Laser-pump-resistive-probe technique to study nanosecond-scale relaxation processes
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arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2023
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| _version_ | 1866929326908243968 |
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| author | Blumenau, M. I. Kuntsevich, A. Yu. |
| author_facet | Blumenau, M. I. Kuntsevich, A. Yu. |
| contents | Standard optical pump-probe methods analyze a system's temporal response to a laser pulse within sub-femtoseconds to several nanoseconds, constrained by the optical delay line's length. While resistance is a sensitive detector in various fields, its measurements are typically slow (>microseconds) due to stabilization requirements. We suggest here a time-resolved pump-probe technique which combines an optical pump pulse and a rectangular electrical probe pulse through the sample, measuring transmission in a 50 Ohm matched circuit with a digital oscilloscope. This allows electrically-driven delays from nanoseconds to seconds. Demonstrations include studying heat-induced changes in a thin amorphous VO$_x$ film and carrier relaxation in a CdS photoresistor, showcasing potential applications in heat transfer, biochemical reactions, and gradual electronic transformations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2309_07883 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Laser-pump-resistive-probe technique to study nanosecond-scale relaxation processes Blumenau, M. I. Kuntsevich, A. Yu. Instrumentation and Detectors Standard optical pump-probe methods analyze a system's temporal response to a laser pulse within sub-femtoseconds to several nanoseconds, constrained by the optical delay line's length. While resistance is a sensitive detector in various fields, its measurements are typically slow (>microseconds) due to stabilization requirements. We suggest here a time-resolved pump-probe technique which combines an optical pump pulse and a rectangular electrical probe pulse through the sample, measuring transmission in a 50 Ohm matched circuit with a digital oscilloscope. This allows electrically-driven delays from nanoseconds to seconds. Demonstrations include studying heat-induced changes in a thin amorphous VO$_x$ film and carrier relaxation in a CdS photoresistor, showcasing potential applications in heat transfer, biochemical reactions, and gradual electronic transformations. |
| title | Laser-pump-resistive-probe technique to study nanosecond-scale relaxation processes |
| topic | Instrumentation and Detectors |
| url | https://arxiv.org/abs/2309.07883 |