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High signal to noise ratio THz spectroscopy with ASOPS and signal processing schemes for mapping and controlling molecular and bulk relaxation processes

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Hadjiloucas, S., Walker, G.C. , Bowen, J.W., Becerra, V.M., Zafiropoulos, A. and Galvão, R.K.H. (2009) High signal to noise ratio THz spectroscopy with ASOPS and signal processing schemes for mapping and controlling molecular and bulk relaxation processes. Journal of Physics Conference Series, 183. 012003. ISSN 1742-6588

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To link to this article DOI: 10.1088/1742-6596/183/1/012003

Abstract/Summary

Asynchronous Optical Sampling has the potential to improve signal to noise ratio in THz transient sperctrometry. The design of an inexpensive control scheme for synchronising two femtosecond pulse frequency comb generators at an offset frequency of 20 kHz is discussed. The suitability of a range of signal processing schemes adopted from the Systems Identification and Control Theory community for further processing recorded THz transients in the time and frequency domain are outlined. Finally, possibilities for femtosecond pulse shaping using genetic algorithms are mentioned.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Science > School of Systems Engineering
ID Code:15250
Additional Information:Dielectrics 2009: Measurement Analysis and Applications, 40th Anniversary Meeting
Publisher:Institute of Physics

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