Multichannel terahertz time-domain spectroscopy system at 1030 nm excitation wavelength.
Opt Express
; 22(11): 12982-93, 2014 Jun 02.
Article
em En
| MEDLINE
| ID: mdl-24921495
ABSTRACT
We present Terahertz (THz) imaging with a 1D multichannel time-domain spectroscopy (TDS) system which operates with a photoconductive array of 15 detection channels excited by a 1030 nm femtosecond fiber laser. The emitter and detector are photoconductive antennas based on InGaAs/InAlAs multi-layer heterostructures (MLHS). We characterized the THz optics and the resolution of the system. The performance is demonstrated by the multichannel imaging of two samples. A simultaneous measurement of 15 THz pulses with a pixel pitch of 1 mm increases the measurement speed of the TDS system by factor 15.
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01-internacional
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MEDLINE
Idioma:
En
Revista:
Opt Express
Ano de publicação:
2014
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Article