光学 精密工程, 2016, 24 (12): 2983, 网络出版: 2017-01-23   

复合型透射式脉冲压缩光栅的设计与制作

Design and fabrication of a composite transmission pulse compression grating
作者单位
1 苏州大学 物理与光电·能源学部与苏州纳米科技协同创新中心 苏州大学 江苏省先进光学制造技术重点实验室和教育部现代光学技术重点实验室, 江苏 苏州 215006
2 中佛罗里达大学 光学-激光研究与教育中心, 佛罗里达 32816
摘要
提出了一种用于飞秒钛宝石激光器的复合型透射式脉冲压缩光栅。该光栅由1 250 line/mm和3 300 line/mm两种光栅集成在一个熔石英基底上制成, 其工作中心波长为800 nm, 工作波段为700~900 nm。1 250 line/mm光栅用于脉冲压缩; 3 300 line/mm光栅的运用则有益于减少透射光栅的反射损失, 同时由于采用高频光栅结构代替了传统增透膜, 可有效减少光栅基底的波前形变。该复合光栅完全由熔石英材料构成, 故具有很高的损伤阈值。利用严格耦合波理论对该复合型透射光栅的微结构进行了优化设计, 结果表明: 1 250 line/mm光栅在中心波长800 nm处的-1级衍射效率可达98%; 3 300 line/mm增透光栅的透过率在700~900 nm波段可以达到99.7%以上。最后, 应用全息记录技术和离子刻蚀技术实际制备了Φ65 mm×1 mm的复合式透射脉冲压缩光栅, 实测衍射效率与理论设计相符。
Abstract
A composite transmission pulse compression grating was proposed for femto-second Ti∶sapphire lasers. The composite transmission grating with 700-900 nm bandwidth worked at a center wavelength of 800 nm was consisted of two gratings with groove densities 1 250 line/mm and 3 300 line/mm and they were integrated in a fused silica plate. The 1 250 line/mm grating was used for compressing laser pulse. The 3 300 line/mm anti-reflection grating was conductive to decreasing the reflection loss and avoiding the wave-front distortion by using a high frequency grating structure to replace the anti-reflection film on the surface of the fused silica plate. Completely being made of fused silica, the composite pulse compression grating has a high laser damage threshold. The composite transmission grating was designed based on the rigorous coupled wave theory. The optimization calculation results show that the -1st order diffraction efficiency of the 1 250 line/mm grating is up to 98% (@800 nm) and the transmission of the 3 300 lp/mm grating is up to 99.7% at 700-900 nm bandwidth. Finally, the composite transmission pulse compression grating(Φ65 mm×1 mm ) was fabricated by holographic recording and ion bean etching and its diffraction efficiency is coincident with that of the theoretical analysis.

李朝明, 陈新荣, 李林, 虞健, 吴建宏, 常增虎. 复合型透射式脉冲压缩光栅的设计与制作[J]. 光学 精密工程, 2016, 24(12): 2983. LI Chao-ming, CHEN Xin-rong, LI Lin, YU Jian, WU Jian-hong, CHANG Zeng-hu. Design and fabrication of a composite transmission pulse compression grating[J]. Optics and Precision Engineering, 2016, 24(12): 2983.

本文已被 2 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!