Experimental signature of registration noise in pulsed terahertz systems

Netta Cohen*, J. W. Handley, R. D. Boyle, Samuel L. Braunstein, Elizabeth Berry

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (SciVal)

Abstract

This Letter reports results from time domain measurements in a terahertz pulsed imaging system and suggests that a mechanical resetting mechanism in the pump-probe delay stage results in a small but resolvable noise signal. In the setup described here, this effect dominates all other sources of noise such as the background Johnson noise or shot noise, and can hence be isolated and analysed in detail. An analysis of the noise signal is used to estimate the physical limitations of the pump-probe system being employed. A comparison of the results with an analytic prediction allows us to formulate a useful and general signature of registration noise, that should make it easy to detect in any sufficiently narrowband signal.

Original languageEnglish
Pages (from-to)L77-L84
JournalFluctuation and Noise Letters
Volume6
Issue number1
DOIs
Publication statusPublished - Mar 2006
Externally publishedYes

Keywords

  • Noise signature
  • Registration jitter
  • T-rays
  • Terahertz pulsed imaging

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