Comparison of CW NUV and Pulse NIR Laser Influence on PbSe Films Photosensitivity
This paper shows the laser irradiation effect on optical characteristics on PbSe chalcogenide films as a result of irreversible structural modification. The features of film structure and property modification under the action of a continuous wave (CW) laser with a 405 nm wavelength and nanosecond l...
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| Format: | Article |
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MDPI AG
2023-02-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/4/2396 |
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| author | Anastasiia A. Olkhova Alina A. Patrikeeva Maria A. Dubkova Natalia K. Kuzmenko Nikolai V. Nikonorov Maksim M. Sergeev |
| author_facet | Anastasiia A. Olkhova Alina A. Patrikeeva Maria A. Dubkova Natalia K. Kuzmenko Nikolai V. Nikonorov Maksim M. Sergeev |
| author_sort | Anastasiia A. Olkhova |
| collection | DOAJ |
| description | This paper shows the laser irradiation effect on optical characteristics on PbSe chalcogenide films as a result of irreversible structural modification. The features of film structure and property modification under the action of a continuous wave (CW) laser with a 405 nm wavelength and nanosecond laser pulses with a 1064 nm wavelength are studied. The valence and conduction bands boundaries displacement as a laser radiation result of photothermal action on the film until it darkens and bleaches, is demonstrated. Under CW near ultraviolet (NUV) laser action, the film was modified at a power density of 0.74 to 1.09 kW/cm<sup>2</sup>. The near-infrared (NIR) laser pulses used ensured the film structure modification at a power density of 1.45 kW/cm<sup>2</sup> and a pulse duration of 4 to 20 ns. Scanning with a laser spot in these modes provides the desired change in the film’s optical characteristics, and this becomes a serious alternative to the technology of heat treatment in an oven. |
| first_indexed | 2024-03-11T09:12:06Z |
| format | Article |
| id | doaj.art-818f52fa55d24fa9b3627c11a4a21b04 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T09:12:06Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-818f52fa55d24fa9b3627c11a4a21b042023-11-16T18:55:09ZengMDPI AGApplied Sciences2076-34172023-02-01134239610.3390/app13042396Comparison of CW NUV and Pulse NIR Laser Influence on PbSe Films PhotosensitivityAnastasiia A. Olkhova0Alina A. Patrikeeva1Maria A. Dubkova2Natalia K. Kuzmenko3Nikolai V. Nikonorov4Maksim M. Sergeev5Institute of Laser Technologies, National Research University ITMO, St. Petersburg 197101, RussiaInstitute of Laser Technologies, National Research University ITMO, St. Petersburg 197101, RussiaInstitute of Laser Technologies, National Research University ITMO, St. Petersburg 197101, RussiaFaculty of Photonics, National Research University ITMO, St. Petersburg 197101, RussiaFaculty of Photonics, National Research University ITMO, St. Petersburg 197101, RussiaInstitute of Laser Technologies, National Research University ITMO, St. Petersburg 197101, RussiaThis paper shows the laser irradiation effect on optical characteristics on PbSe chalcogenide films as a result of irreversible structural modification. The features of film structure and property modification under the action of a continuous wave (CW) laser with a 405 nm wavelength and nanosecond laser pulses with a 1064 nm wavelength are studied. The valence and conduction bands boundaries displacement as a laser radiation result of photothermal action on the film until it darkens and bleaches, is demonstrated. Under CW near ultraviolet (NUV) laser action, the film was modified at a power density of 0.74 to 1.09 kW/cm<sup>2</sup>. The near-infrared (NIR) laser pulses used ensured the film structure modification at a power density of 1.45 kW/cm<sup>2</sup> and a pulse duration of 4 to 20 ns. Scanning with a laser spot in these modes provides the desired change in the film’s optical characteristics, and this becomes a serious alternative to the technology of heat treatment in an oven.https://www.mdpi.com/2076-3417/13/4/2396laser modificationPbSe filmsoptical characteristicsdarkening modebleaching modeheat treatment |
| spellingShingle | Anastasiia A. Olkhova Alina A. Patrikeeva Maria A. Dubkova Natalia K. Kuzmenko Nikolai V. Nikonorov Maksim M. Sergeev Comparison of CW NUV and Pulse NIR Laser Influence on PbSe Films Photosensitivity Applied Sciences laser modification PbSe films optical characteristics darkening mode bleaching mode heat treatment |
| title | Comparison of CW NUV and Pulse NIR Laser Influence on PbSe Films Photosensitivity |
| title_full | Comparison of CW NUV and Pulse NIR Laser Influence on PbSe Films Photosensitivity |
| title_fullStr | Comparison of CW NUV and Pulse NIR Laser Influence on PbSe Films Photosensitivity |
| title_full_unstemmed | Comparison of CW NUV and Pulse NIR Laser Influence on PbSe Films Photosensitivity |
| title_short | Comparison of CW NUV and Pulse NIR Laser Influence on PbSe Films Photosensitivity |
| title_sort | comparison of cw nuv and pulse nir laser influence on pbse films photosensitivity |
| topic | laser modification PbSe films optical characteristics darkening mode bleaching mode heat treatment |
| url | https://www.mdpi.com/2076-3417/13/4/2396 |
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