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Laser imaging through scattering media by enhanced heterodyne detection and speckle averaging using 2D detector array

Laser imaging through scattering media by enhanced heterodyne detection and speckle averaging using 2D detector array

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A coherent detection technique which employs a two-dimensional heterodyne detector array is proposed for the enhanced detection and speckle averaging of laser signals transmitted through highly scattering media. By using an 8×8 InGaAs detector array, this technique is demonstrated to significantly improve the optical images of materials and biological objects.

Inspec keywords: optical images; light coherence; light interferometry; biological techniques; laser beam applications

Other keywords: biological object imaging; 2D detector array; coherent detection technique; speckle averaging; enhanced heterodyne detection; optical images; scattering media; InGaAs; laser imaging

Subjects: Optical interferometry; Biophysical instrumentation and techniques; Laser beam applications

References

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