3D camera based on linear-mode gain-modulated avalanche photodiodes

Author(s):  
O. Shcherbakova ◽  
L. Pancheri ◽  
Gian-Franco Dalla Betta ◽  
N. Massari ◽  
D. Stoppa
2014 ◽  
Vol 87 ◽  
pp. 728-731 ◽  
Author(s):  
E. Vilella ◽  
A. Vilà ◽  
F. Palacio ◽  
M. López ◽  
A. Diéguez

Author(s):  
Nicholas J. D. Martinez ◽  
Christopher T. DeRose ◽  
Reinhard W. Brock ◽  
Andrew L. Starbuck ◽  
Andrew T. Pomerene ◽  
...  

2020 ◽  
Vol 500 (4) ◽  
pp. 5630-5638
Author(s):  
Junghwan Oh ◽  
Jan Wagner ◽  
Sascha Trippe ◽  
Taeseok Lee ◽  
Bangwon Lee ◽  
...  

ABSTRACT Optical intensity interferometry, developed in the 1950s, is a simple and inexpensive method for achieving angular resolutions on microarcsecond scales. Its low sensitivity has limited intensity interferometric observations to bright stars so far. Substantial improvements are possible by using avalanche photodiodes (APDs) as light detectors. Several recent experiments used APDs in single-photon detection mode; however, these either provide low electronic bandwidths (few MHz) or require very narrow optical bandpasses. We present here the results of laboratory measurements with a prototype astronomical intensity interferometer using two APDs observing an artificial star in continuous (‘linear’) detection mode with an electronic bandwidth of 100 MHz. We find a photon–photon correlation of about 10−6, as expected from the ratio of the coherence times of the light source and the detectors. In a configuration where both detectors are on the optical axis (zero baseline), we achieve a signal-to-noise ratio of ∼2700 after 10 min of integration. When measuring the correlation as a function of baseline, we find a Gaussian correlation profile with a standard deviation corresponding to an angular half-width of the artificial star of 0.55 arcsec, in agreement with the estimate by the manufacturer. Our results demonstrate the possibility to construct large astronomical intensity interferometers using linear-mode APDs.


2015 ◽  
Vol 40 (19) ◽  
pp. 4400 ◽  
Author(s):  
R. Enne ◽  
B. Steindl ◽  
H. Zimmermann

2016 ◽  
Vol 24 (17) ◽  
pp. 19072 ◽  
Author(s):  
Nicholas J. D. Martinez ◽  
Christopher T. Derose ◽  
Reinhard W. Brock ◽  
Andrew L. Starbuck ◽  
Andrew T. Pomerene ◽  
...  

2006 ◽  
Vol 527-529 ◽  
pp. 1461-1464 ◽  
Author(s):  
Feng Yan ◽  
Xiao Bin Xin ◽  
Petre Alexandrov ◽  
Carl M Stahle ◽  
Bing Guan ◽  
...  

A variety of silicon carbide (SiC) detectors have been developed to study their sensitivity, including Schottky photodiodes, p-i-n photodiodes, avalanche photodiodes (APDs), and single photon-counting APDs. Due to the very wide bandgap and thus extremely low leakage current, SiC photo-detectors show excellent sensitivity. The specific detectivity, D*, of SiC photodiodes are many orders of magnitude higher than the D* of other solid state detectors, and for the first time, comparable to that of photomultiplier tubes (PMTs). SiC APDs have also been fabricated to pursue the ultimate sensitivity. By operating the SiC APDs at a linear mode gain over 106, single photoncounting avalanche photodiodes (SPADs) in UV have been demonstrated.


Sign in / Sign up

Export Citation Format

Share Document