ZnO Microwire-Based Fiber-Tip Fabry-Pérot Interferometer for Deep Ultraviolet Sensing

Wu, Han; Zhang, Lichao; Guo, Kuikui; Huang, Yijian; Liao, Changrui

doi:10.1109/jlt.2020.3013929

Cited by 12 publications

(3 citation statements)

References 28 publications

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“…A more practical approach would be to embed nanostructures that can provide gain, for example, ZnO, GaN, and GaAs. Implementing ZnO in fiber has successfully been demonstrated for other applications, mostly for sensing. − Several detection mechanisms have been put forth. For instance, Bora et al reported average coupling efficiency of ∼2.65% that changes the sensitivity when exposed to different chemical vapors .…”

Section: Conclusion and Way Forwardmentioning

confidence: 99%

“…On the other hand, last year Wu et al proposed an optical fiber capped with a ZnO microwire whereby the tip acts as a Fabry−Perot cavity for monitoring deep UV light. 149 Changes in refractive index induced by variations in the concentration of photogenerated carriers exhibits a red shift in the lasing spectrum with a sensitivity of 0.288 nm/(W•cm −2 ). However, refining according to the requirements of a random laser is yet to be explored.…”

Section: ■ Conclusion and Way Forwardmentioning

confidence: 99%

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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: Conclusion and Way Forwardmentioning

confidence: 99%

Section: ■ Conclusion and Way Forwardmentioning

confidence: 99%

Review of Open Cavity Random Lasers as Laser-Based Sensors

et al. 2022

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“…In recent years, optical fiber sensor has proven to be a powerful tool in many industrial and commercial applications due to their advantages of small size, excellent stability, high temperature resistance, and anti-electromagnetic interference [5,6]. Naturally, fiber optic sensors for the specific detection of UV light have also been developed through combining the advantages of wide band-gap semiconductors and optical fibers, which broadens the practicability of UV photodetectors significantly [7,8]. Zinc oxide (ZnO) is a kind of wide bandgap (≈3.37 eV) semiconductor with large exciton binding energy (≈60 meV), high transparency, and excellent UV absorption, so it has become one of the most ideal materials for UV detection [9].…”

Section: Introductionmentioning

confidence: 99%