Synthesis of Longitudinal Coherence Functions by Spatial Modulation of an Extended Light Source: A New Interpretation and Experimental Verifications
Applied Optics, Vol. 41, Issue 10, pp. 1962-1971 (2002)
http://dx.doi.org/10.1364/AO.41.001962
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Abstract
Giving a new physical interpretation to the principle of longitudinal coherence control, we propose an improved method for synthesizing a spatial coherence function along the longitudinal axis of light propagation. By controlling the irradiance of an extended quasi-monochromatic spatially incoherent source with a spatial light modulator, we generated a special optical field that exhibits high coherence selectively for a specific pair of points at specified locations along the axis of beam propagation. This function of longitudinal coherence control provides new possibilities for dispersion-free measurements in optical tomography and profilometry. A quantitative experimental proof of principle is presented.
© 2002 Optical Society of America
[Optical Society of America ]
OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(070.2580) Fourier optics and signal processing : Paraxial wave optics
(120.2830) Instrumentation, measurement, and metrology : Height measurements
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.6650) Instrumentation, measurement, and metrology : Surface measurements, figure
Citation
Wei Wang, Hirokazu Kozaki, Joseph Rosen, and Mitsuo Takeda, "Synthesis of Longitudinal Coherence Functions by Spatial Modulation of an Extended Light Source: A New Interpretation and Experimental Verifications," Appl. Opt. 41, 1962-1971 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-10-1962
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