Dynamics of relaxation oscillation caused by stimulated Brillouin scattering in optical fiber and its suppression

For Bragg grating or Brillouin scattering strain sensors embedded in concrete,it has been shown that the micromechanics and behaviors of the interfaces between concrete and embedded fiberoptic are the key problem affecting measuring accuracy.

The discovery, types, mechanism, characteristics, theoretic description and experimental research development of stimulated thermal scattering are reviewed.

It was experimentally investigated that competition between stimulated thermal scattering (STS) and stimulated Brillouin scattering (SBS) in absorbing liquids and that its phase conjugation characteristic in a master oscillator power amplifier (MOPA) system with a cell containing acetone dyed with small amounts of Cu(NO 3) 2 served as phase-conjugation mirror.

Two kinds of self-pulsation are observed in the fiber laser with a low Q cavity, one is the pulse generated from passive Q-switching of saturable absorption; the other is the giant pulse due to stimulated Raman scattering (SRS) in the fiber.

Stimulated Raman scattering from interaction of 2ns,351nm laser with hohlraum;

Stimulated Raman scattering from holraum irradiated with 351nm laser light;

The effect of collision on stimulated Raman scattering;