Accession Number : AD1046010

Title :   Broadband integrated mid infrared light sources as enabling technology for point of care mid-infrared spectroscopy

Descriptive Note : Technical Report,01 Aug 2016,31 Jul 2017

Corporate Author : MACQUARIE UNIVERSITY Sydney Australia

Personal Author(s) : Fuerbach,Alex

Full Text :

Report Date : 20 Aug 2017

Pagination or Media Count : 8

Abstract : This 1-year pilot project investigated the possibilities to transform recently developed narrow-linewidth, continuous-wave (cw) ZBLAN chip lasers into robust and miniaturized broadband light sources for sensing applications. Utilizing nanomaterials-based saturable absorbers, it was demonstrated the possibility of passively q-switched as well as passively q-switched mode-locked (QML) operation of those chip lasers. Further, a novel nematic liquid crystal cell was successfully employed as an active q-switching element in the same type of chip lasers. The short laser pulses that were generated in these experiments were finally launched into a highly nonlinear optical fiber for nonlinear frequency broadening and a maximum spectral bandwidth of close to 100 nm was obtained in the important 2 m region of the spectrum. Numerical simulations reveal that further spectral broadening to a full mid-infrared super continuum is feasible.

Descriptors :   Infrared spectroscopy , Infrared lasers , raman lasers , nanomaterials

Subject Categories : Atomic and Molecular Physics and Spectroscopy
      Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE