Results 61 to 70 of about 2,784,941 (298)

Noise and aliases in off-axis and phase-shifting holography [PDF]

, 2008
We have compared the respective efficiencies of off-axis and phase-shifting holography in terms of noise and aliases removal. The comparison is made by analyzing holograms of an USAF target backlit with laser illumination, recorded with a charge-coupled ...
Ansari, Colomb, Creath, Cuche, Cuche, Gabor, Goodmann, Gross, Guo, Kato, Kreis, LeClerc, Leith, Marquet, Massatsch, Massig, Nomura, Pu, Schnars, Schnars, Tamano, Yamaguchi, Yamaguchi, Yamaguchi, Yamaguchi, Zhang, Zhang   +26 more
core   +2 more sources

Super-Bandwidth Two-Step Phase-Shifting Off-Axis Digital Holography by Optimizing Two-Dimensional Spatial Frequency Sampling Scheme

IEEE Access, 2019
The presence of the auto correlation and twin cross correlation noises restrict the available spatial bandwidth of the holographic microscopy to much less than the available bandwidth of the digital sensor.
Behnam Tayebi, Jeong Hoon Park, Jae-Ho Han   +2 more
doaj   +1 more source

Two-Dimensional Polarization Holographic Gratings in Azopolymer Thin Films: Polarization Properties in the Presence or Absence of Surface Relief

Photonics, 2023
During polarization holographic recording in azopolymer thin films, usually together with the volume anisotropic grating, a surface relief grating (SRG) is also formed.
Georgi Mateev, Lian Nedelchev, Ludmila Nikolova, Branimir Ivanov, Velichka Strijkova, Elena Stoykova, Kihong Choi, Joongki Park, Dimana Nazarova   +8 more
doaj   +1 more source

Digital phase conjugation of second harmonic radiation emitted by nanoparticles in turbid media [PDF]

, 2010
We demonstrate focusing coherent light on a nanoparticle through turbid media based on digital optical phase conjugation of second harmonic generation (SHG) field from the nanoparticle.
Grange, Rachel, Hsieh, Chia-Lung, Psaltis, Demetri, Pu, Ye   +3 more
core   +2 more sources

Resolution Enhancement of Geometric Phase Self-Interference Incoherent Digital Holography Using Synthetic Aperture

Photonics
Incoherent digital holography is a promising solution for acquiring three-dimensional information in the form of interference without a laser. Self-interference is the principal phenomenon of incoherent holography which splits the incident light wave ...
Youngrok Kim, KiHong Choi, Keehoon Hong, Sung-Wook Min   +3 more
doaj   +1 more source

Measurement of cavitation in a sliding bearing using digital holography [PDF]

, 2014
This paper was presented at the 4th Micro and Nano Flows Conference (MNF2014), which was held at University College, London, UK. The conference was organised by Brunel University and supported by the Italian Union of Thermofluiddynamics, IPEM, the ...
4th Micro and Nano Flows Conference (MNF2014), Arevalo, L, Coupland, J, Tang, T   +3 more
core  

Simultaneous reconstruction of phase and amplitude contrast from a single holographic record [PDF]

, 2009
We present a reconstruction technique for simultaneous retrieval of absorption and phase shifting properties of an object recorded by in-line holography.
Barton, Barton, Cuche, Fink, Fink, Gabor, Hans-Werner Fink, Huang, Matsumoto, Matsumoto, Matsumoto, Pedrini, Tatiana Latychevskaia, Tong, Yamazaki, Zhang, Zhang, Zhang   +17 more
core   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source

Superpixel-based spatial amplitude and phase modulation using a digital micromirror device [PDF]

, 2014
We present a superpixel method for full spatial phase and amplitude control of a light beam using a digital micromirror device (DMD) combined with a spatial filter.
Bertolotti, Jacopo, Goorden, Sebastianus A., Mosk, Allard P.   +2 more
core   +3 more sources

Single-shot wavelength-multiplexed digital holography for 3D fluorescent microscopy and other imaging modalities

, 2020
We propose a holographic technique by which multiwavelength three-dimensional spatial information is obtained with both a single-shot exposure of a monochrome image sensor and an in-line holographic multiplexing scheme.
T. Tahara, A. Ishii, T. Ito, Y. Ichihashi, R. Oi   +4 more
semanticscholar   +1 more source