Single-Photon Infrared Imaging with a Silicon Camera Based on Long-Wavelength-Pumping Two-Photon Absorption

2021 ◽  
pp. 1-1
Author(s):  
Jianan Fang ◽  
Yinqi Wang ◽  
E Wu ◽  
Ming Yan ◽  
Kun Huang ◽  
...  
Keyword(s):  
Infrared Imaging ◽  
Single Photon ◽  
Photon Absorption ◽  
Long Wavelength ◽  
Two Photon Absorption ◽  
Two Photon

scholarly journals Determination of 4H-SiC Ionization Rates Using OBIC Based on Two-Photon Absorption

2016 ◽  
Vol 858 ◽  
pp. 245-248 ◽  
Author(s):  
Hassan Hamad ◽  
Christophe Raynaud ◽  
Pascal Bevilacqua ◽  
Sigo Scharnholz ◽  
Bertrand Vergne ◽  
...  
Keyword(s):  
Single Photon ◽  
Green Laser ◽  
Photon Absorption ◽  
Absorption Process ◽  
Field Range ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Avalanche Diodes ◽  
Single Photon Absorption ◽  
Ionization Rates

Optical Beam Induced Current (OBIC) measurements are performed on 4H-SiC avalanche diodes with a very thin and a highly doped active region. A pulsed green laser, with a wavelength of 532 nm, illuminates a reverse biased diode leading to generate electron-hole pairs in the space charge region. Comparison between the 4H-SiC bandgap and the incident photon energy shows that single photon absorption process can be neglected and two-photon absorption process dominates in this case. Ionization rates are then extracted from multiplication curve in a high electric field range (3 to 5 MV.cm–1). Results are in good agreement with previous ones obtained on the same diodes using single photon absorption process.

Transient and steady-state behavior of single and two-photon absorption by microwave driven field

2014 ◽  
Vol 92 (4) ◽  
pp. 284-288
Author(s):  
Seyyed Hossein Asadpour ◽  
H. Rahimpour Soleimani
Keyword(s):  
Steady State ◽  
Microwave Field ◽  
Single Photon ◽  
Photon Absorption ◽  
State Behavior ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Probe Gain ◽  
The One ◽  
Transient And Steady State

In this paper, the effect of microwave field on the transient and steady state response of the four-level inverted Y-type atomic system is investigated. It is found that the properties of transient and steady processes can be affected by microwave field. It is found that the absorption spectrum behaves differentially for single-photon absorption and two-photon absorption. Also it is observed that in the one-photon absorption, the microwave field can lead to the probe gain and for two-photon absorption case, the strong microwave can enhance the absorption.

scholarly journals Suppression of Residual Single-Photon Absorption Relative to Two-Photon Absorption in High Finesse Planar Microcavities

2008 ◽  
Vol 20 (16) ◽  
pp. 1426-1428 ◽  
Author(s):  
Wei-Hua Guo ◽  
John O'Dowd ◽  
Edward Flood ◽  
Tom Quinlan ◽  
Michael Lynch ◽  
...  
Keyword(s):  
Single Photon ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
High Finesse ◽  
Single Photon Absorption
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