https://trojanpt.github.io/tags/optics/ Recent content in Optics on Trojan TeaHouse Hugo zh-Hans © 2025 TrojanPoint Sat, 17 Jan 2026 00:00:00 +0000 https://trojanpt.github.io/jottings/bessel-beam/ Sat, 17 Jan 2026 00:00:00 +0000 https://trojanpt.github.io/jottings/bessel-beam/ 贝塞尔光束表现出无衍射特性，这类光束具有新颖且独特的光学性质