Table 1 Comparison of photon fluxes in the soft X-ray in existing beamlines using HHG driven by few-cycle SWIR pulses.

From: Efficient table-top dual-wavelength beamline for ultrafast transient absorption spectroscopy in the soft X-ray region

Condition

Photons/s in 1% BW at 300 eV

Photons/s in 10% BW at 300 eV

Photons/s in 1% BW at 200 eV

1400 nm, 4 mm cell

3.4 × 104

3.3 × 105

1.18 × 106

1300 nm, 4 mm cell

3.4 × 104

3.6 × 105

6.4 × 106

1300 nm, 1 mm cell

2.5 × 104

2.7 × 105

2.0 × 106

1300 nm, semi-infinite 7.5 cm cell

2.5 × 105

2.4 × 106

1.2 × 107

1300 nm, semi-infinite, optimal

1.4 × 106

1.3 × 107

4.5 × 107

1850 nm, 12 fs in Ne23

 

2.8 ± 0.1 × 107

 

1850 nm, 12 fs in He23

 

1.8 ± 0.1 × 106

 

1800 nm, 12 fs in Ne24

3.0 ± 0.8 × 106

  

1800 nm, 12 fs in He24

1.6 ± 0.4 × 105

  
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