The effect of thermal expansion on speckle correlation from surface scattering of a transparent dielectric slab was investigated. The speckle patterns on a CCD camera was recorded to calculate the cross-correlation C(T0,T0+ T) between speckle recorded at 25°C. Thermal expansion of the glass thickness creates a temperature dependent phase difference between the forward and backward scattered light. It was concluded that the correlation for two samples of different thickness oscillates with a frequency ratio proportional to the ratio of thickness.
|Number of pages||3|
|State||Published - 2003|
|Event||Conference on Lasers and Electro-Optics (CLEO); Postconference Digest - Baltimore, MD, United States|
Duration: 1 Jun 2003 → 6 Jun 2003
|Conference||Conference on Lasers and Electro-Optics (CLEO); Postconference Digest|
|Period||1/06/03 → 6/06/03|