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Proceedings Paper

Spatio-temporal control of laser beams with thin film shapers
Author(s): Ruediger Grunwald; Uwe J. Neumann; Uwe Griebner; Volker Kebbel; Hans-Joachim Kuehn
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Paper Abstract

Recent progress in laser beam shaping and characterization with novel-type thin-film microoptics is presented. These novel microoptical devices offer several distinctive advantages, such as a short optical path, small angles, low roughness or multilayer design. These features allow shaping of laser beams at extreme parameters with respect to spectrum, angular distribution, intensity, or pulse duration. Particular emphasis is laid on (i) hybrid components for high-power diode laser collimation, (ii) spatio-temporal shaping of localized few-cycle wavepackets, and (iii) microoptics for the vacuum ultraviolet. For the fabrication of thin-film structures, vapor deposition with shading masks was used. To improve the efficiency of diode laser collimation, spatially variable AR coatings and integrated arrays of cylindrical microlenses were developed. Arrays of Bessel-like beams were generated from sub-10-fs Ti:sapphire laser pulses by refractive and reflective microaxicons. We further demonstrated the use of microaxicon arrays for spatially resolved autocorrelation of ultrashort pulses. Deposition and etching transfer of flat VUV-structures was studied. Finally, the generation of single-maximum nondiffracting beams by self-apodizing system design is discussed.

Paper Details

Date Published: 1 June 2004
PDF: 11 pages
Proc. SPIE 5333, Laser Resonators and Beam Control VII, (1 June 2004);
Show Author Affiliations
Ruediger Grunwald, Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy (Germany)
Uwe J. Neumann, Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy (Germany)
Uwe Griebner, Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy (Germany)
Volker Kebbel, Bremen Institute for Applied Beam Technology (Germany)
Hans-Joachim Kuehn, Quarterwave GmbH (Germany)

Published in SPIE Proceedings Vol. 5333:
Laser Resonators and Beam Control VII
Alexis V. Kudryashov, Editor(s)

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