Towards Broadband Multi-species Trace Gas Detection Using a Mid-infrared Supercontinuum Source

• DOI: 10.1364/cleo_at.2018.ath3o.2
• Publication Date: 2018-05-07T17:02:56Z
• Authors: Qing Pan; Khalil E. Jahromi; M. Ali Abbas; Amir Khodabakhsh; Simona M. Cristescu; Frans J. M. Harren
• Keywords: Supercontinuum; Trace gas; Absorbance; Photon Upconversion

We present mid-infrared trace gas sensing based on a supercontinuum source combined with direct absorption spectroscopy and sum-frequency upconversion, showing broadband detection 10-4 Hz-1/2 noise equivalent absorbance sensitivity.