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Low-loss germanium strip waveguides on silicon for the mid-infrared.
- Yu-Chi Chang, V. Paeder, L. Hvozdara, J. Hartmann, H. Herzig
- Physics, Medicine
- Optics letters
- 15 July 2012
Mid-infrared photonics in silicon needs low-loss integrated waveguides. While monocrystalline germanium waveguides on silicon have been proposed, experimental realization has not been reported. Here… Expand
Micro-Optics : Elements, Systems And Applications
- H. Herzig
- 26 April 1997
Design of refractive and diffractive micro-optics, H.P. Herzig diffaction theory of microrelief gratings, J. Turunen binary optics fabrication, M.B. Stern direct writing of continuous-relief… Expand
Engineering photonic nanojets.
Photonic Nanojets are highly localized wave fields emerging directly behind dielectric microspheres; if suitably illuminated. In this contribution we reveal how different illumination conditions can… Expand
Review of iterative Fourier-transform algorithms for beam shaping applications
We present a comparison of some of the most used iterative Fourier transform algorithms (IFTA) for the design of continuous and multilevel diffractive optical elements (DOE). Our aim is to provide… Expand
Application of the boundary-element method to the interaction of light with single and coupled metallic nanoparticles.
- C. Rockstuhl, M. Salt, H. Herzig
- Medicine, Physics
- Journal of the Optical Society of America. A…
- 1 October 2003
The boundary-element method is applied to the interaction of light with resonant metallic nanoparticles. At a certain wavelength, excitation of a surface plasmon takes place, which leads to a… Expand
Optimized kinoform structures for highly efficient fan-out elements.
We discuss the realization of highly efficient fan-out elements. Laser-beam writing lithography is available now for fabricating smooth surface relief microstructures. We develop several methods for… Expand
Surface profiles of reflow microlenses under the influence of surface tension and gravity
We present a finite-element method to calculate 3-D surface profiles of refractive microlenses fabricated by melting-resist technology (reflow technique). The geometry of the microlenses can be… Expand
Encoding of efficient diffractive microlenses.
Different coding schemes for diffractive multilevel microlenses are compared. A simple method to code a lens to get the optimum diffraction efficiency is given. Furthermore, a straightforward way to… Expand
Talbot images of wavelength-scale amplitude gratings.
- M. Kim, T. Scharf, C. Menzel, C. Rockstuhl, H. Herzig
- Physics, Medicine
- Optics express
- 27 February 2012
By means of experiment and simulation, we achieve unprecedented insights into the formation of Talbot images to be observed in transmission for light diffracted at wavelength-scale amplitude… Expand
Guided Bloch surface waves on ultrathin polymeric ridges.
We present a direct evidence of Bloch surface waves (BSWs) waveguiding on ultrathin polymeric ridges, supported by near-field measurements. It is demonstrated that near-infrared BSWs sustained by a… Expand