Nondispersive and multichannel analyzers based on mid-IR LEDs and arrays

Jouko Malinen; Tapio Hannula; Nonna V. Zotova; Sergey A. Karandashev; I. I. Markov; Boris A. Matveev; Nikolai M. Stus; Georgii N. Talalakin

doi:10.1117/12.166278

31 December 1993 Nondispersive and multichannel analyzers based on mid-IR LEDs and arrays

Jouko Malinen, Tapio Hannula, Nonna V. Zotova, Sergey A. Karandashev, I. I. Markov, Boris A. Matveev, Nikolai M. Stus, Georgii N. Talalakin

Author Affiliations +

Proceedings Volume 2069, Optical Methods for Chemical Process Control; (1993) https://doi.org/10.1117/12.166278
Event: Optical Tools for Manufacturing and Advanced Automation, 1993, Boston, MA, United States

Abstract

This paper briefly describes the fabrication of infrared light emitting diodes by liquid phase epitaxy including both InGaAs LEDs for emission wavelengths from 2.5 to 3.8 micrometers and InAsSbP for wavelengths from 3.8 to 4.7 micrometers . Some of the first applications of these LEDs in spectroscopic instrumentation are described together with the main instrument characteristics. Nondispersive analyzers have been developed for CH₄ and CO detection utilizing LED sources emitting at 3.3 and 4.7 micrometers , respectively. A novel infrared spectrometer construction has been developed based on a linear LED array emitting at 3.3 micrometers and a fixed grating monochromator. This miniature construction can be used as an electrically scanned spectrometer module in future IR analyzers for portable and process on- line applications.

Citation Download Citation

Jouko Malinen, Tapio Hannula, Nonna V. Zotova, Sergey A. Karandashev, I. I. Markov, Boris A. Matveev, Nikolai M. Stus, and Georgii N. Talalakin "Nondispersive and multichannel analyzers based on mid-IR LEDs and arrays", Proc. SPIE 2069, Optical Methods for Chemical Process Control, (31 December 1993); https://doi.org/10.1117/12.166278

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