Asynchronous optical sampling for high-speed characterization of integrated resonant terahertz sensors | Zendy

C. Janke | Zendy; M. Först | Zendy; M. Nagel | Zendy; Heiko G. Kurz | Zendy; A. Bartels | Zendy

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Asynchronous optical sampling for high-speed characterization of integrated resonant terahertz sensors

Author(s) -

C. Janke,

M. Först,

M. Nagel,

Heiko G. Kurz,

A. Bartels

Publication year - 2005

Publication title -

optics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.524

H-Index - 272

eISSN - 1071-2763

pISSN - 0146-9592

DOI - 10.1364/ol.30.001405

Subject(s) - terahertz radiation , femtosecond , optics , materials science , sampling (signal processing) , laser , optoelectronics , characterization (materials science) , asynchronous communication , terahertz spectroscopy and technology , physics , computer science , detector , telecommunications

Two femtosecond Ti:sapphire lasers with slightly different repetition rates near 1 GHz are coupled to implement high-speed asynchronous optical sampling. The application of this technique is successfully demonstrated in the field of terahertz time-domain spectroscopy (TDS). A time delay of 1 ns is scanned at a frequency of 5 kHz without moving mechanical parts. Compared with that of conventional TDS schemes based on lock-in detection and moving mirrors, the readout time of integrated resonant THz sensors is reduced by a factor of 20, opening the way for high-throughput THz sensing in marker-free DNA analysis.

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