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Title: Broadband Absorption Engineering to Enhance Light Absorption in Monolayer MoS 2
Award ID(s):
1352579 1428184
PAR ID:
10017670
Author(s) / Creator(s):
; ;
Date Published:
Journal Name:
ACS Photonics
Volume:
3
Issue:
5
ISSN:
2330-4022
Page Range / eLocation ID:
853 to 862
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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  1. A modification of focused laser differential interferometry (FLDI) is demonstrated with an infrared tunable diode laser (TDL) to achieve simultaneous absorption spectroscopy (AS) measurements. Measurements from this absorbing-FLDI (A-FLDI) are shown for a Hencken burner plume. Initial comparison measurements are recorded using TDLAS and an electrical hygrometer. Raw voltage and estimated absorbance measurements illustrate that the technique detects five distinct absorbance peaks of the methane–air flame while retaining the expected behavior of typical FLDI. This modification furthers efforts to enable FLDI to conduct analysis of the pressures, temperatures, and molecular densities of flows. It also explores the potential for reducing path-integration (PI) effects in absorption spectroscopy and potentially enabling spatially and temporally resolved local flow measurements. Reductions in PI length as high as 82%–84% are observed. 
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