Controlling of Slope of Carrier-Envelope Phase of Few-Cycle Laser Pulses on Propagation Distance near the Focus

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2007,（5）
• 页码范围: 1245-1247
• 页数: 3页
• 语种: 英文

摘要

The effect of focusing geometry on slope of carrier-envelope (CE) phase φCE versus propagation distance from the focus in few-cycle laser pulses is investigated. The slope could be adjusted by changing the distance L between the waist of the incident beam and the lens. At the focus,(δ)φCE/(δ)(z/zR) = 0 when L = 0, and (δ)φCE/(δ)(z/zR) = -2 when L = ∞. The longer the distance L, the steeper the curve of the CE phase at the focus.