High-Efficiency Generation of 0.12 m J, 8.6 Fs Pulses at 400 nm Based on Spectral Broadening in Solid Thin Plates

• 来源期刊: 中国物理快报（英文版）
• 关键词: @@
• 年，卷（期）: 2017,（7）
• 页码范围: 89-91
• 页数: 3页
• 语种: 英文
• DOI: 10.1088/0256-307X/34/7/074204

摘要

We demonstrate effcient generation of continuous spectrum centered at 400nm from solid thin plates.By frequency doubling of 0.8m J,30fs Ti:sapphire laser pulses with a BBO crystal,0.2m J,33fs laser pulses at 400nm are generated.Focusing the 400-nm pulses into 7 thin fused silica plates,we obtain 0.15 mJ continuous spectrum covering 350-450 nm.After compressing by 3 pairs of chirped mirrors,0.12 m J,8.6 fs pulses are achieved.To the best of our knowledge,this is the first time that sub-10-fs pulses centered at 400hm are generated by solid thin plates,which shows that spectral broadening in solid-state materials works not only at 800nm but also at different wavelengths.