Working principle of the delay unit. The time delay is introduced by changing the 

  core position(reflecting the XU V/soft X-ray pulses) in respect to the ring 

  (reflecting the IR pulses). Adjustment of 5 degrees of freedom offers perfect 

  control for spatial and temporal overlap in the focus.

  Attosecond photoelectron streaking experiments performed with our XUV/IR 

  pulse delay unit at MPQ (Garching, Germany) are shown above. The top 

  figure depicts the measurement performed with a short 80 as pulse and a 

  3.3 fs streaking IR pulse (its vector potential is shown in dashed white) [2]. 

  The bottom results from a 250 as pulse and a 4.3 fs IR pulse. Both 

  demonstrate the high achievable temporal resolution with our device, the 

  key to innovation and success in ultrafast experiments.

Pulse Delay Unit K2

Our pulse delay unit makes use of our XUV/soft X-ray multilayer double mirrors and combines 

them with our profound knowledge in pump-probe experimental setups. The two-segment 

mirror facilitates focusing IR pulses and lower divergent XUV/soft X-ray pulses onto a common 

focus with an interferometrically precisely adjustable time delay. This allows temporal resolved 

experiments with pumping systems of interest either with the XUV/soft X-ray pulse and probe it 

with the IR or vice-versa. Based on the nature of e.g. attosecond pulses generated in the XUV/

soft X-ray range by high-harmonic generation (HHG) this offers state-of-the-art highest temporal 

resolution for your experiments. The mirror coating can be customized according to the center 

energy and bandwidth.

Key Product Features:

 Temporal resolution: 3 attoseconds

 Scan range: 300 fs

 Adjustment with 5 degrees of freedom

 Customized energy range and bandwidth

 Vacuum combability: <10-6 mbar

 Travel range actuator: ≈ 100 µm (software limits the range from 0-95 µm)

 Resolution actuator: 2 nm

 Travel range: 25 mm

 Step size: < 30 nm