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.

Lasers in periodontics.

Abstract: Clinical lasers are of two types. Soft lasers are essentially an aid to healing, with relatively few rigorous studies available to support their use. Surgical hard lasers, however, can cut both hard and soft tissues, replacing the scalpel and drill in many areas. After initial experiments with the ruby laser, most clinicians have been using argon, carbon dioxide, and now Nd:YAG systems. The first dental laser based on a Nd:YAG engine provides handpieces of similar size to conventional instrumentation, and being fed by a fibre-optic "cable," has the flexibility for intra-oral use that the carbon dioxide lasers, widely used in oral surgery, lack. Furthermore, extensive clinical investigation has demonstrated their safety in clinical practice, and the fact that procedures can usually be performed without a local anaesthetic is obviously seen as an advantage by patients. Sterilizing as it cuts, the Nd:YAG laser promises to find uses not only in caries removal and soft tissue surgery but also in periodontics and endodontics.

Time‐resolved x‐ray diffraction measurement of the temperature and temperature gradients in silicon during pulsed laser annealing

Abstract: Nanosecond resolution time‐resolved x‐ray diffraction measurements have been used to study the temperature and temperature gradients in 〈100〉 and 〈111〉 oriented silicon crsytals during pulsed laser annealing. Thermal strain analysis of time‐resolved extended Bragg scattering has shown the lattice temperature to reach the melting point during 15‐ns, 1.5‐J/cm2 ruby laser pulses and to remain at the melting point during the high reflectivity phase (HRP). The temperature gradients at the liquid‐solid interface were found to be in the range of ∼107 K/cm during the HRP.

The birth and development of laser heating in diamond anvil cells

Abstract: In 1968 Taro Takahashi and I observed a phase transition that resulted from laser heating under pressure in a diamond anvil cell. Using a ruby laser, we successfully converted graphite to diamond. We soon realized that the ruby laser had such limited capabilities that we acquired a yttrium–aluminum–garnet (YAG) laser that could be used in both continuous and pulsed modes. The road to successfully applying the technique was not without a few bumps. Thirty years later, these seem more amusing than they did at the time. It was with the YAG laser that Ming and Liu investigated a number of silicate phase transitions important to our understanding of the earth’s mantle. Since then it has been gratifying to watch as others have adopted the technique and made many important contributions with it.

Thomson Scattering of Optical Radiation from an Electron Beam

Abstract: Light from a ruby laser was focused to intersect an electron beam at right angles, and the scattered radiation was observed at an angle THETA = 65 deg with respect to this beam. Intensity of the radiation was 10/sup -18/ of the laser output; detected by a photomultiplier after it passed through an iris and a system of filters. (C.E.S.)