Generation of flat-top pulse by means of step gratings

✍ Scribed by Guohua Liu; Rongrong Xu; Hanping Wu; Wenbing Yu

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 745 KB
• Volume: 43
• Category: Article
• ISSN: 0030-3992
• DOI: 10.1016/j.optlastec.2011.05.005

✦ Synopsis

A simple method for generating flat-top pulse by means of step gratings is presented. Flat-top pulse specifications depend on the structural parameters of the step gratings. The results show that a short Gaussian-shaped femtosecond laser pulse can be shaped to be a long flat-top pulse by ensuring sufficient step level number and proper step height.