Topics in this Issue
Images of atmospheric ice crystals, reconstructed from digital holograms. The holograms were obtained at the High Altitude Research Station "Jungfraujoch," located 3.5km a.s.l. in the Swiss Alps. Reconstructions based on the hologram intensity alone are troubled by a spurious "twin image" (left). Recovering the hologram's phase distribution using the cascaded adaptive mask phase retrieval algorithm allows for twin image removal (right), in some cases revealing otherwise unobservable structural details (top right). The lower images show a bundle (rosette) of ice columns with dendritic endplates. The holograms are recorded as 8 bit grayscale images using laser light at 532 nm. Here, the reconstructions are shown in false color and the top images are inverted for better display. For details see the paper by Raupach, pp. 287-301.
- May 02 2013 : On-site Asbestos Detector Offers Promise of Better Workplace Safety - Asbestos was once called a miracle material because of its toughness... more
- Apr 29 2013 : Now available for conference papers! A PDF of the poster presentation has been linked to a select number of poster session papers. Those papers with an accompanying poster presentation PDF will be denoted by a multimedia icon.
- Apr 24 2013 : New LED Streetlight Design Curbs Light Pollution - Recent innovations in light emitting diodes (LEDs) have improved the... more
- Apr 19 2013 : Optics Letters' page limit is increasing to 4 pages, effective for new submissions beginning on 1 May 2013.
- Phase retrieval algorithms: a personal tour [Invited]
- Cylindrical lenses—focusing and imaging: a review...
- Imaging systems and applications
- Toward a super imaging system [Invited]
- 50 years of optics research [Invited]
- Advances in three-dimensional integral imaging: sensing,...
- Optical properties of the metals Al, Co, Cu, Au, Fe, Pb,...
- Precision absolute positional measurement of laser beams
- Phase retrieval using nonlinear diversity
- Digital holography and 3D imaging: introduction to feature...