Bell Telephone Laboratories

American Telephone & Telegraph Co., At&t Bell Laboratories

Richard L Fork

James Power Gordon

Charles Vernon Shank

Janis A Yaldmanis

Benjamin I Greene

A short pulse laser is described which has saturable absorption, saturable gain, group velocity dispersion, and self phase modulation means within a single optical cavity.

Short pulse laser

A ring cavity laser is disclosed wherein a Rhodamine 6G dye stream is used as the gain medium, and a saturable absorber stream is positioned in the ring cavity at a point such that the time difference between pulses arriving at the gain stream is not small compared to the recovery time of the gain medium. The saturable absorber is DODCI dissolved in ethylene glycol passed through a specially constructed nozzle that creates a dye stream having a thickness of about 10 microns in the optical cavity. As a result of this thin saturable absorber, the two counterpropagating pulses that collide in the saturable absorber are caused to interact in a way that results in a decrease of the pulse duration and an equalization of the pulse intensities.

Growing community of inventors

Middletown, NJ, United States of America

Richard L Fork