Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA.
Phys Rev Lett. 2010 Aug 27;105(9):093902. doi: 10.1103/PhysRevLett.105.093902. Epub 2010 Aug 24.
Single isolated attosecond pulses can be extracted from a pulse train with an ultrafast gate in the generation target. By setting the gate width sufficiently narrow with the generalized double optical gating, we demonstrate that single isolated attosecond pulses can be generated with any arbitrary carrier-envelope phase value of the driving laser. The carrier-envelope phase only affects the photon flux, not the pulse duration or contrast. Our results show that isolated attosecond pulses can be generated using carrier-envelope phase unstabilized 23 fs pulses directly from chirped pulse amplifiers.
单个孤立的阿秒脉冲可以从产生目标中的超快门中从脉冲串中提取。通过在广义双光门中设置足够窄的门宽，我们证明可以在驱动激光的任意载波包络相位值下产生单个孤立的阿秒脉冲。载波包络相位仅影响光子通量，而不影响脉冲持续时间或对比度。我们的结果表明，可以使用直接从啁啾脉冲放大器产生的不稳定的 23fs 脉冲载波包络相位产生孤立的阿秒脉冲。
