OA-ICOS (Off-Axis Integrated Cavity Output Spectroscopy)
- 측정 원리
- Scan laser → Transmission spectrum
- Turn off laser → Cavity ringdown(effective pathlength)
- Calculate absorption spectrum
- Run ICOS algorithms : Spectral Shape Fitting (IGOR Software)
- 적절한 알고리즘의 사용은 mixture내의 다중 성분의 가스들의 정량화가 가능하게 함
- Single laser 설비로 다중 성분을 동시에 측정 가능하도록 함
- No scrubbing or pretreatment required
- Analyze complex spectra by measuring basis set spectra and convoluting
- Low pressure of ICOS analyzer is also a key enabler for higher accuracy