Retro-modulator links with a mini-rover
An optical sensors web in a star pattern is formed and tested utilizing modulating retro-reflectors, where a multitude of senors was simulated by a retro-modulator on a mini-rover.
modulating retro-reflector↗
Engineering topics
Rabinovich, W. S.
Publications and source records attributed to Rabinovich, W. S..
Self-pulsing and bichromatic emission in homogeneously broadened bidirectional ring lasers
The effects of saturation-induced Bragg gratings on the mode structure and dynamics of bidirectional homogeneously broadened ring lasers are studied. The grating is viewed as a distributed feedback medium in a ring cavity and modes appropriate to such a structure are used. A Fourier decomposed rate equation model is developed to study the behavior of these modes above threshold. The difference in the properties of these solutions from the modes of an unfilled ring cavity lead to the possibility of bichromatic emission and both regular undamped and irregular damped self-pulsing.
Rabinovich, W. S.↗
Coupled Lorenz systems in an optically pumped CH3F laser
The output emission of a short CH3F metallic waveguide laser pumped by an injection-locked CO2 transversely excited atmosphere laser is studied experimentally. The output is found to be extremely unpredictable when lasing occurs in both the excited and ground vibrational states on two separate transitions (496 and 452 microns, respectively). The dynamics and sensitivity to initial conditions are explained in terms of two Lorenz lasers with pump coupled population inversions.
Rabinovich, W. S.↗
Bichromatic emission in a ring dye laser
An experimental study of a high-Q Rhodamine 6G ring dye laser has been performed, and bichromatic emission (BE) with wavelength spacings as large as 110 A when the laser operated bidirectionally has been measured. The BE vanished at all excitations when the laser was forced into unidirectional operation using a Faraday isolator. However, when a weak reflected beam was allowed to make a single pass in the direction opposite to that allowed by the Faraday device, BE is recovered at the higher pump powers.
Lawandy, N. M.↗