Two Dimensional Interferometric Photon Counting Observations with the 6m Telescope
نویسندگان
چکیده
منابع مشابه
Two-Photon Counting interferometry
Two-photon counting (TPC) interferometry has been realized by measuring the electrical current due to two-photon absorption in the space charge layer of a semiconductor detector located at the output port of an interferometer. We apply this technique to study the correlation properties of twin beams issued from parametric fluorescence. We describe in details how the different second-order corre...
متن کاملDiffraction-limited 76mas speckle masking observations of the core of NGC 1068 with the SAO 6m telescope
We present the first K-band bispectrum speckle interferometry of NGC1068 with an angular resolution of 76mas (∼ 5.5 pc). This angular resolution allows us to attribute the measured flux to only one of the nuclear sources seen at radio wavelengths. The observed decreasing visibility function suggests that the dominant central core is probably not an unresolved point source, but slightly resolved...
متن کاملA Review of the Three-dimensional Field Displacement Retrieval Methods Using Interferometric Synthetic Aperture Radar Observations (InSAR) With Emphasis on the Precision of Each of these Methods
Interferometric Synthetic Aperture Radar (InSAR) technology provides a useful tool for quantitatively measuring the deformation of the earth, influenced by natural factors (earthquake, subsidence, and landslide) and human factors (construction of structures, drilling, and the overexploitation of underground water aquifers). In this context, time-series analysis of radar images allows the monito...
متن کاملFour-dimensional multiphoton microscopy with time-correlated single-photon counting.
We report on the implementation of fluorescence-lifetime imaging in multiphoton excitation microscopy that uses PC-compatible modules for time-correlated single-photon counting. Four-dimensional data stacks are produced with each pixel featuring fluorescence-decay curves that consist of as many as 4096 bins. Fluorescence lifetime(s) and their amplitude(s) are extracted by statistical methods at...
متن کاملThree-Dimensional Photon Counting Imaging with Axially Distributed Sensing
In this paper, we review three-dimensional (3D) photon counting imaging with axially distributed sensing. Under severely photon-starved conditions, we have proposed various imaging and algorithmic approaches to reconstruct a scene in 3D, which are not possible by using conventional imaging system due to lack of sufficient number of photons. In this paper, we present an overview of optical sensi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 1982
ISSN: 0252-9211
DOI: 10.1017/s0252921100083573