Gawlik Annett, Brückner Uwe, Schmidl Gabriele, Wagner Volker, Paa Wolfgang, Plentz Jonathan
Leibniz Institute of Photonic Technology (Leibniz IPHT), Department of Functional Interfaces, Albert-Einstein-Strasse 9, 07745 Jena, Germany.
Materials (Basel). 2023 Jul 5;16(13):4841. doi: 10.3390/ma16134841.
Laser safety is starting to play an increasingly important role, especially when the laser is used as a tool. Passive laser safety systems quickly reach their limits and, in some cases, provide inadequate protection. To counteract this, various active systems have been developed. Flexible and especially textile-protective materials pose a special challenge. The market still lacks personal protective equipment (PPE) for active laser safety. Covering these materials with solar cells as large-area optical detectors offers a promising possibility. In this work, an active laser protection fabric with amorphous silicon solar cells is presented as a large-scale sensor for continuous wave and pulsed lasers (down to ns). First, the fabric and the solar cells were examined separately for irradiation behavior and damage. Laser irradiation was performed at wavelengths of 245, 355, 532, and 808 nm. The solar cell sensors were then applied directly to the laser protection fabric. The damage and destruction behavior of the active laser protection system was investigated. The results show that the basic safety function of the solar cell is still preserved when the locally damaged or destroyed area is irradiated again. A simple automatic shutdown system was used to demonstrate active laser protection within 50 ms.
激光安全正开始发挥越来越重要的作用，尤其是当激光被用作一种工具时。被动激光安全系统很快就会达到其极限，并且在某些情况下提供的保护并不充分。为了应对这一问题，人们开发了各种主动系统。柔性尤其是纺织类防护材料带来了特殊的挑战。市场上仍然缺乏用于主动激光安全的个人防护装备（PPE）。用太阳能电池作为大面积光学探测器覆盖这些材料提供了一种很有前景的可能性。在这项工作中，提出了一种带有非晶硅太阳能电池的主动激光防护织物，作为用于连续波和脉冲激光（低至纳秒级）的大规模传感器。首先，分别对织物和太阳能电池的辐照行为及损伤进行了检测。在245、355、532和808纳米波长下进行激光辐照。然后将太阳能电池传感器直接应用于激光防护织物上。研究了主动激光防护系统的损伤和破坏行为。结果表明，当再次辐照局部受损或被破坏的区域时，太阳能电池的基本安全功能仍然得以保留。使用一个简单的自动关闭系统在50毫秒内演示了主动激光防护。
