Details

Autor(en) / Beteiligte

• Liu, Y.-Q.
• Zhang, J.
• Jin, Z.
• Hao, Z.-Q.
• Zhang, Z.
• Wang, Z.-H.

Titel

Spectral dynamics studies on the supercontinuum channel of femtosecond laser pulses propagation in air

Ist Teil von

• Applied physics. B, Lasers and optics, 2008-08, Vol.92 (2), p.153-157

Ort / Verlag

Berlin/Heidelberg: Springer-Verlag

Erscheinungsjahr

2008

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We present the spectral dynamics investigations of supercontinuum generation from 2.6 TW femtosecond laser pulses propagation in air. The measured spectra in the supercontinuum channel show a large amount of oscillating structure, which is mostly contributed from four-wave mixing, stimulated Raman scattering and the electronic mechanism self-phase modulation. The temporal coherence length is almost the same as 0.45 ps for each spectral component with the same spectral width of supercontinuum that is confirmed with a Michelson interferometer. The spatial coherence property of supercontinuum is measured by a Young’s double slit diffractometer, which demonstrates that supercontinuum preserves a transverse coherence of about 144 μm because of the divergence of the supercontinuum channel.