Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
Opt Lett. 2009 Nov 15;34(22):3592-4. doi: 10.1364/OL.34.003592.
We generate ultrabroadband pulses at 800 nm from an optical parametric amplifier (OPA) pumped by the second harmonic of a Ti:sapphire system and working at degeneracy. The OPA is seeded by a white-light continuum generated from a near-IR OPA pumped by the same laser. Nearly transform-limited <7 fs pulses, fully characterized in amplitude and phase, are obtained with a chirped mirror compressor. The system fills the gap around 800 nm for broadband continuum seeded OPAs pumped by Ti:sapphire-based sources.
我们从受钛宝石系统的二次谐波泵浦并工作在简并状态的光参量放大器（OPA）中产生 800nm 的超宽带脉冲。OPA 的种子源是由近红外光参量放大器受同一激光器泵浦产生的白光连续谱。通过啁啾镜压缩器获得了几乎变换极限的<7fs 脉冲，其幅度和相位得到了完全的表征。该系统填补了由基于钛宝石的光源泵浦的宽带连续谱种子光参量放大器在 800nm 附近的空白。
