Mr. Henning Höpfner Profile

Henning Höpfner

at Ruhr-Univ Bochum

SPIE Involvement:

Author

Publications (12)

Proceedings Article | 8 September 2015 Paper

Controlled switching and frequency tuning of polarization oscillations in vertical-cavity surface-emitting lasers

Markus Lindemann, Henning Höpfner, Nils Gerhardt, Martin Hofmann, Tobias Pusch, Rainer Michalzik

Proceedings Volume 9551, 95512Z (2015) https://doi.org/10.1117/12.2197970

KEYWORDS: Polarization, Vertical cavity surface emitting lasers, Switching, Birefringence, Picosecond phenomena, Ultrafast phenomena, Switches, Spintronics, Modulation, Electroluminescent displays

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Proceedings Article | 3 September 2015 Paper

Towards high-frequency operation of polarization oscillations in spin vertical-cavity surface-emitting lasers

Martin Hofmann, Henning Höpfner, Markus Lindemann, Nils Gerhardt, Tobias Pusch, Rainer Michalzik

Proceedings Volume 9551, 95512O (2015) https://doi.org/10.1117/12.2197969

KEYWORDS: Polarization, Birefringence, Vertical cavity surface emitting lasers, Ultrafast phenomena, Modulation, Spintronics, Electroluminescent displays, Optical interconnects, Electro optical modeling, Micropositioners

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Proceedings Article | 4 March 2015 Paper

Ultrafast polarization dynamics with controlled polarization oscillations in vertical-cavity surface-emitting lasers

Markus Lindemann, Henning Höpfner, Nils Gerhardt, Tobias Pusch, Rainer Michalzik, Martin Hofmann

Proceedings Volume 9381, 93810I (2015) https://doi.org/10.1117/12.2076920

KEYWORDS: Polarization, Birefringence, Vertical cavity surface emitting lasers, Ultrafast phenomena, Temperature metrology, Electroluminescent displays, Modulation, Polarization control, Magnetism, Electro optical modeling

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Proceedings Article | 8 September 2014 Paper

Polarization dynamics in spin-polarized vertical-cavity surface-emitting lasers

Nils Gerhardt, Henning Höpfner, Markus Lindemann, Martin Hofmann

Proceedings Volume 9167, 916703 (2014) https://doi.org/10.1117/12.2063723

KEYWORDS: Polarization, Vertical cavity surface emitting lasers, Modulation, Picosecond phenomena, Birefringence, Ultrafast phenomena, Switching, Modes of laser operation, Optical communications, Electroluminescent displays

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Proceedings Article | 2 May 2014 Paper

Spin-controlled ultrafast vertical-cavity surface-emitting lasers

Martin Hofmann, Nils Gerhardt, Henning Höpfner, Markus Lindemann

Proceedings Volume 9134, 913408 (2014) https://doi.org/10.1117/12.2049684

KEYWORDS: Polarization, Vertical cavity surface emitting lasers, Modulation, Ultrafast phenomena, Semiconductor lasers, Picosecond phenomena, Mirrors, Switching, Silver, Wave plates

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Proceedings Article | 27 February 2014 Paper

Coherent switching of polarization oscillations in vertical-cavity surface-emitting lasers

Henning Höpfner, Markus Lindemann, Nils Gerhardt, Martin Hofmann

Proceedings Volume 9001, 90010G (2014) https://doi.org/10.1117/12.2039196

KEYWORDS: Polarization, Vertical cavity surface emitting lasers, Switching, Modulation, Picosecond phenomena, Ultrafast phenomena, Optical communications, Fourier transforms, Laser applications, Laser damage threshold

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Proceedings Article | 26 September 2013 Paper

Spin injection, transport, and relaxation in spin light-emitting diodes: magnetic field effects

Nils Gerhardt, Henning Höpfner, Carola Fritsche, Arne Ludwig, Astrid Ludwig, Frank Stromberg, Heiko Wende, Werner Keune, Dirk Reuter, Andreas Wieck, Martin Hofmann

Proceedings Volume 8813, 881318 (2013) https://doi.org/10.1117/12.2023324

KEYWORDS: Magnetism, Electroluminescent displays, Light emitting diodes, Spin polarization, Quantum dots, Spintronics, Semiconductors, Quantum wells, Gallium arsenide, Electrons

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Proceedings Article | 26 September 2013 Paper

Ultrafast spin-polarized vertical-cavity surface-emitting lasers

Henning Höpfner, Mingyuan Li, Hendrik Jähme, Thorsten Ackemann, Martin Hofmann, Markus Lindemann, Nils Gerhardt

Proceedings Volume 8813, 88132A (2013) https://doi.org/10.1117/12.2022720

KEYWORDS: Polarization, Vertical cavity surface emitting lasers, Ultrafast phenomena, Modulation, Electroluminescent displays, Laser damage threshold, Magnetism, Birefringence, Spintronics, Picosecond phenomena

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Proceedings Article | 14 March 2013 Paper

Spin relaxation in spin light-emitting diodes: effects of magnetic field and temperature

Henning Höpfner, Carola Fritsche, Arne Ludwig, Astrid Ludwig, Frank Stromberg, Heiko Wende, Werner Keune, Dirk Reuter, Andreas Wieck, Nils Gerhardt, Martin Hofmann

Proceedings Volume 8623, 86230A (2013) https://doi.org/10.1117/12.2001511

KEYWORDS: Magnetism, Light emitting diodes, Polarization, Gallium arsenide, Spintronics, Spin polarization, Temperature metrology, Electroluminescence, Indium arsenide, Anisotropy

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Proceedings Article | 21 February 2012 Paper

Room temperature spin relaxation in quantum dot based spin-optoelectronic devices

Frank Stromberg, Mingyuan Li, Werner Keune, Heiko Wende, Dirk Reuter, Astrid Ludwig, Nils Gerhardt, Arne Ludwig, Henning Höpfner, Martin Hofmann, Andreas Wieck

Proceedings Volume 8260, 82600A (2012) https://doi.org/10.1117/12.907821

KEYWORDS: Polarization, Magnetism, Light emitting diodes, Quantum dots, Indium arsenide, Iron, Metals, Semiconductors, Gallium arsenide, Ferromagnetics

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Proceedings Article | 8 February 2011 Paper

Spin induced gigahertz polarization oscillations in vertical-cavity surface-emitting laser devices

N. Gerhardt, H. Jaehme, M. Y. Li, H. Soldat, T. Ackemann, M. Hofmann

Proceedings Volume 7952, 79520B (2011) https://doi.org/10.1117/12.873758

KEYWORDS: Polarization, Vertical cavity surface emitting lasers, Picosecond phenomena, Anisotropy, Birefringence, Laser damage threshold, Spin dynamics, Wave plates, Single mode fibers

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Proceedings Article | 26 February 2010 Paper

Ultrafast circular polarization oscillations in spin-polarized vertical-cavity surface-emitting laser devices

T. Ackemann, N. Gerhardt, M. Li, M. Hofmann, H. Jaehme, H. Soldat

Proceedings Volume 7597, 75970Q (2010) https://doi.org/10.1117/12.841606

KEYWORDS: Polarization, Vertical cavity surface emitting lasers, Ultrafast phenomena, Picosecond phenomena, Birefringence, Switching, Dichroic materials, Electrons, Modulation, Electro optical modeling

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Showing 5 of 12 publications

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