • Jx
Result

Restoration of Ultrasound Images Using the 1st and 2nd Harmonic Signal

and 2nd harmonic, coming from a broadband transducer. Based on the presented the enveloopes of thedeconvolved images of both harmonics are summed together to create......

JD - Využití počítačů, robotika a její aplikace

  • 2004
  • D
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