Abstract

Combustion control requires visible photodetectors to sense the CH*CL emission at 430nm that combined with a visible–blind UV photodetector allows us to obtain the OH*CH* ratio. UV–visible P-InGaN∕GaN multiple quantum well-N photodiodes with 1518mm2 areas were fabricated to conduct OH*(308nm) and CH*CL detection without external filters. Bandpass detectors at 230390nm and 360450nm presented linear responses over five decades and rejection ratios >103 at 430 and 308nm, respectively. A full optical sensor system was built and detectors operated at 120°C in a combustion chamber, showing linear responses within the dynamic range, maximum signal-to-noise ratios of 103 and response times of <1s. An exponential association dependence between the optical OH*CH*CL signals and the gas∕air ratios was found.

© 2006 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Photodiode-based sensor for flame sensing and combustion-process monitoring

Luis Arias, Sergio Torres, Daniel Sbarbaro, and Oscar Farias
Appl. Opt. 47(29) 5541-5549 (2008)

Multispecies in situ monitoring of a static internal combustion engine by near-infrared diode laser sensors

Yvan Gérard, Robert J. Holdsworth, and Philip A. Martin
Appl. Opt. 46(19) 3937-3945 (2007)

Visible blind ultraviolet photodetector based on CH3NH3PbCl3 thin film

Wenzhen Wang, Haitao Xu, Jiang Cai, Jiabin Zhu, Chaowei Ni, Feng Hong, Zebo Fang, Fuzong Xu, Siwei Cui, Run Xu, Linjun Wang, Fei Xu, and Jian Huang
Opt. Express 24(8) 8411-8419 (2016)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription