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Proceedings Paper

Investigating temperature effects on the spectral lines of blue laser diodes for monitoring NO2 gas pollution
Author(s): Khaled Gasmi; Watheq Al-Basheer; Abdulaziz Aljalal
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Paper Abstract

Temperature effects on the spectral lines of two Fabry-Perot GaN-based blue laser diodes obtained from Toptica and Roithner Laser Tech are experimentally investigated over the temperature range 5 °C to 60 °C in steps of 0.5 °C. A high resolution monochromator SPEX 1403 with a nominal resolution of 0.003 nm is used in this study. A detailed comparison on the number of modes, mode spacing, emission range and change of emission wavelength per degree Celsius will be presented in this paper. The results of this comparison are used to investigate the suitability of the employment of these laser diodes in open-path detection of NO2 gas pollution.

Paper Details

Date Published: 5 May 2015
PDF: 8 pages
Proc. SPIE 9506, Optical Sensors 2015, 950628 (5 May 2015); doi: 10.1117/12.2179135
Show Author Affiliations
Khaled Gasmi, King Fahd Univ. of Petroleum and Minerals (Saudi Arabia)
Watheq Al-Basheer, King Fahd Univ. of Petroleum and Minerals (Saudi Arabia)
Abdulaziz Aljalal, King Fahd Univ. of Petroleum and Minerals (Saudi Arabia)


Published in SPIE Proceedings Vol. 9506:
Optical Sensors 2015
Francesco Baldini; Jiri Homola; Robert A. Lieberman, Editor(s)

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