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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
- Language
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tunableResolutionTerahertzDualFrequencyCombSpectrometer.pdf | 2019-12-05 | Public | Download |