Publications

A Highly Linear Frequency Ramp Generator based on a Fractional Divider Phase-Locked-Loop

1999 - Thomas Musch, Ilona Rolfes, Burkhard Schiek †

IEEE Transactions on Instrumentation and Measurement, Vol. 48, No. 2, pp. 634-637, April 1999 [IEEE Library]

Gain and emission dynamics of semiconductor lasers

1999 - Martin R. Hofmann

Recent Res. Devel. Applied Phys. 2, 269

Ultrafast physics in Nitrides

1999 - Martin R. Hofmann , R. Zimmermann, M. Oestreich, W.W. Rühle

Materials Science & Engineering B 59, 141

A Gaussian approach to the calculation of the accuracy of stereotactic frame systems

1999 - Zylka, W., Sabczynski, J., Georg Schmitz

Medical Physics, 1999, 26, 381-391

Tissue characterization of the prostate using radio frequency ultrasonic signals

1999 - Georg Schmitz, Senge, T., Helmut Ermert

IEEE Trans. Ultrason. Ferroel. Freq. Control, 1999, 46, 126-138

Ultraschall-Artefakte

1999 - Georg Schmitz

Ultraschall und Magnetische Resonanz, Deutsche Gesellschaft für Medizinische Physik, 1999

Ultraschall-Biomikroskopie

1999 - Georg Schmitz

Ultraschall und Magnetische Resonanz, Deutsche Gesellschaft für Medizinische Physik, 1999

Ultraschallspektroskopie

1999 - Georg Schmitz

Ultraschall und Magnetische Resonanz, Deutsche Gesellschaft für Medizinische Physik, 1999

Coin-based anonymous fingerprinting

1999 - Ahmad-Reza Sadeghi, Birgit Pfitzmann

In Jacques Stern, editor, Advances in Cryptology – EUROCRYPT ’99, volume 1599 of Lecture Notes in Computer Science, pages 1599 of Lecture Notes in Computer Science, pages 150-164: International Association for Cryptologic Research, Springer-Verlag, Berlin Germany, 1999.

Kombinierte Erfassung von axialem und transversalem Blutfluß mit einem 50 MHz-Ultraschall-B-Bild-System für die Dermatologie

1999 - Michael Vogt, Cristobal Curio, Helmut Ermert, Stephan el Gammal, Katharina Kaspar, Klaus Hoffmann, Markus Stücker, Peter Altmeyer

Zeitschrift für Medizinische Physik, Nr. 1, S. 30-36, 1999

100 MHz sonography of psoriasis vulgaris plaques

1998 - Stephan el Gammal, Carsten Piek, Thorsten Auer, Katharina Kaspar, Klaus Hoffmann, Peter Altmeyer, Michael Vogt, Helmut Ermert

Ultraschall in der Medizin, Vol. 19, No. 6, Dec. 1998, pp. 270-274

GaAs-based VCSEL-structures with strain-compensated (GaIn)As/Ga(PAs)-MQWH active regions grown by using TBAs and TBP

1998 - C. Ellmers, S. Leu, R. Rettig, Martin R. Hofmann , W.W. Rühle, W. Stolz

J. Crystal Growth 195, 630

Sensorgesteuerte Herzschrittmacher-Systeme

1998 - Werner, J., Martin Hexamer, Hoeland, K., Meine, M.

at (Automatisierungstechnik), vol. 46, pp. 516-523, 1998.

Pump geometry for resonant and quasi- resonant optical excitation of microcavity lasers

1998 - Martin R. Hofmann , F. Jahnke, C. Ellmers, M. Oestreich, H.C. Schneider, F. Jahnke, S.W. Koch, W.W. Rühle, M. Hilpert, H. Klann, H.D. Wolf, D. Bernklau, H. Riechert

Opt. Lett. 23, 849

Gain dynamics of semiconductor lasers

1998 - Martin R. Hofmann

Proc. SPIE 3283, 109 (1998) Physics and Simulation of Optoelectronic Devices VI

Measurement and calculation of gain spectra for (GaIn)As/(AlGaAs) single quantum well lasers

1998 - C. Ellmers, Martin R. Hofmann , W.W. Rühle, A. Girndt, F. Jahnke, A. Knorr, S.W. Koch, C. Hanke, L. Korte, C. Hoyler

Appl. Phys. Lett. 72, 1647

Gain spectra of an (InGa)As single quantum well laser diode

1998 - C. Ellmers, Martin R. Hofmann , W.W. Rühle, A. Girndt, F. Jahnke, W.W. Chow, A. Knorr, S.W. Koch, C. Hanke, L. Korte, C. Hoyler

phys. stat. sol. (b) 206, 407

Efficient Multiplier Architectures for Galois Fields GF((2^n)^4)

1998 - Chris­tof Paar, P. Fleischmann, P. Roelse

IEEE Transactions on Computers, vol. 47, no. 2, pp. 162-170, February 1998. [ps]

Progress in the European Applications in Surgical Interventions (EASI) Project

1998 - Georg Schmitz, Breeuwer, M., de Bliek, H., Desmedt, P., Gieles, P., Gerritsen, F., Wadley, J., Dorward, N., Velani, B., Kitchen, N., Thomas, D., Wink, O., Blankensteijn, J., Eikelboom, B., Mali, W., Viergever, M., Penney, G., Gaston, R., Hill, D., Hawkes, D., Weese, J., Sabczynski, J., Zylka, W., Lorenz, C., Buzug, T., Kuhn, M. H.

The EASI project-improving the effectiveness and quality of image-guided surgery

1998 - Georg Schmitz, Breeuwer, M., de Bliek, H., Desmedt, P., Gieles, P., Gerritsen, F., Buurman, J., Dorward, N., Kitchen, N. D., Velani, B., Thomas, D. G. T., Wink, O., Blankensteijn, J., Eikelboom, B., Mali, W., Viergever, M., Penney, G., Gaston, R., Hill, D., Hawkes, D., Maurer, C. R., Maes, F., Vandermeulen, D., Verbeeck, R., Suetens, P., Buzug, T. M., Lorenz, C., Sabczynski, J., Weese, J., Zylka, W., Kuhn, M. H.

IEEE Transactions on Information Technology in Biomedicine

Transient four-wave-mixing spectroscopy on Gallium Nitride: Energy splittings of intrinsic excitonic resonances

1997 - R. Zimmermann, A. Euteneuer, J. Möbius, D. Weber, Martin R. Hofmann , W.W. Rühle, E.O. Göbel, B.K. Meyer, H. Amano, I. Akasaki

Phys. Rev. B 56, R12722

Biexcitonic binding energies in the transition from three- to two-dimensional semiconductors

1997 - A. Euteneuer, J. Möbius, R. Rettig, Martin R. Hofmann , E. Mayer, W. Stolz, E.O. Göbel, W.W. Rühle

Phys. Rev. B 56, R10028

Confinement dependence of biexcitonic binding energies in semiconductor quantum wells

1997 - A. Euteneuer, J. Möbius, R. Rettig, Martin R. Hofmann , E. Mayer, W. Stolz, E.O. Göbel, W.W. Rühle

phys. stat. sol. (a) 164, 253

Transient four wave mixing experiments on GaN

1997 - R. Zimmermann, A. Euteneuer, J. Möbius, D. Weber, Martin R. Hofmann , W.W. Rühle, E.O. Göbel, B.K. Meyer, H. Amano, I. Akasaki

MRS Internet Journal of Nitride Research 2, 24

Quantum beat spectroscopy on excitons in GaN

1997 - R. Zimmermann, A. Euteneuer, J. Möbius, D. Weber, Martin R. Hofmann , W.W. Rühle, E.O. Göbel, B.K. Meyer, H. Amano, I. Akasaki

Materials Science; Engineering B. 50, 205

Control of liquid cooling garments: technical control of mean skin temperature and its adjustments to exercise

1997 - Martin Hexamer, Werner, J.

Appl Human Sci, vol. 16, pp. 237-247, 1997.

Application of high frequency broadband ultrasound for high resolution blood flow measurement

1997 - Michael Vogt, Helmut Ermert

Proceedings: IEEE 1997 Ultrasonics Symposium, pp. 1243-1246, Oct. 5-8, 1997, Toronto, Canada

Influence of carrier relaxation on the dynamics of stimulated emission in microcavity lasers

1997 - M. Hilpert, Martin R. Hofmann , C. Ellmers, M. Oestreich, H.C. Schneider, F. Jahnke, S.W. Koch, W.W. Rühle, H.D. Wolf, D. Bernklau, H. Riechert

Appl. Phys. Lett. 71, 3761

Influence of carrier cooling on the emission dynamics of semiconductor microcavity lasers

1997 - M. Hilpert, Martin R. Hofmann , C. Ellmers, M. Oestreich, H.C. Schneider, F. Jahnke, S.W. Koch, W.W. Rühle, H.D. Wolf, D. Bernklau, H. Riechert

phys. stat. sol. (b) 204, 548

Monolithic colliding pulse mode-locked semiconductor lasers

1997 - S. Bischoff, J. Mørk, T. Franck, S.D. Brorson, Martin R. Hofmann , K. Fröjdh, L. Prip, M.P. Sørensen

Journal of Quantum Semiclass. Opt. 9, 655 (1997) - invited

Spectrally and temporally resolved gain dynamics in mode locked semiconductor quantum well lasers

1997 - P. Miltenyi, M. Koch, Martin R. Hofmann , H. Jung, W. Elsäßer

Appl. Phys. Lett. 70, 1506

Chirp of monolithic colliding pulse mode-locked diode lasers

1997 - Martin R. Hofmann , S. Bischoff, T. Franck, L. Prip, S.D. Brorson, J. Mørk, K. Fröjdh

Appl. Phys. Lett. 70, 2514

Temporal and spectral dynamics in Multiquantum well semiconductor saturable absorbers

1997 - Martin R. Hofmann , K. Fröjdh, S. D. Brorson, J. Mørk

IEEE Photon. Technol. Lett. 9, 622

Subpicosecond heterodyne four-wave mixing experiments on InGaAsP semiconductor laser amplifiers

1997 - Martin R. Hofmann , S.D. Brorson, J. Mørk, P. Skovgaard, J. McInerney, A. Mecozzi

Opt. Commun. 139, 117

Calculation of the Application Accuracy of Various Stereotactic Frame Systems

1997 - Zylka, W., Sabczynski, J., Georg Schmitz

Elsevier, 1997, 866-871

Registration by Palpation for Image Guided Surgery of the Head

1997 - Georg Schmitz, Weese, J., Zylka, W., Sabczynski, J.

Elsevier, 1997, 305-310

The Geometrical Accuracy of Volumetric CT Images

1997 - Zylka, W., Sabczynski, J., Georg Schmitz

Integration of a Neuro-Endoscope into an Image-Guided Surgery System

1997 - Georg Schmitz, Buurman, J., Gerritsen, F. A., Dorward, N., Zhao, J., Hawkes, D.

Wiley, 1997, 2, 203

Control of liquid cooling garments: technical control of body heat storage

1996 - Martin Hexamer, Werner, J.

Appl Human Sci, vol. 15, pp. 177-185, 1996.

Transient four-wave mixing with collinear pump and probe

1996 - A. Mecozzi, J. Mørk, Martin R. Hofmann

Opt. Lett. 21, 1017

Automatic multi-loop control of cooling garments

1996 - Martin Hexamer, Xu, X., Werner, J.

in Environmental Ergonomics - Recent Progress and New Frontiers, Y. Shapiro, D. S. Moran, and Y. Epstein, Eds. London and Tel Aviv: Freud Publishing House Ltd., 1996, pp. 343-346.

Time resolved four-wave mixing technique to measure the ultrafast coherent dynamics in semiconductor optical amplifiers

1996 - Martin R. Hofmann , S.D. Brorson, J. Mørk, A. Mecozzi

Appl. Phys. Lett. 68, 3236

A New Architecture for a Parallel Finite Field Multiplier with Low Complexity Based on Composite Fields

1996 - Chris­tof Paar

IEEE Transactions on Computers, vol. 45, no. 7, pp. 856-861, July, 1996. [ps]

Modelling and characterization of colliding pulse modelocked (CPM) quantum well lasers

1996 - S. Bischoff, S.D. Brorson, T. Franck, Martin R. Hofmann , L. Prip, M.P. Sørensen, J. Mørk

Proc. SPIE 2693, 477 (1996) Physics and Simulation of Optoelectronic Devices IV, Ed. W.W. Chow and M. Osinski

Accuracy Analysis for Image-Guided Neurosurgery using Fiducial Skin Markers, 3D CT Imaging, and an Optical Localizer System

1996 - Georg Schmitz, Fuchs, M., Wischmann, H.-A., Neumann, A., Weese, J., Zylka, W., Sabczynski, J., Kuhn, M. H., Buzug, T, Gieles, P. M. C.

Proc. Computer Assisted Radiology , Elsevier, 1996, 770-775

Theory of coherent phenomena in pump - probe excitation of semiconductor amplifiers

1995 - A. Girndt, A. Knorr, Martin R. Hofmann , S.W. Koch

J. Appl. Phys. 78, 2946

Control of liquid cooling garments: subjective versus technical control of thermal comfort

1995 - Martin Hexamer, Werner, J.

Appl Human Sci, vol. 14, pp. 271-278, 1995.

Long-term stable mode locking of a visible diode laser with phase-conjugate feedback

1995 - E. Miltenyi, M.O. Ziegler, Martin R. Hofmann , J. Sacher, W. Elsäßer, E.O. Göbel, D.L. Mac Farlane

Optics Lett. 20, 734

Phase and amplitude stabitlity of an external cavity laser diode modelocked by optoelectronic feedback

1995 - M.O. Ziegler, Martin R. Hofmann , J. Sacher, W. Elsäßer, E.O. Göbel

Electron. Lett. 31, 371
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