Random pinhole attenuator for high-power laser beams
| Autor: | Seong Cheol Park, Hyeok Yun, Jin Woo Yoon, Seong Ku Lee, Jae Hee Sung, Il Woo Choi, Chang Hee Nam, Kyung Taec Kim |
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| Jazyk: | angličtina |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | High Power Laser Science and Engineering, Vol 12 (2024) |
| Druh dokumentu: | article |
| ISSN: | 2095-4719 2052-3289 |
| DOI: | 10.1017/hpl.2024.15 |
| Popis: | The intensity attenuation of a high-power laser is a frequent task in the measurements of optical science. Laser intensity can be attenuated by inserting an optical element, such as a partial reflector, polarizer or absorption filter. These devices are, however, not always easily applicable, especially in the case of ultra-high-power lasers, because they can alter the characteristics of a laser beam or become easily damaged. In this study, we demonstrated that the intensity of a laser beam could be effectively attenuated using a random pinhole attenuator (RPA), a device with randomly distributed pinholes, without changing the beam properties. With this device, a multi-PW laser beam was successfully attenuated and the focused beam profile was measured without any alterations of its characteristics. In addition, it was confirmed that the temporal profile of a laser pulse, including the spectral phase, was preserved. Consequently, the RPA possesses significant potential for a wide range of applications. |
| Databáze: | Directory of Open Access Journals |
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