Rhodium-Doped Barium Titanate Phase-Conjugate Mirror for an All-Solid-State, High-Repetition-Rate, Diode-Pumped Nd:YAG Master-Oscillator Power Amplifier Laser.

Self-pumped phase conjugation in infrared-sensitive photorefractive rhodium-doped barium titanate (Rh:BaTiO(3)) is investigated with a kilohertz-repetition-rate, diode-pumped Nd:YAG laser. We also demonstrate the operation of a diode-pumped Nd:YAG master-oscillator power-amplifier system with such a compact and solid-state phase-conjugate mirror for wave-front restoration. We obtain near-diffraction-limited output pulses of 20-mJ energy at a repetition rate of 200 Hz and a 1-min response time of the phase-conjugate mirror.

[Toxocariasis and functional intestinal disorders. Presentation of 4 cases].

We report 4 cases of adults patients, suffering from irritable bowel syndrome, which had been attributed late to toxocariasis and for whom the treatment led to recovery. Hypereosinophilia was present only in 3 cases. These cases show that toxocariasis is not limited anymore to its two classical expressions: visceral larva migrans and ocular toxocariasis.

Phase-conjugate Nd:YAG laser with internal acousto-optic beam steering.

We propose and experimentally demonstrate a stimulated Brillouin scattering phase-conjugate Nd:YAG laser source with beam-steering capability. The laser, designed in an oscillator-amplifier configuration, incorporates a TeO(2) acousto-optic deflector on the low-energy beam. Output pulse energies in the range of 100-185 mJ and a 2.