Abstract:
A high efficiency wavelength up-conversion transparent glass ceramics composition is provided containing a rare earth ion, which can be applied to short wavelength solid lasers, full color displays, infrared light detecting sensors, etc. The ceramic composition has the following chemical composition, in which fluoride fine crystals containing rare earth ions are preferentially precipitated:______________________________________ SiO.sub.2 10-60 mol % AlO.sub.1.5 0-40 mol % GaO.sub.1.5 0-40 mol % PbF.sub.2 5-60 mol % CdF.sub.2 0-60 mol % GeO.sub.2 0-30 mol % TiO.sub.2 0-10 mol % ZrO.sub.2 0-10 mol % ReF.sub.3 or ReO.sub.1.5 0.05-30 mol % (Re = Er, Tm, Ho, Yb, Pr, etc.). ______________________________________
Abstract:
The effective rate of deactivation from the terminal state to the ground state of a rare earth ion doped optical material in a four-level amplifying or lasing scheme may be increased greatly by doping the optical material with two rare earth ions, an activator and a deactivator. Energy transfer occurs between the terminal state in the activator ion and the deactivator ion. The transition from the deactivator to the ground state occurs via phonon emission. By increasing the deactivation rate, the efficiency of the laser and the amplifier is increased.
Abstract:
The present invention relates to an optical functioning glass containing Nd.sup.+3 as an active ion which amplifies an input light, and at least one other optical active ion different from Nd.sup.+3 which absorbs light at and near 1 .mu.m. The present invention also relates to an optical functioning glass containing Nd.sup.+3 as an active ion which amplifies the input light, and at least one other optical active ion different from Nd.sup.+3 functioning as a promoter. An efficiency of the stimulated emission of Nd.sup.3+ caused by signal light propagated through the optical functioning glass is enhanced and a gain of the light amplification at 1.3 .mu.m is increased.
Abstract:
A composite slab laser medium provided with a non-doped layer containing substantially no laser active materials and a first and second doped layers provided at both sides of the non-doped layer, respectively, in such a manner to hold the non-doped layer, each of which contains a laser active material. In this composite slab laser, a first surface of the first doped layer and a second surface of the second doped layer are in contact with the outside of the composite slab laser medium and are parallel with each other. Further, a laser oscillation or an optical amplification is performed by extracting a laser beam which travels in a zig-zag path undergoing total internal reflection at the first and second surfaces employed as alternate reflecting surfaces within the composite slab laser medium. Moreover, layers made of laser glass containing Nd.sub.2 O.sub.3 of from 3 to 9% by weight is employed as the doped layers. Furthermore, a total of the thicknesses of the first and second doped layers is of from 0.6 to 8.0 mm. Additionally, the ratio of the total of the thicknesses of the first and second doped layers to the thickness of the whole composite slab laser medium is of from 0.075 to 0.40. Thereby, a composite slab laser medium, the gain of which is well balanced with the cross section of a laser beam, can be realized. Further, a laser provided with such a laser medium and a pump source for optical pumping of the laser medium can be provided. Thereby, a laser capable of emitting a laser beam with a high-beam-quality and high-peak-power can be realized.
Abstract:
Disclosed is halide laser glass which comprises cationic components and anionic components. The cationic components are constituted by: Al ions; Zr ions and/or Hf ions; at least one kind of ions selected from the first group consisting of Ca ions, Sr ions and Ba ions; at least one kind of ions selected from the second group consisting of Mg ions, Y ions and alkali metal ions; and Er ions, the cationic components being present within the ranges: Al ions in a range of from 20 to 45 mol %, Zr ions and/or Hf ions in a range of from 0.5 to 25 mol %, Ca ions in a range of from 0 to 42 mol %, Sr ions in a range of from 0 to 25 mol %, Ba ions in a range of from 0 to 25 mol % in a total amount of the first group cations within the range of 20 to 70 mol %, Mg ions in a range of from 0 to 15 mol %, Y ions in a range of from 0 to 20 mol %, alkali metal ions in a range of from 0 to 20 mol % in a total amount of the second group cations within the range of 2 to 50 mol %, and Er ions in a range of from 6 to 25 mol %, while the anionic components are constituted by F ions or F ions and Cl ions, the anionic components being present within the ranges: F ions in a range of from 90 to 100 mol %, and Cl ions in a range of from 0 to 10 mol %. The cationic components may further contain Ho ions in a range of from 0.1 to 5 mol %. Further disclosed is a laser device having, as a laser medium, the halide laser glass as described above.
Abstract:
A laser has been made using a Nd.sup.3+ -doped fluoro-zirconate heavy metal fluoride (HMF) glass multimode fiber which lases in a range equal to or greater than 1.32 micrometers. The fiber laser was made for forming a glass fiber from a core glass composition comprising 52.8 mole % ZrF.sub.4, 19.9 mole % BaF.sub.2, 2.5 mole % LaF.sub.3, 3.0 mole % AlF.sub.3, 19.9 mole % NaF, 0.4 mole % InF.sub.3, and 1.5 mole % NdF.sub.3 the active dopant and the composition of the cladding glass comprises 39.6 mole % ZrF.sub.4, 17.9 mole % BaF.sub.2, 4.0 mole % LaF.sub.3, 3.0 mole % AlF.sub.3, 21.9 mole % NaF, 0.4 mole % InF.sub.3, and 13.2 mole % HfF.sub.4.
Abstract:
A glass for edge-cladding a disc laser glass, comprising, in mol%, followed in parentheses by wt % value,______________________________________ P.sub.2 O.sub.5 46- 63, (64-76) Al.sub.2 O.sub.3 4- 8, (3.5-7.5) B.sub.2 O.sub.3 0- 5, (0-3.0) K.sub.2 O 2- 20, (2.5-16.5) Na.sub.2 O 0- 15, (0-8.5) Li.sub.2 O 0- 14, (0-3.5) K.sub.2 O + Na.sub.2 O + Li.sub.2 O 18- 30, (11.5-20.5) CuO 2- 20, (1.4-13.5) ZnO 0- 15, (0-11.5) MgO 0- 5, (0-2.0) and CuO + ZnO + MgO 7- 20. (4.7-13.5). ______________________________________
Abstract translation:用于边缘包覆圆盘激光玻璃的玻璃,包括以摩尔%计的括号中的重量%,P 2 O 5 46-63,(64-76)Al 2 O 3 4-8,(3.5-7.5)B 2 O 3 0-5, (0-3.0)K2O 2-20,(2.5-16.5)Na 2 O 0-15,(0-8.5)Li 2 O 0-14,(0-3.5)K 2 O + Na 2 O + Li 2 O 18-30,(11.5-20.5)CuO 2-20,(1.4-13.5)ZnO 0-15,(0-11.5)MgO 0-5,(0-2.0)和CuO + ZnO + MgO 7-20(4.7-13.5)。
Abstract:
Glass laser rods are treated and strengthened by a method which produces aardened surface that protects the laser rods from physical abrasion, prevents failure due to thermal shock, and removes flaws while not interfering with light pumping through the sides of the treated rods. The method includes subjecting the prepared glass laser rods to an acid polishing procedure which employs an acid polishing solution comprised of equal parts of concentrated hydrofluoric and concentrated nitric acid.
Abstract:
Glass for laser use, comprising the oxides of the following elements having the following mol percentage composition:______________________________________ phosphorus pentoxide 35-49; oxides of one or more alkali metals 1-30; oxides of one or more metals of group II 20-45; oxides of one or more rare-earth elements 0.1-25; oxides of one or more of B, Al, Nb, Pb 0-27; ______________________________________ Wherein the ratio of the sum total of the oxides of mono-, bi- and trivalent metals to the phosphorus pentoxide exceeds unity.
Abstract:
Laser glass compositions are disclosed that provide laser articles with increased efficiency, the compositions comprising TeO2, La2O3 and ZnO in certain molar amounts, as defined by certain areas set forth in a ternary diagram of the FIGURE, the laser glass compositions also including an effective lasing amount of Nd2O3. Also disclosed are methods of making highly efficient glass laer articles, such as rods, discs and the like, the methods including the steps of: 1. MELTING LASER GLASS BATCH-FORMING MATERIALS TO PROVIDE MOLTEN GLASS COMPRISING CERTAIN MOLAR AMOUNTS OF TeO2, La2O3 and ZnO, the molten glass capable of being a host for an effective lasing amount of Nd2O3; 2. forming a glass laser blank from the molten glass; and 3. FABRICATING A LASER ARTICLE FROM THE GLASS BLANK, THE ARTICLE HAVING INCREASED LASING EFFICIENCY. Also disclosed is the new use of a TeO2/La2O3/ZnO glass host composition as a glass laser article in which the proportions of TeO2, La2O3 and ZnO are present in certain molar amounts as above-described, and in which the glass composition is a host for an effective lasing amount of Nd2O3, the new use including the steps of: 1. FORMING A LASER ARTICLE FROM THE GLASS COMPOSITION ABOVEDESCRIBED; 2. PUMPING THE LASER ARTICLE TO CAUSE AN ENERGY INVERSION; AND 3. PASSING MONOCHROMATIC LIGHT THROUGH THE ARTICLE TO CAUSE STIMULATED EMISSION AT A WAVELENGTH OF ABOUT 1.06 MICRONS.
Abstract translation:公开了激光玻璃组合物,其提供具有提高效率的激光制品,组合物包含一定摩尔量的TeO 2,La 2 O 3和ZnO,如图所示的三元图所示的某些区域,激光玻璃组合物还包括有效的激光 量的Nd2O3。 还公开了制备高效玻璃制品如棒,盘等的方法,所述方法包括以下步骤: