Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

High-speed flame chemiluminescence imaging using time-multiplexed structured detection

Abstract

In this work, high-speed flame chemiluminescence has been obtained by using the time-multiplexed structured detection (TMSD) imaging method from a single snapshot. TMSD sheers the time lapse into the spatial frequency shifts, which allows multiple high-speed images to be frequency upshifted into distinct spatial frequency regions from the original image. A cumulative exposure captured in a single snapshot image contains distinct time evolution. Each distinct image is demultiplexed and recovered by hyperdyne mixing with the modulation frequency. TMSD is an optical frequency domain analog to carrier frequency modulation in radio and microwave detections. Specifically, a digital micromirror device (DMD) spatially modulates flame chemiluminescence just prior to the camera. Spatial frequency of each distinct image is mixed between the original spatial frequency components and DMD modulation pattern frequency, resulting in a coded snapshot. The high-speed flame chemiluminescence image is recovered by demodulation. TMSD is similar to structured illumination used in super-resolution microscopy, but offers more advantages, for it does not alternate incident illumination light. Since DMDs are available with speeds up to 40 kHz, this technique shows promise as a cost-effective means of high-speed imaging and diagnostics of combustion phenomena.

© 2018 Optical Society of America

Full Article  |  PDF Article
More Like This
Single-shot nanosecond-resolution multiframe passive imaging by multiplexed structured image capture

Mark Gragston, Cary Smith, Daniil Kartashov, Mikhail N. Shneider, and Zhili Zhang
Opt. Express 26(22) 28441-28452 (2018)

Time-resolved measurements of a swirl flame at 4  kHz via computed tomography of chemiluminescence

Tao Yu, Can Ruan, Hecong Liu, Weiwei Cai, and Xingcai Lu
Appl. Opt. 57(21) 5962-5969 (2018)

Instantaneous 3D imaging of highly turbulent flames using computed tomography of chemiluminescence

Khadijeh Mohri, Simon Görs, Jonathan Schöler, Andreas Rittler, Thomas Dreier, Christof Schulz, and Andreas Kempf
Appl. Opt. 56(26) 7385-7395 (2017)

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 Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica 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 Optica member, or as an authorized user of your institution.

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

Figures (12)

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

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

Equations (14)

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

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

Metrics

Select as filters


Select Topics Cancel
© Copyright 2022 | Optica Publishing Group. All Rights Reserved