论文信息 - Low-pass, high-pass, and bandpass spatial-filtering characteristics of a BaTiO 3 phase conjugator

Low-pass, high-pass, and bandpass spatial-filtering characteristics of a BaTiO 3 phase conjugator

Spatial-frequency characteristics of the reflectivity and transmissivity of a BaTiO3 phase conjugator (PC) combined with extraordinary rays are investigated and numerical results obtained. It is shown that the reflection of a BaTiO3 PC represents a high-pass or a bandpass filter, whereas its transmission represents a low-pass or a bandpass filter. In addition, the filtering characteristics of this PC can be chosen by using appropriate values of such parameters as the average incident-beam angle from the c axis, the pump-beam intensity ratio, and the applied external electric field. A BaTiO3 PC exhibits characteristics that are quite different from those of a Bi12SiO20 PC, since the latter obtains only a high- or low-spatial-frequency filter.

Osamu Ikeda | O. Ikeda

[1] J P Huignard,et al. Phase-conjugation and spatial-frequency dependence of wave-front reflectivity in Bi12SiO20 crystals. , 1980, Optics letters.

[2] Amnon Yariv,et al. Theory and applications of four-wave mixing in photorefractive media , 1984 .

[3] Amnon Yariv,et al. Real‐time image processing via four‐wave mixing in a photorefractive medium , 1980 .

[4] Jack Feinberg,et al. Photorefractive effects and light‐induced charge migration in barium titanate , 1980 .

[5] H. Kogelnik. Coupled wave theory for thick hologram gratings , 1969 .

[6] J. P. Huignard,et al. Coherent signal beam amplification in two-wave mixing experiments with photorefractive Bi12SiO20 crystals , 1981 .

[8] J. Feinberg,et al. Phase-conjugating mirror with continuous-wave gain. , 1980, Optics letters.

[9] Jack Feinberg,et al. Asymmetric self-defocusing of an optical beam from the photorefractive effect , 1982 .

[10] Theo T. Tschudi,et al. Coherent CW image amplifier and oscillator using two-wave interaction in a BaTiO3-crystal , 1983 .

[11] Amplified phase-conjugate beam reflection by four-wave mixing with photorefractive Bi(12)SiO(20) crystals. , 1984, Optics letters.

[12] T Suzuki,et al. Image transmission through a turbulent medium using a point reflector and four-wave mixing in BSO crystal. , 1983, Applied optics.