Topic
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.
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TL;DR: In this paper, a H2-Stokes Raman oscillator was constructed operating at 9755 A, and its performance was found to be as expected of laser oscillators, confirming earlier measurements.
Abstract: A H2‐Stokes Raman oscillator was constructed operating at 9755 A, and its performance was found to be as expected of laser oscillators. No beam instability was developed (beam trapping), confirming earlier measurements. A significant beam brightness enhancement (in terms of line width and beam divergence) over that of the Q‐switched ruby laser resulted.
13 citations
Abstract: It is found that when uncoated GaAs samples are irradiated with a Q-switched ruby laser, the samples suffer substantial weight losses for laser cnergy densities > 0·3 J/cm2. These weight losses are believed to result from the vaporization of the samples during the period in which the surfaces are in a molten state. The incomplete electrical activation of implanted ions in GaAs after laser annealing can be accounted for by the weight-loss phenomenon.
13 citations
TL;DR: In this paper, the threshold intensity for excitation of the stimulated Raman backscatter instability has been measured at 9.58 μm in a welldiagnosed plasma free of Brillouin scattering.
Abstract: The threshold intensity for excitation of the stimulated Raman backscatter instability has been measured at 9.58 μm in a well‐diagnosed plasma free of Brillouin scattering. The initial level of density fluctuations was independently measured by ruby laser scattering. The observed threshold of 1×1011 W/cm2 is somewhat below the calculated ‘‘absolute’’ threshold for underdense plasmas, and the apparent noise level is higher than that measured directly.
13 citations
13 citations
TL;DR: In this article, a rotating mirror camera and pulsed ruby laser have been combined to record laser speckle photographs at framing rates in the range of 10 5 to 10 6 frames/s.
Abstract: A rotating mirror camera and pulsed ruby laser have been combined to record laser speckle photographs at framing rates in the range of 10 5 to 10 6 frames/s. The laser is repetitively Q-switched by means of a Pockels cell, which is controlled by photodetectors inside the camera. This allows well-correlated , double-exposu re speckle photographs to be recorded on two separate runs of the camera. The photographs are analyzed by an automated image processing system to give whole-field displacement data with submicron accuracy. The illustrations show the dynamic displacement field in polymethyl methacrylate due to solid particle impact. The camera/laser system has potential applications for other stress analysis techniques, such as photoelasticity, the method of caustics, and moire interferometry.
13 citations