@article{AfshaarvahidHeuerMenzeletal.2001, author = {Afshaarvahid, Shahraam and Heuer, Axel and Menzel, Ralf and Munch, Jesper}, title = {Temporal structure of stimulated-Brillouin-scattering reflectivity considering transversal-mode development}, year = {2001}, language = {en} } @article{Menzel2001, author = {Menzel, Ralf}, title = {Photonics : Linear and nonlinear interactions of laser light and matter}, publisher = {Springer}, address = {Berlin}, isbn = {3-540-67074-2}, pages = {873 S.}, year = {2001}, language = {en} } @article{SpitzvonSeggernGrunwaldtetal.2002, author = {Spitz, Christian and von Seggern, David and Grunwaldt, Gisela and Menzel, Ralf}, title = {Biochemical Diagnostics by Excited State Absorption Spectroscopy}, isbn = {0-8194-4365-4}, year = {2002}, language = {en} } @article{OstermeyerKlemzMenzel2002, author = {Ostermeyer, Martin and Klemz, Guido and Menzel, Ralf}, title = {Double rod Nd:YAG laser with 180 W average output and diffraction limited beam quality via path-matched birefringence compensation}, isbn = {0-8194-4368-9}, year = {2002}, language = {en} } @article{RaabMenzel2002, author = {Raab, Volker and Menzel, Ralf}, title = {Phase-locked array of 25 broad-area lasers}, isbn = {0-8194-4368-9}, year = {2002}, language = {en} } @article{OstermeyerKlemzHeueretal.2002, author = {Ostermeyer, Martin and Klemz, Guido and Heuer, Axel and Menzel, Ralf}, title = {High Brightness Double and Single Rod Nd:YAG Laser Oscillators with up to 180 W and M2 < 1.2}, year = {2002}, language = {en} } @book{HeuerHaenischOstermeyeretal.2002, author = {Heuer, Axel and H{\"a}nisch, Christoph and Ostermeyer, Martin and Menzel, Ralf}, title = {Low Power Threshold Phase Conjugating Mirrors by SBS in Yb-doped Fiber Amplifiers}, year = {2002}, language = {en} } @article{OstermeyerKlemzKubinaetal.2002, author = {Ostermeyer, Martin and Klemz, Guido and Kubina, P. and Menzel, Ralf}, title = {Quasi-continuous-wave birefringence-compensated single- and double-rod Nd : YAG lasers}, year = {2002}, language = {en} } @article{RaabMenzel2002, author = {Raab, Volker and Menzel, Ralf}, title = {External resonator design for high-power laser diodes that yields 400 mW of TEM00 power}, year = {2002}, language = {en} } @article{HeuerHaenischMenzel2003, author = {Heuer, Axel and H{\"a}nisch, Christoph and Menzel, Ralf}, title = {New concept for low threshold optical phase conjugation via SBS in a fiber amplifier}, isbn = {0-8194-4772-2}, year = {2003}, language = {en} } @article{RaabSkoczowskyMenzel2003, author = {Raab, Volker and Skoczowsky, Danilo and Menzel, Ralf}, title = {Tuning high-power diodes with as much as 0.38 W of power and M2 = 1.2 over a range of 32 nm with 3-GHz bandwidth}, year = {2003}, language = {en} } @article{HeuerHaenischMenzel2003, author = {Heuer, Axel and H{\"a}nisch, Christoph and Menzel, Ralf}, title = {Low-power phase conjugation based on stimulated Brillouin scattering in fiber amplifiers}, year = {2003}, language = {en} } @article{SeefeldtHeuerMenzel2003, author = {Seefeldt, Michael and Heuer, Axel and Menzel, Ralf}, title = {Compact white-light source with an average output power of 2.4 W and 900 nm spectral bandwidth}, year = {2003}, language = {en} } @article{vonSeggernModrakowskiSpitzetal.2004, author = {von Seggern, David and Modrakowski, Claudia and Spitz, Christian and Schl{\"u}ter, A. D. and Menzel, Ralf}, title = {Charge transfer initiated by optical excitation in diester substituted biphenylpyrene as a function of the solvent characterized by excited state absorption spectroscopy}, year = {2004}, abstract = {Cross-sections for ground and excited state absorptions of the charge transfer system 3-(3-tert- butoxycarbonylamino-propyl)-4'-pyren-1-yl-biphenyl-2,5-dicarbo xylicacid dimethyl ester (Py-C) are determined from nonlinear absorption and fluorescence measurements as a function of solvent. While in non-polar solvents no stable charge transfer (CT) state occurs after optical excitation, in polar solvents the CT state is stabilized. (C) 2004 Elsevier B.V. All rights reserved}, language = {en} } @article{TedeschiLiMoehwaldetal.2004, author = {Tedeschi, Concetta and Li, L. and M{\"o}hwald, Helmuth and Spitz, Christian and von Seggern, David and Menzel, Ralf and Kirstein, Stefan}, title = {Engineering of layer-by-layer coated capsules with the prospect of materials for efficient and directed electron transfer}, year = {2004}, abstract = {We show a Lefschetz fixed point formula for holomorphic functions in a bounded domain D with smooth boundary in the complex plane. To introduce the Lefschetz number for a holomorphic map of D, we make use of the Bergman kernel of this domain. The Lefschetz number is proved to be the sum of the usual contributions of fixed points of the map in D and contributions of boundary fixed points, these latter being different for attracting and repulsing fixed points}, language = {en} } @article{UnterhuberPovazayBizhevaetal.2004, author = {Unterhuber, Angelika and Povazay, B. and Bizheva, K. and Hermann, B. and Sattmann, Harald and Stingl, A. and Le, Trang and Seefeldt, Michael and Menzel, Ralf and Preusser, Matthias and Budka, Herbert and Schubert, Christian and Reitsamer, H. and Ahnelt, Peter Kurt and Morgan, J. E.}, title = {Advances in broad bandwidth light sources for ultrahigh resolution optical coherence tomography}, issn = {0031-9155}, year = {2004}, abstract = {Novel ultra-broad bandwidth light sources enabling unprecedented sub-2 pm axial resolution over the 400 nm-1700 nm wavelength range have been developed and evaluated with respect to their feasibility for clinical ultrahigh resolution optical coherence tomography (UHR OCT) applications. The state-of-the-art light sources described here include a compact Kerr lens mode locked Ti:sapphire laser (lambda(c) = 785 nm, Deltalambda = 260 nm, P-out = 50 mW) and different nonlinear fibre-based light sources with spectral bandwidths (at full width at half maximum) up to 350 nm at lambda(c) = 1130 nm and 470 nm at lambda(c) = 1375 run. In vitro UHR OCT imaging is demonstrated at multiple wavelengths in human cancer cells, animal ganglion cells as well as in neuropathologic and ophthalmic biopsies in order to compare and optimize UHR OCT image contrast, resolution and penetration depth}, language = {en} } @article{Menzel2004, author = {Menzel, Ralf}, title = {Metrological Applications}, isbn = {3-540-20114-9}, year = {2004}, language = {en} } @article{OstermeyerMenzel2004, author = {Ostermeyer, Martin and Menzel, Ralf}, title = {Laser resonators with brillouin mirrors}, series = {Phase conjugate laser optics}, journal = {Phase conjugate laser optics}, publisher = {Wiley}, address = {Hoboken, NJ}, isbn = {0-471-43957-6}, year = {2004}, language = {en} } @article{HeuerMenzel2004, author = {Heuer, Axel and Menzel, Ralf}, title = {Principles of Phase Conjugating Brillouin Mirrors}, isbn = {0-471-43957-6}, year = {2004}, language = {en} } @book{OstermeyerKappeMenzeletal.2005, author = {Ostermeyer, Martin and Kappe, Philip and Menzel, Ralf and Sommer, S. and Dausinger, Friedrich}, title = {Laser drilling in thin materials with bursts of ns-pulses generated by stimulated Brillouin scattering (SBS)}, year = {2005}, abstract = {A passively Q-switched laser with a nonlinear mirror on the basis of stimulated Brillouin scattering (SBS), generates bursts of pulses with a few 10 ns pulse duration and a separation between 20-90 mu s. Percussion drilling and trepanning are performed in different materials with 1 mm thickness. The optimum parameter set of these pulse trains with regard to the burr height and ablation rate is investigated. Differences in the processing results between single pulse and multi pulse structures are discussed. In addition the laser allowed for transiently mode locked operation. Results for mode locked and merely Q-switched operation were compared}, language = {en} }