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Research

Deutsch

Diploma Thesis

"Hochleistungsverstärkung eines schmalbandigen optischen Signals in aktiven Lichtwellenleitern" -
"High power amplification of a narrow bandwidth optical signal in active light waveguides"

PhD Thesis

"Faserverstärkerkonzepte für schmalbandige optische Signale" -
"Fiber amplifier concepts for narrow-bandwidth optical signals"

Interests

Publications

J. Limpert, A. Liem, S. Höfer, T. Gabler, H. Zellmer, A. Tünnermann, S. Unger, S. Jetschke, H.-R-Müller High average power ultrafast Yb-doped fiber amplifier. OSA TOPs 50, 348-354 (2001)
Hoefer, Sven, Liem, A., Limpert, J., Zellmer, H., Tuennermann, A., Unger, S., Jetschke, S., Mueller, H. R., Freitag, I. Single-frequency master-oscillator fiber power amplifier system emitting 20 W of power. Optics Letters 26, 1326-1328 (Sep. 2001).
A. Liem, J. Limpert, S. Höfer, S. Nolte, H. Zellmer, A. Tünnermann, V. Reichel, S. Unger, S. Jetschke, H.-R. Müller High average power femtosecond fiber CPA system. OSA TOPs 68, 128-132 (2002)
Limpert, J., Hoefer, S., Liem, A., Zellmer, H., Tuennermann, A., Knoke, S., Voelckel, H. 100-W average-power, high-energy nanosecond fiber amplifier. Applied Physics B - Lasers and Optics 75 (4-5), 477-479 (Oct. 2002).
Tunnermann A, Hofer S, Liem A, Limpert J, Reich M, Roser F, Schreiber T, Zellmer H, Peschel T, Guyenot V: Power scaling of high-power fiber laseres and amplifiers. Laser Physics 15 (1): 107-117 (Jan 2005).
Y. Joeng, Y. Kim, K. Mörl , S. Höfer, A. Tünnermann, K. Oh: Q-switching of Yb3+-doped fiber laser using a novel micro-actuating platform light modulator. Optics Express 13, 10302 (2005).

Talks and Posters

DPG Spring Meeting 2001, Berlin; Poster
"High power single-frequency master-oscillator fiber amplifier system"

CLEO World 2001, Baltimore; Postdeadline Talk
"20 W single-frequency fiber power amplifier"

CLEO/Europe 2001, Munich; Talk
"Single frequency master oscillator fiber power amplifier system with 20 W output power"

DPG Spring Meeting 2002, Osnabrück; Talk
"Faserverstärker mit mJ-Pulsenergie und hoher mittlerer Leistung" -
"Fiber amplifier with mJ-pulse energy and high average output power"

CLEO World 2002, Long Beach; Talk
"150W Nd/Yb-doped fiber laser"

CLEO World 2002, Long Beach; Talk
"High-average-power millijoule fiber amplifier system"

Norddeutscher Lasertag 2002 (Northern Germany Laser Day), Hannover; Poster
"Coherent beam combining of fiber amplifiers"

CLEO World 2003, Baltimore; Talk
"90W single-frequency fiber amplifier"

CLEO World 2003, Baltimore; Talk
"Power and energy scaling of fiber laser systems based on Ytterbium-doped large-mode-area fibers"

CLEO/Europe 2003, Munich; Talk
"Coherent beam combining of fiber amplifiers"

CLEO World 2004, San Francisco; Talk
"High power linearly polarized fiber laser"

CLEO World 2004, San Francisco; Talk
"Extended large-mode-area single-mode microstructured fiber laser"


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Sven Höfer - webmaster@svenhoefer.de

Last change: 23. October 2008