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  • 2015 European Conference on Lasers and Electro-Optics - European Quantum Electronics Conference
  • (Optica Publishing Group, 2015),
  • paper EF_6_3

Temporal properties of counter-propagating twin beams close to the threshold for Mirrorless Optical Parametric Oscillation

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New fabrication techniques have recently achieved sub-micrometer poling periods in ferroelectric second-order nonlinear crystals which allows phase-matching for counter-propagating twin photons. Because of the presence of distributed feedback, the optical system has been shown to behave as a Mirrorless Optical Parametric Oscillator (MOPO) and exhibits peculiar spectral properties which strongly differ from those found in more common geometries involving co-propagating beams [1]. Moreover, the spectral properties of the counter-propagating interaction lend themselves to novel applications such as the transfer of coherent phase modulation from the pump beam into the co-propagating signal wave [3] and the production of slow light [4]. In addition, the use of type 0 quasi-phase matching exploited in KTiOPO4 (KTP) or LiNbO3 crystals (pump, signal and idler waves are all extraordinarily polarized) allows the use of the strong non-linear χ(2) coefficient characterizing this configuration.

© 2015 IEEE

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