Measuring laser carrier-envelope phase effects in the noble gases with   an atomic hydrogen calibration standard
  We present accurate measurements of carrier-envelope phase effects on ionisation of the noble gases with few-cycle laser pulses. The experimental apparatus is calibrated by using atomic hydrogen data to remove any systematic offsets and thereby obtain accurate CEP data on other generally used noble gases such as Ar, Kr and Xe. Experimental results for H are well supported by exact TDSE theoretical simulations however significant differences are observed in case of noble gases. 
Champak Khurmi, W. C. Wallace, Satya Sainadh U, I. A. Ivanov, A. S.   Kheifets, X. M. Tong, I. V. Litvinyuk, R. T. Sang, and...
physics.atom-ph