Effects of pump pulse propagation and spatial distribution of bias fields on terahertz generation from photoconductive antennas

2013 ◽  
Vol 114 (4) ◽  
pp. 043108 ◽  
Author(s):  
Rone-Hwa Chou ◽  
Chan-Shan Yang ◽  
Ci-Ling Pan
Keyword(s):  
Spatial Distribution ◽  
Pump Pulse ◽  
Pulse Propagation ◽  
Terahertz Generation ◽  
Photoconductive Antennas

PROBE — Profile Resolution Obtained by Excitation

1978 ◽  
Vol 32 (4) ◽  
pp. 381-388 ◽  
Author(s):  
R. M. Measures
Keyword(s):  
Spatial Distribution ◽  
Spatial Resolution ◽  
Pump Pulse ◽  
Probe Pulse ◽  
Laser Pulses ◽  
Laser Induced Fluorescence ◽  
Line Of Sight ◽  
Theoretical Formulation ◽  
New Approach ◽  
Fluorescence Methods

A new approach for evaluating, with spatial resolution, the line of sight properties of a specific constituent is proposed. This PROBE (profile resolution obtained by excitation) concept involves the use of two counter-propagating laser pulses; a pump pulse to condition the medium and a probe pulse to interrogate the medium where the pulses overlap. In this way, information regarding the spatial distribution of a species is transformed into temporal information in the form of a change in the amplitude of a returned probe pulse. For certain situations the PROBE technique offers several advantages over scattering or laser induced fluorescence methods. A theoretical formulation of the concept clearly indicates the importance of the lifetime of the pumped state.

scholarly journals Plasmon-enhanced LT-GaAs/AlAs heterostructure photoconductive antennas for sub-bandgap terahertz generation

2017 ◽  
Vol 25 (18) ◽  
pp. 22140 ◽  
Author(s):  
Afshin Jooshesh ◽  
Faezeh Fesharaki ◽  
Vahid Bahrami-Yekta ◽  
Mahsa Mahtab ◽  
Thomas Tiedje ◽  
...  
Keyword(s):  
Terahertz Generation ◽  
Photoconductive Antennas ◽  
Lt Gaas
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