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 doi:10.1364/AO.41.001962
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- 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/abstract.cfm?URI=ao-41-10-1962
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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
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