Multi-pixel continuous-wave THz-imaging by electro-optic sampling using a photonic-mixer-device camera

Author

Friederich, Fabian ; Spickermann, Gunnar ; Bolívar, Peter Haring ; Löffler, Torsten ; Roskos, Hartmut G.

Author_Institution

Phys. Inst., Goethe Univ. Frankfurt am Main, Frankfurt am Main, Germany

fYear

2009

fDate

14-19 June 2009

Firstpage

1

Lastpage

1

Abstract

We present a new approach, in which a time-of-flight (TOF) camera is used instead of a conventional CCD camera. The TOF camera is based on photonic-mixer-device (PMD) technology. Every pixel acts as a lock-in detector which allows measuring both amplitude and phase of a modulated light signal simultaneously, while suppressing the background light. Consequently, high-resolution images with low THz field amplitudes can be obtained within seconds. This technique measures both the amplitude and phase, and hence can be used in coherent imaging applications.

Keywords

electro-optical modulation; image sensors; optical variables measurement; phase measurement; terahertz wave detectors; terahertz wave imaging; TOF camera; coherent imaging; electro-optic detection; electro-optic sampling; light signal modulation; lock-in detector; multipixel continuous-wave THz-imaging; photonic-mixer-device camera; time-of-flight camera; Amplitude modulation; Cameras; Charge coupled devices; Charge-coupled image sensors; Optical modulation; Phase detection; Phase measurement; Phase modulation; Photonics; Sampling methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on

Conference_Location

Munich

Print_ISBN

978-1-4244-4079-5

Electronic_ISBN

978-1-4244-4080-1

Type

conf

DOI

10.1109/CLEOE-EQEC.2009.5191924

Filename

5191924