Applications of supercontinuum sources: Incoherent broadband cavity-enhanced absorption spectroscopy

Author

Aalto, A. ; Genty, Goery ; Toivonen, Juha ; Laurila, Tomi

Author_Institution

Dept. of Phys., Tampere Univ. of Technol., Tampere, Finland

fYear

2013

Firstpage

1

Lastpage

3

Abstract

We study experimentally the application of supercontinuum (SC) sources in incoherent broadband cavity-enhanced absorption spectroscopy (IBB-CEAS). By carefully tailoring the SC spectrum to match the high reflectivity bandwidth of the mirrors, an unprecedented spectral brightness can be achieved at wavelengths where the effective absorption path length exceeds 40 km, making the fiber-based SC an ideal match for the simple and robust IBB-CEAS technique. We demonstrate the potential of SC sources in broadband measurement of weak overtone transitions of carbon dioxide and methane and compare its performances with that of typical superluminescent diode (SLD) source.

Keywords

brightness; carbon compounds; fibre lasers; mirrors; organic compounds; supercontinuum generation; superluminescent diodes; CO₂; IBB-CEAS technique; SC spectrum; SLD; broadband measurement; effective absorption path length; fiber-based SC; high reflectivity bandwidth; incoherent broadband cavity-enhanced absorption spectroscopy; methane; mirrors; spectral brightness; supercontinuum sources; superluminescent diode source; weak overtone transitions; Absorption; Bandwidth; Broadband communication; Cavity resonators; Mirrors; Spectroscopy; Superluminescent diodes; Cavity-enhanced absorption spectroscopy; Nonlinear optics; Supercontinuum generation; fibers;

fLanguage

English

Publisher

ieee

Conference_Titel

Laser Dynamics and Nonlinear Photonics, 2013 Sixth "Rio De La Plata" Workshop on

Conference_Location

Montevideo

Type

conf

DOI

10.1109/LDNP.2013.6777408

Filename

6777408