Observation of multireflections from cat self-pumped phase conjugators with Cu-doped (K_05Na_05)_02(Sr_075Ba_025)_09Nb_2O_6 crystals and conjugation fidelity analysis

The obvious influence of the internal photoinduced electric field on the formation of self-pumped phase conjugation in doped (K(0.5) Na(0.5))(0.2) (Sr(0.75) Ba(0.25))(0.9) Nb(2)O(6) crystals has been investigated with intermittent and continuous laser beams. An analysis is given that involves the migration of charge carriers driven by the photovoltaic (PV) and the pyroelectric (PY) electric field. Deviation from the optimal state of energy transfer owing to the PV effect and the self-adjusting of holograms owing to the PY field are the two important dominant processes in the self-pumped phase conjugator. The influence of the photoinduced electric field on the conjugation fidelity and the stability of the phase-conjugate output is also observed and analyzed. The bump feature of the two-wave mixing and the oscillating situation of the self-pumped phase conjugator are observed and are explained in view of the photoinduced internal field.

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Conjugation fidelity and bistability in a high-efficiency mutually pumped phase conjugator with ring channels

Zhang

Shao

et al. 1995

Opt. Lett.

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We describe a high-efficiency mutually pumped phase conjugator with ring channels in a bird-wing incident geometry in copper-doped potassium sodium strontium barium niobate. A transmissivity as great as 35% is measured. Optical switching is obtained. The dependence of phase-conjugation fidelity on the geometric parameters and the input-beam ratio is discussed. Some suggestions are proposed to improve the fidelity further. The response times as a function of the input-beam ratio with the input beam kept constant are measured, and the least-squares minimum is used to simulate the fitting curve equations and to explain the formation of optical switching and the reduction or improvement of image fidelity.

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Observation of multireflections from cat self-pumped phase conjugators with Cu-doped (K_05Na_05)_02(Sr_075Ba_025)_09Nb_2O_6 crystals and conjugation fidelity analysis

Cited by 3 publications

References 12 publications

Self-pumped forward and backward phase conjugator with Cu-doped KNSBN crystal: caused by scattering-oscillation-amplification

Self-pumped forward and backward phase conjugator with Cu-doped KNSBN crystal: caused by scattering-oscillation-amplification

Influence of the internal photoinduced electric field on the formation of self-pumped phase conjugation in doped (K_05Na_05)_02(Sr_075Ba_025)_09Nb_2O_6 crystals

Conjugation fidelity and bistability in a high-efficiency mutually pumped phase conjugator with ring channels

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