of the samples was calculated by using Scherrer equation :
The high coherence length
of this arrangement allows image depths of up to a few metres.
The specifications for selecting a laser segment discusses wavelength, coherence length
, beam divergence, and Rayleigh range.
However, the resolution of a coherent optical sensor depends on the coherence length
of a light source .
In neutron-diffraction studies of B2-ordered Fe-Al alloys, a correlation of the magnetic moments with a coherence length
of about 5 nm was revealed .
When the optical lengths of the sample and reference path are almost equal (i.e., the difference is no more than the source coherence length
), the interference pattern becomes visible.
OCT takes the advantage of short coherence length
of broadband light sources to perform micrometer-scale, cross-sectional imaging of biologic tissue sample.
where [[rho].sub.0] = [(0.546[C.sup.2.sub.n][k.sup.2]L).sup.-3/5] is the coherence length
of a spherical wave propagating in turbulence.
Interference fringes occur with backreflected light under the condition that both path lengths match to within the coherence length
of the light.
Specifically in triple-axis diffractometer measurements, the broadening of the rocking curve ([omega]-scan or angular-scan) of the symmetric (0002), (0004), and (0006) reflections for the epitaxial layer is influenced only by the [[alpha].sub.tilt] angle and short coherence length
parallel to the substrate surface [L.sub.P] [8,9,21, 23].