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Tunable resolution terahertz dual frequency comb spectrometer. Public Deposited

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https://scholar.colorado.edu/concern/articles/qv33rx287
Abstract
  • Terahertz dual frequency comb spectroscopy (THz-DFCS) yields high spectral resolution without compromising bandwidth. Nonetheless, the resolution of THz-DFCS is usually limited by the laser repetition rate, which is typically between 80 MHz and 1 GHz. In this paper, we demonstrate a new method to achieve sub-repetition rate resolution in THz-DFCS by adaptively modifying the effective laser repetition rate using integrated Mach-Zehnder electro-optic modulators (MZ-EOMs). Our results demonstrate that it is possible to improve the 100 MHz resolution of a terahertz frequency comb by at least 20x (down to 5 MHz) across the terahertz spectrum without compromising the average output power, and to a large extent, its bandwidth. Our approach can augment a wide range of existing THz-DFCS systems to provide a significant and easily adaptable resolution improvement.
Creator
Date Issued
  • 2016-12-26
Academic Affiliation
Journal Title
Journal Issue/Number
  • 26
Journal Volume
  • 24
File Extent
  • 30100-30107
Publisher
Last Modified
  • 2019-12-05
Identifier
  • PubMed ID: 28059288
Resource Type
Rights Statement
DOI
ISSN
  • 1094-4087
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