Coherence Measurement of White Light Emission from Femtosecond Laser Propagation in Air

  • Published Date: September 30, 2005
  • Strong white light emission is observed from femtosecond laser propagation in air. The divergence angle of the white light emission is measured to be about 5mrad. Young’s double-slits and a Michelson interferometer are used to investigate the coherence. The wavelength components of the white light emission are identified to have a good spatial coherence and a coherence time of about 0.5ps.
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