Laser-based sensors

Ledingham, K. W. D.; Campbell, M.

doi:10.1007/978-94-009-1571-8_3

Cited by 2 publications

(1 citation statement)

References 38 publications

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“…Laser-based sensors have been reported to address critical challenges in creating reliable, real-time, and cost-effective monitoring integrated systems which are robust to changes in chemical composition over extended periods of time . The sensors must be precise to make them efficient especially for monitoring greenhouse gases for near- and long-term applications in environmental monitoring, measuring, and tracking ultra-high-precision movement particularly as a form of detecting misalignment in high-precision systems, as a delivery rate sensor for laser-based additive manufacturing, as well as being integrated into a laser measurement system known as LMS for preventing accidents…”

Section: Laser-based Sensing Overviewmentioning

confidence: 99%

Review of Open Cavity Random Lasers as Laser-Based Sensors

et al. 2022

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In this review, the concept of open cavity lasing for ultrasensitive sensing is explored, specifically in driving important innovations as laser-based biosensorsa field mostly dominated by fluorescence-based sensing. Laser-based sensing exhibits higher signal amplification and lower signal-to-noise ratio due to narrow emission lines as well as high sensitivity due to nonlinear components. The versatility of open cavity random lasers for probing analytes directly which is ultrasensitive to small changes in chemical composition and temperature fluctuations paves the path of utilizing narrow emission lines for advanced sensing. The concept of random lasing is first explained followed by a comparison of the different lasing threshold that has been reported. This is followed by a survey of reports on laser-based sensing and more specifically as biosensors. Finally, a perspective on the way forward for open cavity laser-based sensing is put forth.

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Section: Laser-based Sensing Overviewmentioning

confidence: 99%

Review of Open Cavity Random Lasers as Laser-Based Sensors

et al. 2022

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UV random laser in aluminum-doped ZnO nanorods

et al. 2021

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Vertically aligned Al-doped ZnO nanorods (AZO-NRs) were grown on glass substrate using a chemical bath deposition (CBD) method at various temperatures between 80°C and 130°C. The results showed the Al content in the AZO-NRs strongly depends on the growth temperature. The optimum doping level was attained at 110°C. The morphology was maintained in each sample, and the lasing properties were investigated against the Al-doped variation. The sample with a high doping level exhibited superior random lasing, with high intensity and spectral width of less than 0.08 nm. The same sample also had the lowest pumping threshold of 0.192 mW. More importantly, this study showed the possibility of utilizing doping as a tuning parameter for random lasing, whereby a 7.3 nm redshift in the lasing peak was observed with increasing doping concentration. This study also placed an emphasis on AZO-NRs as potential candidates for tunable random laser devices.

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Laser-based sensors

Cited by 2 publications

References 38 publications

Review of Open Cavity Random Lasers as Laser-Based Sensors

Review of Open Cavity Random Lasers as Laser-Based Sensors

UV random laser in aluminum-doped ZnO nanorods

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