Fig. 2. Experimental results in comparison to simulations.
(A) Measured energy spectrum as a function of time delay Δt. a.u., arbitrary units. (B) Result of a one-dimensional simulation, convoluted with the measured beam bandwidth. (C) Measured energy spectrum of the electron beam without modulation (black), with continuous-wave modulation (green, dashed), and after deconvolution (green). There are two sidebands appearing at ±hν, the photon energy. (D) Beam current in the sidebands as a function of delay time. Dots are measurements and lines are quantum simulations. ZLP, zero-loss peak; ΔtSB, delay between the different photon orders. (E) Beam current in the sidebands as a function of laser polarization at the metrology membrane; compression is turned off. Dots are measurements and solid lines are cos2 fits. (F) Beam current in the sidebands as a function of laser power at the sample; the compression is turned off. Dots are measurements and lines are quantum simulations. (G) Measured delay (dots) of the ±1st sideband maxima with respect to the dip of the zero-loss peak. Dashed line, average; inset, definition of ΔtSB.