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Nonlinear integrated optics in proton-exchanged lithium niobate waveguides and applications to classical and quantum optics

Nonlinear integrated optics in proton-exchanged lithium niobate waveguides and applications to classical and quantum optics

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In this paper, we will see in more detail how the modal dispersion present in any waveguide can replace or be combined with the birefringence to fulfil the phase-matching condition.

Chapter Contents:

  • 8.1 Introduction
  • 8.2 Proton exchange in LiNbO3,
  • 8.2.1 The first discoveries: High δne, low loss
  • 8.2.2 Combination with birefringence phase matching
  • 8.2.3 Cerenkov configuration
  • 8.2.4 Destruction of the X2 and strain-induced losses in channel waveguides
  • 8.3 Periodic poling
  • 8.3.1 Surface domains: Titanium diffusion and heat treatment
  • 8.3.2 E-Field poling
  • 8.3.3 The different PE processes and their impact on the nonlinearity of the crystal
  • 8.3.3.1 Direct exchange
  • 8.3.3.2 Annealing
  • 8.3.3.3 IR absorption
  • 8.3.3.4 Nonlinear optical properties of PE lithium niobate waveguides
  • 8.3.4 PE and periodic poling
  • 8.3.4.1 PE in PPLN crystals
  • 8.3.4.2 E-field poling of PE samples
  • 8.3.5 Components
  • 8.3.5.1 SHG
  • 8.3.5.2 Parametric fluorescence
  • 8.3.5.3 DFG and amplification
  • 8.4 Single photon pair generators
  • 8.5 Quantum photonics integrated circuits on PPLN
  • 8.5.1 Quantum relay
  • 8.5.2 Squeezed states
  • 8.6 Further improvements
  • 8.6.1 Power-resistant materials
  • 8.6.2 Highly confining waveguides
  • 8.6.2.1 High-index soft proton-exchanged (HISoPE) waveguides
  • 8.6.2.2 Thin-film lithium niobate
  • 8.7 Today's issues
  • 8.7.1 Control of the domains
  • 8.7.1.1 E-beam poling of PE samples
  • 8.7.2 Insensitive phase-matching configurations
  • 8.7.2.1 Experimental observation of insensitive phase-matching configurations
  • 8.7.2.2 Numerical studies of the phase mismatch
  • 8.8 Conclusion
  • Acknowledgments
  • References

Inspec keywords: ion exchange; optical phase matching; optical dispersion; optical waveguides; lithium compounds

Other keywords: classical optics; LiNbO3; modal dispersion; quantum optics; nonlinear integrated optics; proton-exchanged lithium niobate waveguides; birefringence; phase-matching condition

Subjects: Optical waveguides; Optical propagation, transmission and absorption; Nonlinear optics; Optical waveguides and couplers; Nonlinear optics and devices

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