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Articles (57)
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1

Material and technology trends in fiber optics

Schuster, Kay, Unger, Sonja, Aichele, Claudia, Lindner, Florian, Grimm, Stephan, Litzkendorf, Doris, Kobelke, Jens, Bierlich, Jörg, Wondraczek, Katrin, Bartelt, Hartmut

Journal:

Advanced Optical Technologies

Année:

2014

Langue:

english

Fichier:

PDF, 5.43 MB

english, 2014

2

Taper Device for Tolerant Coupling of Free-Space Optical Beams Into Single-Mode Fiber

Weinert, Carl M., Hiegemann, Stephan, Perlot, Nicolas, Rohde, Michael, Hoh, Denny, Unger, Sonja

Journal:

IEEE Photonics Technology Letters

Année:

2014

Langue:

english

Fichier:

PDF, 1.03 MB

english, 2014

3

Length distributed measurement of temperature effects in Yb-doped fibers during pumping

Leich, Martin, Fiebrandt, Julia, Schwuchow, Anka, Jetschke, Sylvia, Unger, Sonja, Jäger, Matthias, Rothhardt, Manfred, Bartelt, Hartmut

Journal:

Optical Engineering

Année:

2014

Langue:

english

Fichier:

PDF, 847 KB

english, 2014

4

Advanced attenuation and fluorescence measurement methods in the investigation of photodarkening and related properties of ytterbium-doped fibers

Schwuchow, Anka, Unger, Sonja, Jetschke, Sylvia, Kirchhof, Johannes

Journal:

Année:

2014

Langue:

english

Fichier:

PDF, 818 KB

english, 2014

5

[IEEE 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Munich, Germany (2017.6.25-2017.6.29)] 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Temperature effects in core-pumped Yb fibers and their correlation to photodarkening

Leich, Mar-tin, Jetschke, Sylvia, Fiebrandt, Julia, Schwuchow, Anka, Unger, Sonja, Becker, Martin, Jager, Matthias

Année:

2017

Langue:

english

Fichier:

PDF, 193 KB

english, 2017

6

About the Fluorine Chemistry in MCVD: The Influence of Fluorine Doping on SiO2 Deposition

Dr. Johannes Kirchhof, Dr. sc. nat. Peter Kleinert, Dr. Sonja Unger, A. Funke

Journal:

Crystal Research and Technology

Année:

1986

Langue:

english

Fichier:

PDF, 431 KB

english, 1986

7

Fibers for high-power lasers and amplifiers

Hans-Rainer Müller, Johannes Kirchhof, Volker Reichel, Sonja Unger

Journal:

Comptes Rendus Physique

Année:

2006

Langue:

english

Fichier:

PDF, 285 KB

english, 2006

8

Neuropsychological profiles in MCI and in depression: Differential cognitive dysfunction patterns or similar final common pathway disorder?

Josef Zihl, Simone Reppermund, Sonja Thum, Kathrin Unger

Journal:

Journal of Psychiatric Research

Année:

2010

Langue:

english

Fichier:

PDF, 206 KB

english, 2010

9

Towards a monolithic fiber laser with deep UV femtosecond-induced fiber Bragg gratings

Martin Becker, Sven Brückner, Martin Leich, Eric Lindner, Manfred Rothhardt, Sonja Unger, Sylvia Jetschke, Hartmut Bartelt

Journal:

Optics Communications

Année:

2011

Langue:

english

Fichier:

PDF, 719 KB

english, 2011

10

Short-Length 10-W cw Neodymium-Doped M-Profile Fiber Laser

Glas, Peter, Naumann, Martin, Schirrmacher, André, Unger, Sonja, Pertsch, Thomas

Journal:

Année:

1998

Langue:

english

Fichier:

PDF, 670 KB

english, 1998

11

Single-pulse fiber Bragg gratings and specific coatings for use at elevated temperatures

Bartelt, Hartmut, Schuster, Kay, Unger, Sonja, Chojetzki, Christoph, Rothhardt, Manfred, Latka, Ines

Journal:

Année:

2007

Langue:

english

Fichier:

PDF, 1.23 MB

english, 2007

12

Temperature influence on the photodarkening kinetics in Yb-doped silica fibers

Leich, Martin, Jetschke, Sylvia, Unger, Sonja, Kirchhof, Johannes

Journal:

Journal of the Optical Society of America B

Année:

2011

Langue:

english

Fichier:

PDF, 527 KB

english, 2011

13

Photodarkening in Yb doped fibers: experimental evidence of equilibrium states depending on the pump power

Jetschke, Sylvia, Unger, Sonja, Röpke, Ulrich, Kirchhof, Johannes

Journal:

Année:

2007

Langue:

english

Fichier:

PDF, 360 KB

english, 2007

14

Efficient Yb laser fibers with low photodarkening by optimization of the core composition

Jetschke, Sylvia, Unger, Sonja, Schwuchow, Anka, Leich, Martin, Kirchhof, Johannes

Journal:

Année:

2008

Langue:

english

Fichier:

PDF, 144 KB

english, 2008

15

Non-isothermal bleaching of photodarkened Yb-doped fibers

Leich, Martin, Röpke, Ulrich, Jetschke, Sylvia, Unger, Sonja, Reichel, Volker, Kirchhof, Johannes

Journal:

Année:

2009

Langue:

english

Fichier:

PDF, 324 KB

english, 2009

16

A micro-structured aperture made of a hollow triangular-core fiber for novel beam shaping

Ha, Woosung, Lee, Sejin, Kim, Jongki, Jeong, Yoonseob, Oh, Kyunghwan, Kobelke, Jens, Schuster, Kay, Unger, Sonja, Schwuchow, Anka, Kim, Jun Ki

Journal:

Année:

2010

Langue:

english

Fichier:

PDF, 1.70 MB

english, 2010

17

Influence of Tm- or Er-codoping on the photodarkening kinetics in Yb fibers

Jetschke, Sylvia, Leich, Martin, Unger, Sonja, Schwuchow, Anka, Kirchhof, Johannes

Journal:

Année:

2011

Langue:

english

Fichier:

PDF, 927 KB

english, 2011

18

Femtosecond pulse-induced fiber Bragg gratings for in-core temperature measurement in optically pumped Yb-doped silica fibers

Leich, Martin, Fiebrandt, Julia, Schwuchow, Anka, Unger, Sonja, Jetschke, Sylvia, Bartelt, Hartmut

Journal:

Optics Communications

Année:

2012

Langue:

english

Fichier:

PDF, 326 KB

english, 2012

19

Raman-on-chip device and detection fibres with fibre Bragg grating for analysis of solutions and particles

Dochow, Sebastian, Becker, Martin, Spittel, Ron, Beleites, Claudia, Stanca, Sarmiza, Latka, Ines, Schuster, Kay, Kobelke, Jens, Unger, Sonja, Henkel, Thomas, Mayer, Günter, Albert, Jens, Rothhardt, Ma

Journal:

Année:

2013

Langue:

english

Fichier:

PDF, 588 KB

english, 2013

20

SPIE Proceedings [SPIE Prague -- 2004 DL over - Prague, Czech Republic (Monday 30 August 2004)] XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers - Fiber-laser power scaling beyond the 1-kilowatt level by Nd:Yb co-doping

Reichel, Volker, Moerl, Klaus W., Unger, Sonja, Jetschke, Sylvia, Mueller, Hans-Rainer, Kirchhof, Johannes, Sandrock, Thomas, Harschack, Alexander, Liem, Andreas, Limpert, Jens, Zellmer, Holger, Tuenn

Année:

2005

Langue:

english

Fichier:

PDF, 238 KB

english, 2005

21

SPIE Proceedings [SPIE Photonics North 2009 - Quebec, Canada (Sunday 24 May 2009)] Photonics North 2009 - Fiber Bragg grating inscription with DUV femtosecond exposure and two beam interference

Becker, Martin, Bergmann, Joachim, Brückner, Sven, Lindner, Eric, Rothhardt, Manfred, Schuster, Kay, Kobelke, Jens, Unger, Sonja, Bartelt, Hartmut, Fernandes, Luis A., Marques, Paulo V. S., Vallée, Ré

Année:

2009

Langue:

english

Fichier:

PDF, 3.62 MB

english, 2009

22

SPIE Proceedings [SPIE Integrated Optoelectronic Devices 2005 - San Jose, CA (Saturday 22 January 2005)] Optical Components and Materials II - Dopant interactions in high-power laser fibers

Kirchhof, Johannes, Unger, Sonja, Schwuchow, Anka, Jetschke, Sylvia, Knappe, Bruno, Jiang, Shibin, Digonnet, Michel J.

Année:

2005

Langue:

english

Fichier:

PDF, 170 KB

english, 2005

23

SPIE Proceedings [SPIE Integrated Optoelectronic Devices 2007 - San Jose, CA (Saturday 20 January 2007)] Optical Components and Materials IV - Codoped materials for high power fiber lasers: diffusion behaviour and optical properties

Unger, Sonja, Schwuchow, Anka, Dellith, Jan, Kirchhof, Johannes, Jiang, Shibin, Digonnet, Michel J. F.

Année:

2007

Langue:

english

Fichier:

PDF, 198 KB

english, 2007

24

A highly efficient Yb-doped silica laser fiber prepared by gas phase doping technology

Unger, Sonja, Lindner, Florian, Aichele, Claudia, Leich, Martin, Schwuchow, Anka, Kobelke, Jens, Dellith, Jan, Schuster, Kay, Bartelt, Hartmut

Journal:

Année:

2014

Langue:

english

Fichier:

PDF, 867 KB

english, 2014

25

Optical Phase Refractometer Based on Post-Processed Interferometric Tip Sensors

Ferreira, Marta S., Bierlich, Jorg, Unger, Sonja, Schuster, Kay, Santos, Jose L., Frazao, Orlando

Journal:

Journal of Lightwave Technology

Année:

2014

Langue:

english

Fichier:

PDF, 600 KB

english, 2014

26

[IEEE 2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC - Munich, Germany (2013.05.12-2013.05.16)] 2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC - Birefringence optimization in PM fibers by specifically influencing the draw induced intrinsic stresses

Just, Florian, Spittel, Ron, Grimm, Stephan, Unger, Sonja, Bierlich, Jorg, Jager, Matthias, Schuster, Kay, Bartelt, Hartmut

Année:

2013

Langue:

english

Fichier:

PDF, 183 KB

english, 2013

27

[IEEE 2013 IEEE Photonics Conference (IPC) - Bellevue, WA, USA (2013.09.8-2013.09.12)] 2013 IEEE Photonics Conference - Material modified microstructured fibers for nonlinear and sensor applications

Kobelke, Jens, Schuster, Kay, Bierlich, Joerg, Wondraczek, Katrin, Unger, Sonja, Schwuchow, Anka, Litzkendorf, Doris, Becker, Martin, Lehmann, Hartmut, Bartelt, Hartmut, Oh, Kyunghwan

Année:

2013

Langue:

english

Fichier:

PDF, 327 KB

english, 2013

28

Fluorine Containing High-Silica Glasses for Speciality Optical Fibers

Kirchhof, Johannes, Unger, Sonja, Knappe, B.

Journal:

Advanced Materials Research

Année:

2008

Langue:

english

Fichier:

PDF, 245 KB

english, 2008

29

SPIE Proceedings [SPIE Biomedical Optics 2003 - San Jose, CA (Saturday 25 January 2003)] Optical Fibers and Sensors for Medical Applications III - Fiber lasers: materials, structures and technologies

Kirchhof, Johannes, Unger, Sonja, Schwuchow, Anka, Gannot, Israel

Année:

2003

Langue:

english

Fichier:

PDF, 223 KB

english, 2003

30

SPIE Proceedings [SPIE SPIE OPTO - San Francisco, California, United States (Saturday 1 February 2014)] Optical Components and Materials XI - Spatially resolved in-core temperature measurement in rare-earth doped fibers during pumping

Digonnet, Michel J. F., Jiang, Shibin, Fiebrandt, Julia, Leich, Martin, Unger, Sonja, Schwuchow, Anka, Jäger, Matthias, Rothhardt, Manfred, Bartelt, Hartmut

Année:

2014

Langue:

english

Fichier:

PDF, 455 KB

english, 2014

31

SPIE Proceedings [SPIE Integrated Optoelectronic Devices 2004 - San Jose, CA (Monday 26 January 2004)] Optical Components and Materials - Spatial distribution effects and laser efficiency in Er/Yb-doped fibers

Kirchhof, Johannes, Unger, Sonja, Schwuchow, Anka, Jetschke, Sylvia, Knappe, Bruno, Digonnet, Michel J. F., Jiang, Shibin

Année:

2004

Langue:

english

Fichier:

PDF, 147 KB

english, 2004

32

Diffusion and Interface Effects during Preparation of All-Solid Microstructured Fibers

Jens, Kobelke, Jörg, Bierlich, Katrin, Wondraczek, Claudia, Aichele, Zhiwen, Pan, Sonja, Unger, Kay, Schuster, Hartmut, Bartelt

Journal:

Année:

2014

Langue:

english

Fichier:

PDF, 1.54 MB

english, 2014

33

Multicorelike guidance in a triangular-core hollow optical fiber and spectral evolution of its eigenmode degeneracy

Lee, Sejin, Ha, Woosung, Kobelke, Jens, Schuster, Kay, Unger, Sonja, Oh, Kyunghwan

Journal:

Année:

2012

Langue:

english

Fichier:

PDF, 368 KB

english, 2012

34

Diffusion in binary TiO_2-SiO_2 glasses

Kirchhof, Johannes, Unger, Sonja, Dellith, Jan, Scheffel, Andy

Journal:

Optical Materials Express

Année:

2014

Langue:

english

Fichier:

PDF, 1.59 MB

english, 2014

35

Multicore fiber with integrated fiber Bragg gratings for background-free Raman sensing

Dochow, Sebastian, Latka, Ines, Becker, Martin, Spittel, Ron, Kobelke, Jens, Schuster, Kay, Graf, Albrecht, Brückner, Sven, Unger, Sonja, Rothhardt, Manfred, Dietzek, Benjamin, Krafft, Christoph, Popp

Journal:

Année:

2012

Langue:

english

Fichier:

PDF, 2.50 MB

english, 2012

36

Evidence of Tm impact in low-photodarkening Yb-doped fibers

Jetschke, Sylvia, Unger, Sonja, Schwuchow, Anka, Leich, Martin, Fiebrandt, Julia, Jäger, Matthias, Kirchhof, Johannes

Journal:

Année:

2013

Langue:

english

Fichier:

PDF, 2.66 MB

english, 2013

37

Diffusion coefficients of boron in vitreous silica at high temperatures

Kirchhof, Johannes, Unger, Sonja, Dellith, Jan, Scheffel, Andy, Teichmann, Christian

Journal:

Optical Materials Express

Année:

2012

Langue:

english

Fichier:

PDF, 2.24 MB

english, 2012

38

Photodarkening kinetics as a function of Yb concentration and the role of Al codoping

Jetschke, Sylvia, Unger, Sonja, Leich, Martin, Kirchhof, Johannes

Journal:

Année:

2012

Langue:

english

Fichier:

PDF, 452 KB

english, 2012

39

[OSA Bragg Gratings, Photosensitivity, and Poling in Glass Waveguides - Barcelona (2014..-..)] Advanced Photonics - Incoherent beam combining of 5.1kW using a 7x1 signal combiner into a 50μm core output fiber

Eschrich, Tina, Hoh, Denny, Just, Florian, Kobelke, Jens, Unger, Sonja, Jäger, Matthias, Bartelt, Hartmut

Année:

2014

Langue:

english

Fichier:

PDF, 146 KB

english, 2014

40

SPIE Proceedings [SPIE SPIE LASE: Lasers and Applications in Science and Engineering - San Jose, CA (Saturday 24 January 2009)] Fiber Lasers VI: Technology, Systems, and Applications - Comparison of silica-based materials and fibers in side- and end-pumped fiber lasers

Langner, Andreas, Schötz, Gerhard, Such, Mario, Reichel, Volker, Grimm, Stephan, Leich, Martin, Unger, Sonja, Kirchhof, Johannes, Wedel, Björn, Krause, Volker, Rehmann, Georg, Gapontsev, Denis V., Kli

Année:

2009

Langue:

english

Fichier:

PDF, 411 KB

english, 2009

41

SPIE Proceedings [SPIE SPIE LASE - San Francisco, California, United States (Saturday 1 February 2014)] Fiber Lasers XI: Technology, Systems, and Applications - Optimization of laser fibers for high pump light absorption

Ramachandran, Siddharth, Bierlich, Jörg, Kobelke, Jens, Jetschke, Sylvia, Grimm, Stephan, Unger, Sonja, Schuster, Kay

Année:

2014

Langue:

english

Fichier:

PDF, 830 KB

english, 2014

42

Impact of p38 MAP Kinase Inhibitors on LPS-Induced Release of TNF-a in Whole Blood and Primary Cells from Different Species

Fehr, Sarah, Unger, Anke, Schaeffeler, Elke, Herrmann, Sonja, Laufer, Stefan, Schwab, Matthias, Albrecht, Wofgang

Journal:

Cellular Physiology and Biochemistry

Année:

2015

Langue:

english

Fichier:

PDF, 889 KB

english, 2015

43

SPIE Proceedings [SPIE Advanced High-Power Lasers and Applications - Osaka, Japan (Monday 1 November 1999)] Advanced High-Power Lasers - 8-W highly efficient Yb-doped fiber laser

Reichel, Volker, Unger, Sonja, Hagemann, Volker, Mueller, Hans-Rainer, Auerbach, Mario, Osinski, Marek, Powell, Howard T., Toyoda, Koichi

Année:

2000

Langue:

english

Fichier:

PDF, 1.03 MB

english, 2000

44

SPIE Proceedings [SPIE High-Power Lasers and Applications - San Jose, CA (Saturday 25 January 2003)] Advances in Fiber Lasers - Applications of pumped-multiplexed Yb-doped fiber lasers

Reichel, Volker, Unger, Sonja, Bruckner, Sven, Morl, Klaus, Muller, Hans-Rainer, Kirchhof, Johannes, Sandrock, Thomas, Harschack, Alexander, Durvasula, L. N.

Année:

2003

Langue:

english

Fichier:

PDF, 407 KB

english, 2003

45

SPIE Proceedings [SPIE Photonics North 2010 - Niagara Falls, Canada (Tuesday 1 June 2010)] Photonics North 2010 - Fiber Bragg grating inscription with UV femtosecond exposure and two beam interference for fiber laser applications

Becker, Martin, Schriemer, Henry P., Kleiman, Rafael N., Brückner, Sven, Lindner, Eric, Rothhardt, Manfred, Unger, Sonja, Kobelke, Jens, Schuster, Kay, Bartelt, Hartmut

Année:

2010

Langue:

english

Fichier:

PDF, 636 KB

english, 2010

46

SPIE Proceedings [SPIE Lasers and Applications in Science and Engineering - San Jose, CA (Saturday 22 January 2005)] Fiber Lasers II: Technology, Systems, and Applications - Nd:Yb-codoped silica fibers for high power fiber lasers: fluorescence and laser properties

Jetschke, Sylvia, Durvasula, L. N., Brown, Andrew J. W., Reichel, Volker, Moerl, Klaus, Nilsson, Johan, Unger, Sonja, Roepke, Ulrich, Mueller, Hans-Rainer

Année:

2005

Langue:

english

Fichier:

PDF, 146 KB

english, 2005

47

SPIE Proceedings [SPIE Optoelectronics and High-Power Lasers & Applications - San Jose, CA (Saturday 24 January 1998)] Solid State Lasers VII - High-power single-mode Nd-doped fiber laser

Reichel, Volker, Unger, Sonja, Mueller, Hans-Rainer, Zellmer, Holger, Scheps, Richard

Année:

1998

Langue:

english

Fichier:

PDF, 1.93 MB

english, 1998

48

SPIE Proceedings [SPIE International Symposium on Biomedical Optics - San Jose, CA (Saturday 19 January 2002)] Optical Fibers and Sensors for Medical Applications II - Transmission behavior of silica core: fluorine-doped cladding fibers in the visible and ultraviolet region

Unger, Sonja, Kirchhof, Johannes, Schroeter, Siegmund, Schwuchow, Anka, Frost, Holger, Gannot, Israel

Année:

2002

Langue:

english

Fichier:

PDF, 143 KB

english, 2002

49

SPIE Proceedings [SPIE Asia-Pacific Optical and Wireless Communications Conference and Exhibit - Beijing, China (Monday 12 November 2001)] Optical Fiber and Planar Waveguide Technology - High-power stability of optical fibers for the visible wavelength region

Kirchhof, Johannes, Unger, Sonja, Schroeter, Siegmund, Schwuchow, Anka, Frost, Holger, Deter, Christhard, Jian, Shuisheng, Liu, Yanming

Année:

2001

Langue:

english

Fichier:

PDF, 336 KB

english, 2001

50

SPIE Proceedings [SPIE Lasers and Applications in Science and Engineering - San Jose, CA (Saturday 20 January 2007)] Fiber Lasers IV: Technology, Systems, and Applications - Preparation of large-mode-area laser fibers with microstructured cores

Kobelke, Jens, Harter, Donald J., Tünnermann, Andreas, Schuster, Kay, Unger, Sonja, Broeng, Jes, Headley III, Clifford, Reichel, Volker, Schwuchow, Anka, Mörl, Klaus, Kirchhof, Johannes, Leich, Martin

Année:

2007

Langue:

english

Fichier:

PDF, 718 KB

english, 2007