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

Wang, Feng; Liu, Liren; Li, Guoqiang

doi:10.1016/s0030-4018(96)00499-3

Cited by 2 publications

(1 citation statement)

References 11 publications

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“…Indeed, a simpler idea is to directly take advantage of the internal reflections inside the non-linear slab to perform simultaneously forward and backward PC over the whole angular spectrum. Albeit simpler and more powerful, this way of performing forward PC has only been investigated in a few studies, both theoretically [43] and experimentally [44,45].…”

Section: Introductionmentioning

confidence: 99%

Mimicking a negative refractive slab by combining two phase conjugators

Aubry

Pendry

2009

J. Opt. Soc. Am. B

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A new route toward a lossless superlens has been proposed recently. It relies on the association of two phaseconjugating sheets. The aim of this study is to show how such a lens can be implemented experimentally at optical frequencies. Because efficient phase conjugation of evanescent waves is illusory with the current technology, only the case of propagating waves is considered here. Four wave mixing in BaTiO 3 is shown to provide efficient backward and forward phase conjugation over a major part of the angular spectrum, taking advantage of internal reflections inside the non-linear slab. However, phase distortions arise for high spatial frequencies and limit the resolving power of the device. The addition of a second phase-conjugator automatically compensates for these phase distortions. The wave field is then perfectly translated through the system. Actually, such a device performs even better than a negative refracting lens since the association of two phase-conjugating mirrors behaves like a resonant cavity. An amplification of the wave field by a factor of 10 2 in intensity is predicted, despite the important absorption in BaTiO 3 .

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Section: Introductionmentioning

confidence: 99%

Mimicking a negative refractive slab by combining two phase conjugators

Aubry

Pendry

2009

J. Opt. Soc. Am. B

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Generation of Forward Phase-Conjugate Beam by Cu:KNSBN-Cat Type Self-Pumped Phase-Conjugator

Doi¹,

Sasaki²,

Iwata³

et al. 1999

Jpn. J. Appl. Phys.

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A forward phase-conjugate beam was generated using a copper-doped (K0.5Na0.5)0.2(Sr0.61Ba0.39)0.9Nb2O6 (Cu:KNSBN) crystal with Cat type self-pumped phase-conjugator incident geometry. This Cat self-pumped phase-conjugator was formed simply with a small incident beam diameter of 0.4 mm at an incidence angle of 30°. In this configuration, the forward phase-conjugate beam could be generated at the same time with the self-pumped phase-conjugate beam. Furthermore, it was possible to generate the forward phase-conjugate beam while maintaining the high reflectivity of the self-pumped phase-conjugate beam. A forward phase-conjugate reflectivity of 0.9% was achieved at a self-pumped phase-conjugate reflectivity of 12%.

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

Cited by 2 publications

References 11 publications

Mimicking a negative refractive slab by combining two phase conjugators

Mimicking a negative refractive slab by combining two phase conjugators

Generation of Forward Phase-Conjugate Beam by Cu:KNSBN-Cat Type Self-Pumped Phase-Conjugator

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