Abstract
We present an experimental set-up for the optical detection of condensed vapours or liquids and their refractive indices using photorefractive crystals (e. g. Barium-Calcium-Titanate or Barium-Titanate). Hereby we use a self-pumped phase conjugating mirror along with the effect of total reflection. The modulation of the signal beam in order to avoid background illumination is not necessary due to the phase- conjugated reflection. The detection of different condensed vapours or liquids and their refractive indices is possible by the variation of the input angle of the signal beam.
© 2005 Optical Society of America
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