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 LiNbO3 (optical data strage) MgO NdBaCuO7 (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 ... EP0000680102A1[DE] Josephson-Stufenkontakt. [EN] Ramp type Josephson junction. [FR] ... 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 ...

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,  Fabrication and Performance of Highly Sensitive YBa2Cu3O7 dc SQUID Magnetometer with Thin-Film Flux Transformer European Conference on Applied Superconductivity (EUCAS), Göttingen, Germany 1993 1303-1306.   V. Doormann, J.-P. Krumme, and H. Lenz  Optical and magneto-optical tensor spectra of bismuth-substituted yttrium-iron-garnet films  J. Appl. Phys. 68 (7) 1. October 1990, p 3544 .pdf J-P. Krumme, V. Doormann, P. Hansen,  et al  Optical recording aspects of rf magnetron-sputtered iron-garnet films J. Appl. Phys. 66 (9). 1. November 1989, p.4393 .pdf J-P. Krumme, V. Doormann, H. Meyer, W. Radke, B. Strocka  Sputter epitaxy of iron-garnet waveguides  SPIE Vol. 1018 Electro-Optic and MagnetoOptic Materials 1988  p. 109  J-P. Krumme, V. Doormann, B. Strocka, K. Witter  et al. Magnetoelastic and optoelastic coupling in (111)- and (110)-oriented bismuth-iron garnet films prepared by sputter epitaxy  J. Appl. Phys. 62 (9) 1. Nov. 1987, p. 3879  J-P. Krumme, V. Doormann, B. Strocka, and P.Willich  Selected-area sputter epitaxy of iron-garnet films  J. Appl. Phys. 60 (6) 15. September 1986 p. 2065  J-P. Krumme, V. Doormann, and P.Willich Bismuth iron garnet films prepared by rf magnetron sputtering  J. Appl. Phys. 57 (1) 15. April 1985  p. 3885  V. Doormann, J.-P. Krumme, C.-P. Klages et al.  Measurement of the Refractive Index and Optical Absorption Spectra of Ebitaxial Bismuth Substituted Yttrium Iron Garnet Film at uv to near-ir Wavelengths  Appl. Phys. A 34, 223-230 (1984) Abstract J-P. Krumme, V. Doormann, R. Eckart  Bismuth-substituted iron garnet films prepared by RF diode sputtering  IEEE Transactions on Magnetics, Vol. Mag-20, No 5, September 1984  J-P. Krumme, V. Doormann, and C.-P. Klages  Measurement of the magnetic properties of bismuth-substituted iron garnet films using piezobirefringent modulation  Applied Optics / Vol 23, No 8 / 15. April 1984 p. 1184  E. Krätzig, F. Welz, R. Orlowski, V. Doormann, and M. Rosenkranz  Holographic storage properties of BaTiO3  Solid State Communications, Vol. 34, 1980, pp.817-819  E. Krätzig, R. Orlowski, V. Doormann, and M. Rosenkranz  Optical information storage in LiTaO3:Fe-Crystals  SPIE Vol. 164 (Sira, Oct. 1978), p.33    H. Kurz, V. Doormann an R. Kobs Photorefraktive Recording of Volume Holograms in doped LiTaO3  Applications of Holography and Optical Data Processing, Pergamon Press ,1977