TY  - JOUR
A1  - Ostermeyer, Martin
A1  - Menzel, Ralf
T1  - Laser resonators with brillouin mirrors
JF  - Phase conjugate laser optics
Y1  - 2004
SN  - 0-471-43957-6
PB  - Wiley
CY  - Hoboken, NJ
ER  - 
TY  - JOUR
A1  - Unterhuber, Angelika
A1  - Povazay, B.
A1  - Bizheva, K.
A1  - Hermann, B.
A1  - Sattmann, Harald
A1  - Stingl, A.
A1  - Le, Trang
A1  - Seefeldt, Michael
A1  - Menzel, Ralf
A1  - Preusser, Matthias
A1  - Budka, Herbert
A1  - Schubert, Christian
A1  - Reitsamer, H.
A1  - Ahnelt, Peter Kurt
A1  - Morgan, J. E.
T1  - Advances in broad bandwidth light sources for ultrahigh resolution optical coherence tomography
N2  - 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
Y1  - 2004
SN  - 0031-9155
ER  - 
TY  - JOUR
A1  - von Seggern, David
A1  - Modrakowski, Claudia
A1  - Spitz, Christian
A1  - Schlüter, A. D.
A1  - Menzel, Ralf
T1  - Charge transfer initiated by optical excitation in diester substituted biphenylpyrene as a function of the solvent characterized by excited state absorption spectroscopy
N2  - 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
Y1  - 2004
ER  - 
TY  - JOUR
A1  - Tedeschi, Concetta
A1  - Li, L.
A1  - Möhwald, Helmuth
A1  - Spitz, Christian
A1  - von Seggern, David
A1  - Menzel, Ralf
A1  - Kirstein, Stefan
T1  - Engineering of layer-by-layer coated capsules with the prospect of materials for efficient and directed electron transfer
N2  - 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
Y1  - 2004
ER  - 
TY  - JOUR
A1  - Seefeldt, Michael
A1  - Heuer, Axel
A1  - Menzel, Ralf
T1  - Compact white-light source with an average output power of 2.4 W and 900 nm spectral bandwidth
Y1  - 2003
ER  - 
TY  - JOUR
A1  - Heuer, Axel
A1  - Hänisch, Christoph
A1  - Menzel, Ralf
T1  - Low-power phase conjugation based on stimulated Brillouin scattering in fiber amplifiers
Y1  - 2003
ER  - 
TY  - JOUR
A1  - Raab, Volker
A1  - Skoczowsky, Danilo
A1  - Menzel, Ralf
T1  - 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
Y1  - 2003
ER  - 
TY  - JOUR
A1  - Heuer, Axel
A1  - Hänisch, Christoph
A1  - Menzel, Ralf
T1  - New concept for low threshold optical phase conjugation via SBS in a fiber amplifier
Y1  - 2003
SN  - 0-8194-4772-2
ER  - 
TY  - JOUR
A1  - Ostermeyer, Martin
A1  - Klemz, Guido
A1  - Kubina, P.
A1  - Menzel, Ralf
T1  - Quasi-continuous-wave birefringence-compensated single- and double-rod Nd : YAG lasers
Y1  - 2002
ER  - 
TY  - JOUR
A1  - Raab, Volker
A1  - Menzel, Ralf
T1  - External resonator design for high-power laser diodes that yields 400 mW of TEM00 power
Y1  - 2002
ER  -