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.
Papers published on a yearly basis
Papers
More filters
••
TL;DR: In this paper, sub-nanosecond pulses, having rise and fall times not exceeding 300 psec, have been selected from the output of a single mode ruby laser, with a width of ≈ 700 psec.
16 citations
••
TL;DR: In this article, a transient interference experiment has been performed using the radiation from a normally spiking, pulsed ruby-laser oscillator, where the laser output at time t is made to interfere with emission corresponding to an earlier time, t −τ, by means of an optical delay inserted into a twopinhole Young's interferometer.
Abstract: A transient interference experiment has been performed using the radiation from a normally spiking, pulsed ruby‐laser oscillator. In the experiment the laser output at time t is made to interfere with emission corresponding to an earlier time, t‐τ, by means of an optical delay inserted into a two‐pinhole Young's interferometer. A light‐pipe photomultiplier oscilloscope system permits photographic recording of the interference fringes during a single spike of the laser emission, with a time resolution of less than 15 nsec. From the data obtained both the fringe visibility and the relative pattern phase of the interference pattern may be evaluated. Data are presented for both visibility and pattern phase for several delay times. The principal observation is that during a single laser spike the frequency increases with time. An analysis of the experiment and of possible causes for frequency variation of the laser with time results in the hypothesis that there is lattice strain in the ruby associated with the...
16 citations
••
TL;DR: In this article, it was shown that undamped spikes in the output of multimode pulsed lasers were due to an inhomogeneous depletion of the inverted population in the bulk of an active rod.
Abstract: The results of an experimental investigation were combined with the published work to show that undamped spikes in the output of multimode pulsed lasers were due to an inhomogeneous depletion of the inverted population in the bulk of an active rod. A quasicontinuous output was obtained from a ruby laser with plane mirrors. It was found that the mechanical and thermal distortions of the resonator, which could suppress the laser action, were essentially misalignments. A new feature of the stimulated emission, called inertia, was observed for a ruby laser with spherical mirrors when the spatial inhomogeneities of the population inversion were smoothed out.
16 citations
••
TL;DR: In this paper, a new technique for Q-spoiling was proposed, where an easily vaporized absorbing film located within the resonant structure of a ruby laser is destroyed by initial stimulated emission, and the resulting laser output is characterized by a single giant pulse of micro-second duration.
Abstract: Q‐spoiling is observed when an easily vaporized absorbing film located within the resonant structure of a ruby laser is destroyed by initial stimulated emission. Two features of this new technique are operational simplicity and no severe power handling limitations. The resulting laser output is characterized by a single giant pulse of micro‐second duration whose rise time (in the 20‐ to 40‐nsec range) is at least as fast as reported for Q‐spoiling by Kerr‐cell shutters.
16 citations