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 article, a sintered bulk pellet was used as the vaporization source for BaTiO3 and Ni x Fe3−x O4 and the dependence of the film properties on oxygen partial pressure and laser energy density during deposition has been investigated.
Abstract: Thin films of BaTiO3 and Ni x Fe3−x O4 have been obtained by pulsed ruby laser evaporation process. In the case of BaTiO3 a sintered bulk pellet was used as the vaporization source, while Fe50Ni50 metallic alloy was used as the source for synthesis of nickel ferrite. The dependence of the film properties on oxygen partial pressure and laser energy density during deposition has been investigated. It is shown that thin films of these materials having good structural, morphological and stoichiometric properties can be obtained by the laser process by appropriate control of process parameters.
19 citations
TL;DR: In this article, a pulsed ruby laser was used to measure the variation of the surface reflectivity during laser irradiation and the melting depth was measured after repetitive irradiations in order to induce diffusion of dopants to the maximum melt depth.
Abstract: Using a pulsed ruby laser (λ=0.69 μm, FWHM=20ns) we have measured the variation of the surface reflectivity during laser irradiation. The melting depth has been measured after repetitive irradiations in order to induce diffusion of dopants to the maximum melt depth. Agreement with thermal model is found. Experimental measurements of time-resolved reflectivity on 1000 Aa-Si onc-Si are explained with the thermal model introducing a low thermal conductivity of 0.002 cal/(cm · s · K) in amorphous silicon.
19 citations
TL;DR: In this paper, the propagation of thermally generated stress waves in a dispersive elastic rod was investigated both experimentally and analytically both in terms of the number of stress waves and their propagation speed.
Abstract: The propagation of thermally generated stress waves in a dispersive elastic rod was investigated both experimentally and analytically.
19 citations
TL;DR: In this paper, the annealing behavior in Si ion-implanted GaAs, using a Qswitch-pulsed ruby laser, is characterized by a strong dose dependence of implanted impurity concentration thus electrically activated; carriers are generated or not, according as the dose ranges ≳ or ≲1014 cm−2.
Abstract: The annealing behaviors in Si ion‐implanted GaAs, using a Q‐switch‐pulsed ruby laser, are characterized by a strong dose dependence of implanted‐impurity concentration thus electrically activated; carriers are generated or not, according as the dose ranges ≳ or ≲1014 cm−2. To characterize this impressive phenomenon, four factors are presented, which seem possible as its origin: (1) Cr segregation, (2) laser irradiation defects, (3) insufficient laser energy absorption, (4) residual implantation damage. A detailed study denies factors (1)–(3) to be its origin. Factor (4) is decisive; implantation damage remains after laser annealing, as the damage‐related localized states whose typical density is roughly estimated to be ∼1018 cm−3 or somewhat less. This result gives a satisfactory explanation for the above phenomenon. The fact that implantation damage remains is, however, suggestive of an annealing mechanism differing from the normal melting.
19 citations
TL;DR: In this paper, it was shown that a laser emission of a train of short pulses of duration δt separated by Δt = 2l/C or Δt' = l/C, due to self mode locking, corresponds to a localization of the electromagnetic energy in one or several wave-packets which bounce between the mirrors.
19 citations