Abstract

There are various potential sources of systematic error in tunable-diode-laser absorption measurements. In this paper, we discuss two such sources that are associated with multimode lasing. The first is caused by secondary modes which are passed by a monochromator and are absorbed by lines not intentionally being studied. In the second source of error, different spatial modes may appear in different arms of a double-beam system. Both types of errors can give rise to rather dramatic systematic errors in frequency and concentration calibrations.

Absolute distance measurement by wavelength shift interferometry with a laser diode: some systematic error sources

Hisao Kikuta, Koichi Iwata, and Ryo Nagata
Appl. Opt. 26(9) 1654-1660 (1987)

Evaluation of systematic errors for the continuous-wave NO₂ differential absorption lidar employing a multimode laser diode

Yuan Cheng, Zhen Zhang, Zheng Kong, Chenguang Yang, Zhenfeng Gong, Kun Liu, and Liang Mei
Appl. Opt. 59(29) 9087-9097 (2020)

Digital wave-front measuring interferometry: some systematic error sources

J. Schwider, R. Burow, K.-E. Elssner, J. Grzanna, R. Spolaczyk, and K. Merkel
Appl. Opt. 22(21) 3421-3432 (1983)

Application of tunable diode laser absorption for trace stratospheric measurements of HCl: laboratory results

Alan Fried, Robert Sams, and Walter W. Berg
Appl. Opt. 23(11) 1867-1880 (1984)

Effect of noise-induced wavelength fluctuation in tunable diode lasers on narrow-linewidth absorption measurements

Yedhu Krishna, Sean O’Byrne, Kannan Munuswamy, and Gopalan Jagadeesh
Appl. Opt. 57(17) 4943-4949 (2018)