Fourier Transform Spectroscopy (FTS) In The Light Of New Developments Such As Passive Heterodyne Spectroscopy And Diode Laser Absorption Spectroscopy

Gerry Wijntjes

doi:10.1117/12.957810

29 October 1979 Fourier Transform Spectroscopy (FTS) In The Light Of New Developments Such As Passive Heterodyne Spectroscopy And Diode Laser Absorption Spectroscopy

Gerry Wijntjes

Author Affiliations +

Proceedings Volume 0191, Multiplex and/or High Throughput Spectroscopy; (1979) https://doi.org/10.1117/12.957810
Event: 23rd Annual Technical Symposium, 1979, San Diego, United States

Abstract

The availability of tunable line sources such as diode lasers in the infrared have lead to the development of two new forms of spectroscopy. The first one is passive heterodyne detection, a form of amplitude detection where the spectrum is scanned by tuning a local oscillator, in this case a diode laser. A second development is using a diode laser as a tunable source to scan the absorption spectrum of a sample with detection by the usual power detector. The capability of the first technique will be compared with spectral discriminators of the classic type using power or direct detection. The second technique will be compared with Fourier Transform absorption spectroscopy using a high temperature blackbody as a source.

Citation Download Citation

Gerry Wijntjes "Fourier Transform Spectroscopy (FTS) In The Light Of New Developments Such As Passive Heterodyne Spectroscopy And Diode Laser Absorption Spectroscopy", Proc. SPIE 0191, Multiplex and/or High Throughput Spectroscopy, (29 October 1979); https://doi.org/10.1117/12.957810

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