Validity of extracting photoionization time delay from the first moment of streaking spectrogram<xref rid="cpb_28_1_013201fn1" ref-type="fn">*</xref><fn id="cpb_28_1_013201fn1"><label>*</label><p>Project supported by the Talent Introduction Foundation of Qiannan Normal University of Nationalities, China (Grant No. qnsyrc201619), Natural Science Foundation of Guizhou Provincial Education Department for Young Talents, China (Grant No. Qian Education Contract KY[2017]339), and Chemical Sciences, Geosciences and Biosciences Division, Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy (Grant No. DE-FG02-86ER13491).</p></fn>

Validity of extracting photoionization time delay from the first moment of streaking spectrogram**

Project supported by the Talent Introduction Foundation of Qiannan Normal University of Nationalities, China (Grant No. qnsyrc201619), Natural Science Foundation of Guizhou Provincial Education Department for Young Talents, China (Grant No. Qian Education Contract KY[2017]339), and Chemical Sciences, Geosciences and Biosciences Division, Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy (Grant No. DE-FG02-86ER13491).

Wei Chang-Li¹, Zhao Xi^{2, †}

(a) Dipole amplitude |d(Ω)| and (b) dipole phase η(Ω) for Ne and Ar targets, calculated using one-electron model potential.^[55] From the dipole phase one can obtain the Wigner delay τ^dip(Ω) = dη(Ω)/dΩ, as shown in the dashed lines in (c) for Ne and (d) for Ar. After including the CLC correction^[37] τ^CLC(Ω) as plotted in the dot-dashed lines, the Wigner+CLC delay τ^dip(Ω) + τ^CLC(Ω) can be obtained as in the solid lines. The markers “+” are the extracted time delays τ^s from the COE of the TDSE spectrograms.