Ruby laser

About: Ruby laser is a research topic. Over the lifetime, 2474 publications have been published within this topic receiving 38933 citations. The topic is also known as: corundum laser & ruby rod.

Material processing—An overview

Abstract: Laser researchers in the early 1960's found that a ruby laser could easily melt and vaporize small amounts of metal. Many investigations have since been performed to determine the effects of high-power laser radiation on absorbing surfaces. By the late 1960's lasers had become practical production tools. In the early 1970's, advances in the power of CO 2 lasers led to deep penetration laser welding. This greatly increased the range of metal thickness amenable to laser processing. At present, lasers are used in a practical way for many applications in material processing. For some applications, like trimming of resistors and drilling of holes in ceramics, laser processing is the leading method. For other applications like heat treating, welding, and cutting, laser processing is an economically competitive alternative to conventional techniques. In addition, there are new research possibilities, especially for processing of semiconductors. Areas such as laser-assisted crystal regrowth and annealing of ion-implantation damage point toward new methods of generating semiconductor circuitry. This paper will review the physical phenomena which underlie laser processing applications. It will also give an overview of some of the leading uses for laser-based material processing.

Successful Treatment of Dark-colored Epidermal Nevus with Ruby Laser

Abstract: The pulsed ruby laser has a selective thermolytic effect. Recently, it has been available for the treatment of superficial pigmented disorders. We studied 5 cases of epidermal nevus treated with the pulsed ruby laser. In comparison with the usual methods including electrocautery, cryotherapy and skin abrasion, ruby laser therapy is an excellent tool due to technological ease and rapid improvement. Depigmentation after treatment in 2 cases was the only side effect of this therapy. Bose cases had a dark pigmentation of the skin. Despite of the risk of discoloration, the ruby laser is one of the most effective tools for therapy of pigmented epidermal nevus.

Generation of Giant Pulses from a Neo-dymium Laser by a Reversibly Bleachable Absorber

Abstract: THE generation of high-peak power pulses of short duration from a ruby laser by the incorporation of a reversible bleachable absorber into the optical cavity has recently been reported1. This communication reports the observation of giant pulses at 1.06µ from a neodymium glass laser using the polymethine dye 3,3′-diethyl-9,11; 15,17-dineopentylene-thia-pentacarbocyanine iodide2 as the bleachable absorber.

Time and frequency behavior of sound waves thermally induced by modulated laser pulses

Abstract: A temporally and spatially periodic light intensity distribution generates thermally in an absorbing sample a corresponding density variation which can be considered a standing sound wave. This thermal excitation of ultrasonic waves by modulated laser light has been investigated theoretically and experimentally. The sound waves were excited by two light beams of equal intensity derived from a mode‐locked ruby laser. The amplitude, velocity, and damping of the sound waves were examined by Debye Sears diffraction of argon laser pulses.