Results 241 to 250 of about 2,360,851 (277)
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Journal of the Optical Society of America A, 1996
The Fresnel approximation is used in the design of a lens that turns a beam with one intensity distribution into a beam with a different distribution at the focal plane of a Fourier transform lens. In general, this cannot be done exactly, so one must be satisfied with approximate solutions to this problem.
L. A. Romero, F. M. Dickey
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The Fresnel approximation is used in the design of a lens that turns a beam with one intensity distribution into a beam with a different distribution at the focal plane of a Fourier transform lens. In general, this cannot be done exactly, so one must be satisfied with approximate solutions to this problem.
L. A. Romero, F. M. Dickey
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Laser Beam Shaping and Spot Size
Current Protocols in Cytometry, 1997AbstractOne or more lasers are the source of illumination in the majority of fluorescence flow cytometers now in use. A typical laser emits a beam on the order of 1 mm in diameter. For efficient utilization this beam must be shaped and focused to a smaller size to illuminate the cell stream passing through the interrogation point.
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2000
Preface Editor Contributors Introduction Todd E. Lizotte and Fred M. Dickey Hitachi Via Mechanics (USA), Inc., Londonderry, New Hampshire and FMD Consulting, LLC, Springfield, Missouri, USA The Mathematical and Physical Theory of Lossless Beam Shaping Louis A. Romero and Fred M.
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Preface Editor Contributors Introduction Todd E. Lizotte and Fred M. Dickey Hitachi Via Mechanics (USA), Inc., Londonderry, New Hampshire and FMD Consulting, LLC, Springfield, Missouri, USA The Mathematical and Physical Theory of Lossless Beam Shaping Louis A. Romero and Fred M.
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Technique for measuring the beam shape of pulsed lasers
Review of Scientific Instruments, 1979A simple technique for the measurement of the beam shape parameters of pulsed lasers, with just a single pulse of the laser is described. It involves the use of several beam dividers inclined at very small angles to the beam axis, reflecting the beam back to a screen or a phosphor placed near the exit of the laser.
Prasad, CR +3 more
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2018
Laser Beam Shaping: Theory and Techniques addresses the theory and practice of every important technique for lossless beam shaping. Complete with experimental results as well as guidance on when beam shaping is practical and when each technique is appropriate, the Second Edition is updated to reflect significant developments in the field.
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Laser Beam Shaping: Theory and Techniques addresses the theory and practice of every important technique for lossless beam shaping. Complete with experimental results as well as guidance on when beam shaping is practical and when each technique is appropriate, the Second Edition is updated to reflect significant developments in the field.
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Mathematical Aspects of Laser Beam Shaping and Splitting
International Optical Design Conference and Optical Fabrication and Testing, 2010We will discuss general mathematical ideas arising in the problems of Laser beam shaping and splitting. We will be particularly concerned with questions concerning the scaling and symmetry of such systems.
L. A. Romero, F. M. Dickey
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Laser beam shaping for surgery and microbiopsy
2022Lasers are increasingly being used in surgery in a wide range of medical specialties due to their advantages over alternative surgical tools including precise material removal, limited bleeding due to coagulation around the incision site, and delivery through optical fibers enabling use in body cavities and for minimally invasive surgeries ...
King, Jason Brett, 0000-0002-3866-7420
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Model Predictive Control for Laser Beam Shaping
IEEE Latin America Transactions, 2017Adaptive Optics (AO) is a technique used to mitigate the effect of the atmosphere in the resolution of scientific images. The performance of an adaptive optics system strongly depends on the quality of the laser beam projected to the sky in terms of amplitude and phase. Currently, cumbersome procedures are carried out to optimize the laser beam.
Escarate, Pedro +3 more
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Laser–particle interactions in shaped beams: Beam power normalization
Journal of Quantitative Spectroscopy and Radiative Transfer, 2013Abstract We present a semi-analytic theory for calculating light–particle interactions in shaped laser beams even when the paraxial beam description is invalid. It requires weighting the expressions for the cross sections with a beam normalization parameter, ϰ , associated with the incident power.
Stout, Brian +4 more
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Micrograting-array beam-shaping technique for asymmetrical laser beams
Applied Optics, 2005A beam-shaping technique is presented for asymmetrical laser beams with different beam waists and divergences in both vertical and horizontal directions. We utilize a pair of two-dimensional micrograting arrays to equalize the beam parameter products of an asymmetrical beam in orthogonal directions by deflecting the appointed parts of the beam on the ...
Guoxing, Zheng +3 more
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