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Часовi характеристики пiслясвiтiння у штучному опалi

Часовi характеристики пiслясвiтiння у штучному опалi

We report the results of an experimental study of the temporal response of the artificial opal luminescence excited by UV pulses from a nitrogen laser at room temperature, liquid-nitrogen temperature, and in the intermediate range. While the response time does not exceed 15 ns at room temperature, t...

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Bibliographic Details
Main Authors: Vasnetsov, M. V., Bazhenov, V. Yu., Ponevchinsky, V. V., Plutenko, D. O., Kudryavtseva, A. D., Tcherniega, N. V.
Format: Article
Language:English
Published: Publishing house "Academperiodika" 2019
Subjects:
artificial opal
afterglow
nanocavity lasing
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Online Access:https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2019036
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Summary:We report the results of an experimental study of the temporal response of the artificial opal luminescence excited by UV pulses from a nitrogen laser at room temperature, liquid-nitrogen temperature, and in the intermediate range. While the response time does not exceed 15 ns at room temperature, the afterglow at liquid-nitrogen temperature was detected with a decay time of about 700 ms. We have revealed that the afterglow appears suddenly with just millisecond-range duration at a definite temperature of 130±5 K. The temperature dependence of the afterglow is of importance for the explanation of surprising effects of the stimulated emission in a single nano-sized SiO2 globule and the second harmonic generation in the material at liquid-nitrogen temperature.

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