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Focus-position sensing using laser speckle
Applied Optics, 1979The laser speckle resulting from a beam focused in proximity to a nonspecular surface has been examined, and a relationship between the speckle velocity and the distance from focus of the nonspecular surface is derived. An empirical verification of the relationship was performed, and the ability to determine surface position with respect to focus was ...
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1983
In the infrared, visible and ultraviolet region, there are three main kinds of sources : thermal sources which radiate at virtually all wavelengths (e.g. solid hot bodies and hot gases under high pressure), thermal sources giving line spectra (gase discharge tubes under low pressure), lasers.
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In the infrared, visible and ultraviolet region, there are three main kinds of sources : thermal sources which radiate at virtually all wavelengths (e.g. solid hot bodies and hot gases under high pressure), thermal sources giving line spectra (gase discharge tubes under low pressure), lasers.
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Laser-Speckle-Interferometrie anwenden / Application of Laser Speckle Interferometry
Materials Testing, 1998Andreas Ettemeyer +1 more
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1977
Abstract : The fluctuations of a scattered laser pulse resulting from the illumination of uncorrelated, rough-surface areas of a target are examined. Amplitude fluctuations are treated as a random process with stationary increments. LADAR range-Doppler images can n be degraded by these fluctuations.
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Abstract : The fluctuations of a scattered laser pulse resulting from the illumination of uncorrelated, rough-surface areas of a target are examined. Amplitude fluctuations are treated as a random process with stationary increments. LADAR range-Doppler images can n be degraded by these fluctuations.
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Laser speckle contrast imaging and quantitative fluorescence angiography for perfusion assessment
Langenbeck's archives of surgery (Print), 2019J. Rønn +6 more
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Laser Synthesis and Processing of Colloids: Fundamentals and Applications
Chemical Reviews, 2017Bilal Gökce, stephan Barcikowski
exaly