Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/327306
Type: Artigo
Title: Tunable Resolution Terahertz Dual Frequency Comb Spectrometer
Author: Vieira
Francisco S.; Cruz
Flavio C.; Plusquellic
David F.; Diddams
Scott A.
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. (C) 2016 Optical Society of America
Editor: Optical Soc Amer
Washington
Rights: fechado
Identifier DOI: 10.1364/OE.24.030100
Address: https://osapublishing.ez88.periodicos.capes.gov.br/oe/abstract.cfm?uri=oe-24-26-30100
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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