Convective Gas Light Guides or Lens Trains for Optical Beam Transmission

摘要: A light beam can be confined and guided along a straight or gently curved path through gas by appropriate control of temperature gradients in the gas. Two types guides that take advantage convection to assist this are described. One is composed continuous, warm, open helix within cooler outer pipe containing The other series lenses, each which warmed as it moves an opposing pair short focusing tubes base warm chimney. rises chimney then cooled, whereupon falls ducts return tubes. Experiments were performed on type relative merits two compared. An approximate mathematical analysis operation second presented.