نتایج جستجو برای: optical instrument

تعداد نتایج: 346252  

Journal: :Applied optics 2006
Mark R Ayres Robert R McLeod

Optical data manipulation technologies increasingly employ densely aperiodic optical 3D phase elements. Refinement of such technologies will require the capability to quantitatively characterize the volumetric dielectric modulation of an optical sample to a high level of precision and spatial resolution. We present a scanning transmission microscopy system that uses a position-sensitive detecto...

Journal: :Optics letters 2018
Conrad William Merkle Shau Poh Chong Aaron Michael Kho Jun Zhu Alfredo Dubra Vivek Jay Srinivasan

Most flying-spot optical coherence tomography and optical coherence microscopy (OCM) systems use a symmetric confocal geometry, where the detection path retraces the illumination path starting from and ending with the spatial mode of a single-mode optical fiber. Here we describe a visible light OCM instrument that breaks this symmetry to improve transverse resolution without sacrificing collect...

Journal: :Acta Crystallographica Section A Foundations of Crystallography 2005

1999
Brian Trotter Garret Moddel Rachel Ostroff Gregory R. Bogart

Rachel Ostroff Gregory R. Bogart BioStar, Incorporated 6655 Lookout Road Boulder, Colorado 80301 Abstract. The fixed-polarizer ellipsometer measures thickness of thin films. It is simple, inexpensive, and provides a linear response over a range of 800 Å. We develop a matrix formulation to describe the optical characteristics of the instrument and apply it to the case of a single thin film on a ...

Journal: :Journal of the Japan Society for Precision Engineering 1996

Journal: :The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science 1915

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