DocumentCode :
1516393
Title :
Hybrid Continuous-Wave Demodulating Multipixel Terahertz Imaging Systems
Author :
Friederich, Fabian ; Spickermann, Gunnar ; Roggenbuck, Axel ; Deninger, Anselm ; Weg, Christian Am ; Von Spiegel, Wolff ; Lison, Frank ; Bolívar, Peter Haring ; Roskos, Hartmut G.
Author_Institution :
Phys. Inst., Goethe Univ., Frankfurt, Germany
Volume :
58
Issue :
7
fYear :
2010
fDate :
7/1/2010 12:00:00 AM
Firstpage :
2022
Lastpage :
2026
Abstract :
We present an electrooptic (EO) terahertz imaging technique providing a demodulating detector array for phase-sensitive multipixel terahertz detection. The terahertz radiation from a quartz-stabilized microelectronic emitter is mixed with the synchronized laser beat signal of a continuous-wave distributed-feedback diode laser pair. A fast laser current control loop provides stable phase locking between the terahertz emitter and the laser difference frequency, whereby a demodulating near-infrared photonic-mixer-device camera is used for depth-resolving EO terahertz imaging. Alternatively, a femtosecond laser is used for the EO read-out.
Keywords :
distributed feedback lasers; electro-optical devices; semiconductor lasers; terahertz wave imaging; demodulating detector array; demodulating multipixel; distributed-feedback diode laser pair; electrooptic terahertz imaging; femtosecond laser; hybrid continuous-wave; synchronized laser beat signal; terahertz imaging systems; terahertz radiation; Demodulating detector array; electrooptic (EO) terahertz detection; laser synchronization; photonic-mixer device; terahertz imaging;
fLanguage :
English
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9480
Type :
jour
DOI :
10.1109/TMTT.2010.2050390
Filename :
5484701
Link To Document :
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