Comb-resolved spectroscopy with immersion grating in long-wave infrared

We have developed a dispersive spectrometer by using a compact immersion grating for direct frequency comb spectroscopy in the long-wave infrared region of 8-10 μm for the first time. A frequency resolution of 460 MHz is achieved, which is the highest reported in this wavelength region with a disper...

Full description

Saved in:
Bibliographic Details
Published inOptics express Vol. 27; no. 3; pp. 1911 - 1921
Main Authors Iwakuni, K, Bui, T Q, Niedermeyer, J F, Sukegawa, T, Ye, J
Format Journal Article
LanguageEnglish
Published United States 04.02.2019
Online AccessGet full text

Cover

More Information
Summary:We have developed a dispersive spectrometer by using a compact immersion grating for direct frequency comb spectroscopy in the long-wave infrared region of 8-10 μm for the first time. A frequency resolution of 460 MHz is achieved, which is the highest reported in this wavelength region with a dispersive spectrometer. We also demonstrate individual comb mode-resolved imaging by cavity filtering and apply this to obtain spectra of both simple and complex molecular spectra. These results indicate that the immersion grating spectrometer offers the next advancement for sensitive, high-resolution spectroscopy of transient and large/complex molecules when combined with cavity enhancement and cooling techniques.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.27.001911