Volker Doormann
My work in physics |
Optics |
Calculation of Optical Isolators / single mode Lasers ligth modes CATIS - Constant Angle Transmission Interference Spectroscopy. Evaluation of dielectric tensor + thickness of thin semitransparent film from one transmission spectrum Coherent and incoherent optical Transmission through thin films on thick substrates Coherent Light modes in optical thin films Elastooptical modulation techniques Optical and Magnetooptical constants & complete dielectric tensor and thickness of thin film Volume holography |
X-ray |
HRXRD High Resolution X Ray Defraction: Epitaxial growth of films, single crystals, lattice constant XRD X Ray Defraction technique: Crystal phase determination & lattice constants X Ray relating crystal data calculations X Ray security group 3 systems |
FEM |
FEM Simulation of electron movement in Vacuum tubes (OPERA3D/SCALA) FEM Simulation of transient fluid/structure coupling of turbulent flow and elastic walls (ANSYS 7.0) FEM Simulation of transient heating in xray anodes. (ANSYS 7.0) |
Software |
Technology Process Control Software for e-beam sputtering of epitaxial films |
Materials |
Bi doped YIG (magn. optic) InSb (electron mobility) Garnets LiNbO 3 (optical data storage) MgO NdBaCuO 7 (superconductor) Pt (contact layer) PZT ((PbZr)TiO3 ) (capacitor) SrTiO3 Tb-Fe (magn. optic) W (anodes) YBaCuO7 (superconductor) YIG (magnetooptics/microvave filters) Ferroelectric materials Ferromagnetic materials |
Experimental |
Conductivity of metallic thin films (van der Pauw) Cryo/Vacuum technique Electron lithography by SEM Electron mobility in high conducting materials Electron Spin Waves / Magnon drag effec (YIG/InSb) Electronics High density optical data storage by volume holography HRXRD High Resolution X Ray Defraction technique: Epitaxial growth of films, single crystals, lattice HTC SQUID Characterizing FFT-Noise measurements Inertial navigation / gyro technique Micowave transport of Electron Spin waves in YIG Optical and Magnetooptical constants & complete dielectric tensor RF-technique X Ray Defraction XRD /HRXRD techniques: powder / epitaxially grown films Patents US0005122250A [] METHOD OF MANUFACTURING IRON GARNET LAYERS US0005058971A [] PLANAR OPTICAL ISOLATOR US0004778580A [] Method of manufacturing structured epitaxial layers on a substrate CA0001291634A [ ] METHOD OF MANUFACTURING AN OPTICAL STRIPLINE WAVEGUIDE FOR NON-RECIPROCAL ... EP0000383399A2 [DE] Planarer optischer Isolator. [EN] Planar optical insulator. [FR] ... EP0000352857A2 [DE] Verfahren zur Herstellung von Eisengranatschichten. [EN] Process ... EP0000252536A1[DE] Verfahren zur Herstellung eines optischen Streifenwellenleiters ... EP0000239140A2 [DE] Verfahren zur Herstellung von strukturierten epitaxialen Schichten ... EP0000146985A2 [DE] Verfahren zur Herstellung dünner einkristalliner ferrimagnetischer ... DE0004414843A1 [DE] Josephson-Stufenkontakt DE0003904660A1[DE] Planarer optischer Isolator DE0003825788A1[DE] Verfahren zur Herstellung von Eisengranatschichten DE0003704378A1[DE] Verfahren zur Herstellung eines optischen Streifenwellenleiters ... DE0003605793A1[DE] Verfahren zur Herstellung von strukturierten epitaxialen Schichten ... DE0003343768A1[DE] Verfahren zur Herstellung dünner einkristalliner ferrimagnetischer ...
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Publications AIP |
B. David, D. Grundler, S. Krey, V. Doormann, R. Eckart, J.P.Krumme, G.Rabe, and O. Dössel High-Tc SQUID magnetometers for biomagnetic measurements, Supercond. Sci. Technol. 9, A96-A99 (1996). J-P. Krumme, V. Doormann, F. Welz, O. Dössel et al. Ion-beam sputter deposition process for Y1Ba2Cu3O7 thin-film structures J. Mater. Res., Vol. 9, No. 11, 11. Nov 1994, p.2747 Abstract J-P. Krumme, V. Doormann, F.Welz, R. Eckard, O. Dössel et al. Epitaxial Y1Ba2Cu3O7 thin films with (103)/(110)- and (100)/(010)-orientation on NdGaO3 and SrTiO3 substrates grown by ion-beam sputter deposition J. Mater. Res., Vol 9, No 12, 1994 Abstract B. David, O. Dössel, V. Doormann, R. Eckart, R. Kobs, J. P. Krumme, F. Welz, M. Knechtel and D. Grundler, SQUIDs aus Hoch-Tc-Supraleitern. BMFT Abschlußbericht, Förderkennzeichen 13N5709 3. 1992. B. David, D. Grundler, R. Eckart, K. Fanghänel, J.-P. Krumme, V. Doormann and O. Dössel, A multilayer process for the fabrication of HTSC flux transformers and SQUIDs. Superconductor Science Technology, vol. 7, pp. 287-289. 1994. D. Grundler, B. David, R. Eckart, K. Fanghänel, V. Doormann, J.-P. Krumme, O. Dössel, J-P. Krumme, V. Doormann, P. Hansen, et al J-P. Krumme, V. Doormann, H. Meyer, W. Radke, B. Strocka J-P. Krumme, V. Doormann, B. Strocka, K. Witter et al. J-P. Krumme, V. Doormann, B. Strocka, and P.Willich J-P. Krumme, V. Doormann, and P.Willich V.
Doormann, J.-P. Krumme, C.-P. Klages et al. J-P. Krumme, V. Doormann, R. Eckart J-P. Krumme, V. Doormann, and C.-P. Klages E. Krätzig, F. Welz, R. Orlowski, V. Doormann,
and M. Rosenkranz E. Krätzig, R. Orlowski, V. Doormann, and M. Rosenkranz H. Kurz, V. Doormann an R. Kobs |
Pictures
Testing Litton Inertial navigation LN3 computer for the Bundeswehr F104 Starfighter (1963)
Litton Inertial navigation LN3 platform for the Bundeswehr F104 Starfighter (1963)
F104 Starfighter
Litton Inertial navigation computer test crew for the F104 Starfighter (1963)
In the years 1968 -1970 I take part on the development of the inertial gyro compass PL41 (left) of high accuracy for marine boats
.
Computertest PL41
A final
test in 1970 around Helgoland on a speedboat of the German Bundeswehr has shown a breakthrough in accuracy of gyro compass technology.
Compass PL41 testing in the North Sea around Helgoland in April 1970.
The speedboat was running manoevres at 30+ knots 4
times 84 minutes North-South 'Schuler' periods.
It was great success of team work.
Bundeswehr speedboats (1970)
It was done
The compass PL41 is still - after 39 years - in production and in use - p.e. in in boats from Israel .
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My Lab in 1970 measuring spin waves in YIG (Yttrium iron garnet) single crystals.
Holographic data storage in LiNb03 (1976)
Multiple holographic picture storage (Movie) in LiNb03 (1977)
(1977)
With colleagues
In a 1mm thick LiNb03 single cristal of 5mm edge lenght 109 bits/cm3 of data or 100 pictures can be stored out of focus (1978).
In March of 2011 it was said that the capacity of ferroelectrica could be several billion (1012) data points per square inch ( ~ several 1011bit/cm³ ) |
Volume holography very high density picture storage in LiNb03 about ~1012 bit cm-3 (1979)
Three volume-holograms written (from a slide) und reconstructed with the upper setup using two wavelengths from an
Argon Laser (blue und green) and one wavelenght from a Krypton Laser (red) in a LiNbO3 cristal (Size of 3 X 4 X 5 mm). (1979)
The crystal (right) was coated with a layer, to increase the total transmission power.
Magneto-optic domain pattern from a single cristal sputtered with selected area epitaxy.
Magnetron sputtered Bi-Iron-Garnet film (0.005 mm) pixel size length 0.15 mm.
Domains show pattern of threefold garnet single crystal structure growth direction [111] using polarized light.
Picture was taken with a Zeiss AXIOMAT
(1984)
PC controled e-beam sputter chamber for high temperature SQUID's
Supraconducting QUantum Interference Divice (1989)
Crystal structure of YBaCuO7 Superconductor (1995)
FEM Simulation of heat transfer into a fluid 2002
Work
room for 10 years
FEM Simulation of heat transfer into a fluid 2002
FEM Simulation of thin window
Liquid-metal anode x-ray tube
With thank to all colleagues in the field