JLA Vol:8 Iss:3 (High‐power, high‐beam‐quality solid‐state lasers for materials processing applications)

Authors:
Lloyd A. Hackel
C. Brent Dane
Mark R. Hermann
John Honig
Luis E. Zapata
Mary A. Norton
Lawrence Livermore National Laboratory, P.O. Box 808, L‐487, Livermore, CA 94550, U.S.A.

The Laser Science and Technology Department at Lawrence Livermore National Laboratory is developing solid‐state lasers with high average power and high beam quality. Specific systems include a laser to generate 1.0–1.4 nm X‐rays for proximity print lithography, a 400‐mJ, 500‐Hz laser for 13.0 nm projection lithography and unique systems for speckle imaging, laser radars, and medical treatments.

JLA Vol:8 Iss:3 (Laser Hardened Materials Evaluation Laboratory (LHMEL))

Authors:
R. J. Hull
M. L. Lander

Since 1976, the Laser Hardened Materials Evaluation Laboratory (LHMEL) has been characterizing material responses to laser energy in support of national defense programs and the aerospace industry. Now that capability is available to commercial industry as well. LHMEL's power levels, beam uniformity, and diagnostics capabilities make it an ideal facility for proof‐of‐concept testing or process development. Located at Wright‐Patterson Air Force Base, Ohio, LHMEL is managed by the Wright Laboratory Materials Directorate and operated by Lawrence Associates, Incorporated. The facility's advanced hardware is centered aroun...

JLA Vol:24 Iss:4 (Sub-100 nm material processing and imaging with a sub-15 femtosecond laser scanning microscope)

Authors:
Karsten Ko¨nig
Aisada Uchugonova
Martin Straub
Huijing Zhang
Martin Licht
Department of Biophotonics and Laser Technology, Faculty of Physics and Mechatronics, Saarland University, D-66123 Saarbru¨cken, Germany

Maziar Afshar
Dara Feili
Helmut Seidel
Department of Micromechanics, Microfluidics and Microactorics, Faculty of Physics and Mechatronics, Saarland University, D-66123 Saarbru¨cken, Germany

Low mean powers of 1–10 mW are sufficient for material nanoprocessing when using femtosecond laser microscopes. In particular, near infrared 12 fs laser pulses at pe...

JLA Vol:24 Iss:4 (Materials and technologies for fabrication of three-dimensional microstructures with sub-100 nm feature sizes by two-photon polymerization)

Authors:
Frank Burmeister
Institute of Applied Physics, Friedrich-Schiller-Universita¨t Jena, D-07743 Jena, Germany and Fraunhofer Institute for Applied Optics and Precision Engineering IOF, D-07745 Jena, Germany

So¨nke Steenhusen
Ruth Houbertz
Fraunhofer Institute for Silicate Research ISC, D-97082 Wu¨rzburg, Germany

Uwe D. Zeitner
Stefan Nolte
Andreas Tu¨nnermann
Institute of Applied Physics, Friedrich-Schiller-Universita¨t Jena, D-07743 Jena, Germany and Fraunhofer Institute for Applied Optics and Precision Engineering IOF, D-07745 Jena, Germany

The fabrication of sub-100 nm featu...

JLA Vol:24 Iss:4 (Nano structures via laser interference patterning for guided cell growth of neuronal cells)

Authors:
Elke A. Bremus-Koebberling
Stefan Beckemper
Fraunhofer Institute for Lasertechnology, Steinbachstr. 15, 52074 Aachen, Germany

Beate Koch


Arnold Gillner
Fraunhofer Institute for Lasertechnology, Steinbachstr. 15, 52074 Aachen, Germany and Chair for Laser Technology, Technical University Aachen, Germany

Laser interference patterning is a versatile tool for the fabrication of nano patterns. For this study, regular nano line patterns with feature sizes between 100 and 1000 nm were produced on polymers polyimide, polyetheretherketone, and polydimethylsiloxane. Cell culture experiments with B35 neuronal cells revealed the al...

JLA Vol:24 Iss:4 (Synthesis of hybrid microgels by coupling of laser ablation and polymerization in aqueous medium)

Authors:
Philipp Nachev
Funktionale und Interaktive Polymere, Institut fu¨r Makromolekulare und Technische Chemie, RWTH Aachen University, Forckenbeckstr. 50, D-52074 Aachen, Germany

Danielle D. van ’T Zand
Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstr. 5-7, D-45141 Essen, Germany

Vincent Coger
Department of Plastic, Hand- and Reconstructive Surgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany

Philipp Wagener
Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universit...

JLA Vol:24 Iss:4 (Direct laser writing-mediated generation of standardized topographies for dental implant surface optimization)

Authors:
Rainer Wittig
Institut fu¨r Lasertechnologien in der Medizin und Messtechnik (ILM) an der Universita¨t Ulm, 89081 Ulm, Germany

Erik Waller
Georg von Freymann
Arbeitsgruppe Optische Technologien und Photonik und Forschungszentrum OPTIMAS, Fachbereich Physik, Technische Universita¨t Kaiserslautern, 67663 Kaiserslautern, Germany

Rudolf Steiner
Institut fu¨r Lasertechnologien in der Medizin und Messtechnik (ILM) an der Universita¨t Ulm, 89081 Ulm, Germany

The functionalization of dental implants, aiming at the improvement of long-term acceptance, is of pivotal interest in dental research. Bone, connectiv...

JLA Vol:24 Iss:4 (In-process measuring procedure for sub-100 nm structures)

Authors:
M. Zimmermann
A. Tausendfreund
S. Patzelt
G. Goch
Bremen Institute for Metrology, Automation and Quality Science (BIMAQ), Linzer Straße 13, 28359 Bremen, Germany

S. Kieß
M. Z. Shaikh
M. Gregoire
S. Simon
Institute of Parallel and Distributed Systems (IPVS), Universita¨tsstraße 38, 70569 Stuttgart, Germany

Fast and nondestructive laser light scattering measurements characterize the quality of surfaces with sub-100 nm structures during the production process. The aim is to detect defective surface structures. The measurement procedure is based on a primary c...

JLA Vol:24 Iss:4 (Femtosecond laser-induced periodic surface structures)

Authors:
J. Bonse
J. Kru¨ger
S. Ho¨hm
A. Rosenfeld
Array

The formation of laser-induced periodic surface structures (LIPSS) in different materials (metals, semiconductors, and dielectrics) upon irradiation with linearly polarized fs-laser pulses (τ ∼ 30–150 fs, λ ∼ 800 nm) in air environment is studied experimentally and theoretically. In metals, predominantly low-spatial-frequency-LIPSS with periods close to the laser wavelength λ are observed perpendicular to the polarization. Under specific irradiation conditions, high-spatial-frequency-LIPSS with sub-100-nm spatial periods (∼λ/10) can be gene...

JLA Vol:24 Iss:4 (Development of functional sub-100 nm structures with 3D two-photon polymerization technique and optical methods for characterization)

Authors:
V. Ferreras Paz
Institut fu¨r Technische Optik, Universita¨t Stuttgart, 70569 Stuttgart, Germany

M. Emons
Institut fu¨r Quantenoptik, Leibniz Universita¨t Hannover, 30167 Hannover, Germany

K. Obata
A. Ovsianikov
S. Peterha¨nsel
K. Frenner
C. Reinhardt
B. Chichkov
U. Morgner
W. Osten
Array

Investigations of two-photon polymerization (TPP) with sub-100 nm in the structuring resolution are presented by using photosensitive sol-gel material. The high photosensitivity of this material allows for TPP using a large variety in lase...