TeraHertz Emission from InAs Surfaces Excited by Femtosecond Laser Pulses

2007 ◽  
Vol 2 (1) ◽  
pp. 108-114 ◽  
Author(s):  
A. Krotkus ◽  
R. Adomavičius ◽  
G. Molis ◽  
V. L. Malevich
Keyword(s):  
Femtosecond Laser ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Terahertz Emission

Terahertz emission from InSb illuminated by femtosecond laser pulses

2017 ◽  
Vol 50 (5) ◽  
pp. 055101 ◽  
Author(s):  
A Arlauskas ◽  
L Subačius ◽  
A Krotkus ◽  
V L Malevich
Keyword(s):  
Femtosecond Laser ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Terahertz Emission

Terahertz emission from GaInAs p-i-n diodes photoexcited by femtosecond laser pulses

2016 ◽  
Vol 55 (4) ◽  
Author(s):  
Ignas Nevinskas ◽  
Sandra Stanionytė ◽  
Vaidas Pačebutas ◽  
Arūnas Krotkus
Keyword(s):  
Femtosecond Laser ◽  
Crystallographic Orientation ◽  
Azimuthal Angle ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Voltage Source ◽  
Terahertz Emission ◽  
External Voltage ◽  
Angle Dependence ◽  
Lattice Matched

Lattice-matched GaInAs p-i-n diodes of different i-region thicknesses have been MBE grown on n-type InP (100) and (111) crystallographic orientation substrates. It has been found that terahertz emission from such structures when illuminated with femtosecond laser pulses can be more efficient than that from the known to date best surface terahertz emitter (111) p-InAs. The explanation of the terahertz generation mechanism from p-i-n diodes is based on ultrafast photocurrent effects. Anisotropic transient photocurrents causing the 3ϕ azimuthal angle dependence are observed in the sample on (111) substrate. These p-i-n structures allow covering a technologically important 1.55 μm range and may provide controllability and compactness of a THzTDS system when biased with an external voltage source.

Bi-directional terahertz emission from gold-coated nanogratings by excitation via femtosecond laser pulses

2011 ◽  
Vol 102 (3) ◽  
pp. 551-554 ◽  
Author(s):  
F. Garwe ◽  
A. Schmidt ◽  
G. Zieger ◽  
T. May ◽  
K. Wynne ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Terahertz Emission
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