Stability of widely tuneable, continuous wave external-cavity quantum cascade laser for absorption spectroscopy

• Main Authors: Kasyutich, Vasili L., Raja Ibrahim, Raja Kamarulzaman, Martin, Philip A.
• Format: Article
• Published: Elsevier B.V. 2010
• Subjects: QC Physics
• Online Access: http://eprints.utm.my/id/eprint/26648/; http://dx.doi.org/10.1016/j.infrared.2010.07.004

The performance of widely tuneable, continuous wave (cw) external-cavity quantum cascade laser (EC-QCL) has been evaluated for direct absorption spectroscopy measurements of nitric oxide (NO) in the wavenumber range 1872-1958 cm-1 and with a 13.5 cm long optical cell. In order to reduce the absorpti...