A calibration method for broad-bandwidth cavity enhanced absorption spectroscopy performed with supercontinuum radiation |
| |
| Authors: | T Laurila I S Burns J Hult J H Miller C F Kaminski |
| |
| Institution: | (1) Institute of Optics and Electronics, Chinese Academy of Sciences, P.O. Box 350, Shuangliu, Chengdu, 610209, P.R. China;(2) Graduate School of the Chinese Academy of Sciences, Beijing, 100039, P.R. China; |
| |
| Abstract: | An efficient calibration method has been developed for broad-bandwidth cavity enhanced absorption spectroscopy. The calibration
is performed using phase shift cavity ring-down spectroscopy, which is conveniently implemented through use of an acousto-optic
tunable filter (AOTF). The AOTF permits a narrowband portion of the SC spectrum to be scanned over the full high-reflectivity
bandwidth of the cavity mirrors. After calibration the AOTF is switched off and broad-bandwidth CEAS can be performed with
the same light source without any loss of alignment to the set-up. We demonstrate the merits of the method by probing transitions
of oxygen molecules O2 and collisional pairs of oxygen molecules (O2)2 in the visible spectral range. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
