Spotlight on Optics

Highlighted Articles from Optica Publishing Group Journals

Panelist: Khare

Spotlight Summary by Kedar Khare
- Incoherent digital holographic adaptive optics
- Fresnel incoherent digital holography is a recent development in the ever-expanding area of digital holography. While holographic imaging is usually associated with spatially coherent illumination such as laser light,...
- Appl. Opt. 52(1) A117-A130 (2013) View: Abstract | HTML | PDF [1]

Spotlight Summary by Kedar Khare
- Tracking of multiple objects in unknown background using Bayesian estimation in 3D space
- Automated tracking of objects in an image scenery is an important practical problem for remote sensing, surveillance, security imaging, robotic vision and related areas. While it may seem straightforward to track an...
- J. Opt. Soc. Am. A 28(9) 1935-1940 (2011) View: Abstract | HTML | PDF

Spotlight Summary by Kedar Khare
- Open-geometry Fourier modal method: modeling nanophotonic structures in infinite domains
- Nanophotonics refers to the study of interaction of nano-scale material structures with light. Compared to the usual bulk materials, the interaction of light with sub-wavelength structures offers several new properties...
- J. Opt. Soc. Am. A 33(7) 1298-1306 (2016) View: Abstract | HTML | PDF

Spotlight Summary by Kedar Khare
- Imaging sparse metallic cylinders through a local shape function Bayesian compressive sensing approach
- The problem of locating sparsely spaced metallic objects illuminated by electromagnetic radiation has many important applications in geophysics, localization of tunnels or pipelines, fault detection in metallic grids,...
- J. Opt. Soc. Am. A 30(6) 1261-1272 (2013) View: Abstract | HTML | PDF

Spotlight Summary by Kedar Khare
- Short temporal coherence digital holography with a femtosecond frequency comb laser for multi-level optical sectioning
- Optical sectioning refers to imaging of slices of a 3D sample along its depth dimension by optical means as opposed to cutting the sample into thin slices and imaging the individual slices using some imaging system...
- Opt. Express 20(7) 7237-7242 (2012) View: Abstract | HTML | PDF

Spotlight Summary by Kedar Khare
- Holographic video at 40 frames per second for 4-million object points
- The development and commercial availability of specialized high-speed digital processing hardware and the progress in spatial light modulator (SLM) technology have brought 3D displays for high-resolution video scenery...
- Opt. Express 19(16) 15205-15211 (2011) View: Abstract | HTML | PDF

Spotlight Summary by Kedar Khare
- On the single point resolution of on-axis digital holography
- Digital holography (DH) as an imaging modality has evolved and become increasingly popular over the past couple of decades, with improvements in digital array detectors (e.g., CCD arrays) and the simultaneous...
- J. Opt. Soc. Am. A 27(8) 1856-1862 (2010) View: Abstract | HTML | PDF

Spotlight Summary by Kedar Khare
- Complete polarization and phase control for focus-shaping in high-NA microscopy
- The numerical aperture (NA) of a microscope objective nominally represents the angular range of light rays accepted at its pupil. High NA objectives are particularly useful for tight focusing of beams and have many...
- Opt. Express 20(13) 14015-14029 (2012) View: Abstract | HTML | PDF

Spotlight Summary by Kedar Khare
- Digital holographic interferometry with CO2 lasers and diffuse illumination applied to large space reflector metrology [Invited]
- Manufacturing and testing of large (1-4 m diameter) reflectors is an important technological problem for space agencies. Traditional optical testing methods typically use laser-based metrology where the phase difference...
- Appl. Opt. 52(1) A102-A116 (2013) View: Abstract | HTML | PDF