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, the dynamics of modification of the surface structure in p-CdTe (111) crystals subjected to nanosecond ruby laser pulses with a lasing wavelength within the fundamental absorption region (ℏω=1.78 eV) is studied.
Abstract: The dynamics of modification of the surface structure in p-CdTe (111) crystals subjected to nanosecond ruby laser pulses with a lasing wavelength within the fundamental-absorption region (ℏω=1.78 eV) is studied. It is shown that, depending on the radiation dose, the surface morphology changes in the following order: the formation of tellurium film, an increase in the density of dislocations under the tellurium film, and the formation of ordered quasi-periodic structures of both micrometer and nanometer size. The size of the structures and the character of their distribution are shown to be dose-dependent.
14 citations
TL;DR: In this paper, a design of an optical filter using Photonic Band Gap (PBG) materials in the visible and infrared region of the electromagnetic spectrum is presented, based on the famous Kronig-Penny model in the band theory of solids.
14 citations
TL;DR: Theoretical work by Basov and Krokhin this article suggests that very hot plasmas (∼107 °K) can ultimately be produced in this way, and further experiments have been carried out using a larger Q-switched neodymium glass laser, and an estimate of the electron temperature attained in a carbon plasma is reported in this communication.
Abstract: WHEN a high-power laser beam is focused on to a material target, a small inertially confined plasma is generated near the target surface. Theoretical work by Basov and Krokhin1,2, verified by Dawson3, suggests that very hot plasmas (∼107 °K) can ultimately be produced in this way. A spectroscopic investigation of plasmas generated by a small Q-switched ruby laser has already been reported4. Further experiments have now been carried out using a larger Q-switched neodymium glass laser, and an estimate of the electron temperature attained in a carbon plasma is reported in this communication. Other results will be described in detail elsewhere.
14 citations
TL;DR: The art of masers and lasers is founded on Einstein's discovery of stimulated emission as discussed by the authors, which led to a search for methods for establishing population inversion in a suitable material and hence to the construction of a radiation amplifier.
Abstract: The art of masers and lasers is founded on Einstein's discovery of stimulated emission. This discovery led to a search for methods for establishing population inversion in a suitable material and hence to the construction of a radiation amplifier. In 1954 Townes and his students constructed the first microwave amplifier and oscillator based on the stimulated emission principle. Three-level solid masers followed quickly and speculations began on extending the art into the optical region. The first ruby laser was built in 1960 by Maiman. It was quickly followed by the four-level lasers of Sorokin and Stevenson and the He-Ne laser of Javan. Large scale search for additional laser materials and more effective laser techniques began in 1961. This fascinating and frantic effort is still in progress. Its highlights are briefly described.
14 citations
14 citations