Topic
Optical engineering
About: Optical engineering is a research topic. Over the lifetime, 11622 publications have been published within this topic receiving 113976 citations.
Papers published on a yearly basis
1 / 2
Papers
10 Apr 1997
TL;DR: In this paper, the phase shifting interferometry is used for the reconstruction of the phase information of phase 3-D images and the phase shift interferometer is used to measure the refractive index spatial distribution within optically transparent phase 3D samples with computerized interferometric microscopes.
Abstract: Measurements of refractive index spatial distribution within optically transparent phase 3-D samples with computerized interferometric microscopes is proposed. For the reconstruction of the phase information the phase shifting interferometry is used. Interferometric computed-tomography microscopes are fully automated integrated systems that incorporate CCD camera, frame grabber, computed operated PZT mirror as well as intelligible software for interferogram processing, tomographic reconstruction and refractive index distribution are displayed in 2-D and 3-D, sections, isolines, etc. Experimental results for interferometric microscopy and tomography of blood cells are presented.© (1997) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
18 citations
2 Jun 1993
TL;DR: A short description of light interaction with different kinds of human biotissues is done and some examples of lasers and fiber optics applications in diagnostics and therapy are represented.
Abstract: Characteristics and optical schematics of medical lasers and laser-fiber systems for medicine are considered. A short description of light interaction with different kinds of human biotissues is done. Some examples of lasers and fiber optics applications in diagnostics and therapy are represented.© (1993) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
18 citations
Patent•
28 May 2002
TL;DR: In this article, the authors describe a family of optical designs for broadband optical systems wherein the ratio of illumination system to collection system numerical apertures is less than 1, and the performance is enhanced through selection and control of the optical system partial coherence; this is accomplished through installation of beam-control aperture within the illumination and collection optical systems.
Abstract: The subject invention relates to broadband optical metrology tools for performing measurements of patterned thin films on semiconductor integrated circuits. Particularly a family of optical designs for broadband optical systems wherein the ratio of illumination system to collection system numerical apertures is less than 1. System performance is enhanced through selection and control of the optical system partial coherence; this is accomplished through installation of beam-control apertures within the illumination and collection optical systems. The invention is broadly applicable to a large class of broadband optical wafer metrology techniques including spectrophotometry, spectroscopic reflectometry, spectroscopic ellipsometry and spectroscopic scatterometry.
18 citations
TL;DR: An all-optical analog-to-digital conversion scheme based on a Sagnac loop and balanced receivers is proposed and experimentally demonstrated and an effective number of bits (ENOB) of 4 bits is obtained.
Abstract: An all-optical analog-to-digital conversion scheme based on a Sagnac loop and balanced receivers is proposed and experimentally demonstrated. Adjustable phase shift about the transfer function of the Sagnac loop is obtained by using the multiwavelength optical pulses to realize the phase-shift optical quantization. Benefit from the complementary outputs at the transmitted and reflected ports of the Sagnac loop and balanced receiver can be used to obtain the quantized output binary signal for the encoding operation. A proof-of-concept experiment is implemented using a wavelength tunable continuous-wave laser diode. Using 16 different wavelengths, the 16 quantization levels are demonstrated and an effective number of bits (ENOB) of 4 bits is obtained.
18 citations
Book•
1 Oct 1995
TL;DR: In this article, the authors provide a comprehensive examination of the different ways in which lenses typically are mounted in optical instruments, of the advantages and disadvantages of various mounting arrangements, and of the analytical tools that can be used to evaluate and compare different designs.
Abstract: This Tutorial Text is intended for practitioners in the fields of optical engineering and optomechanical design It provides a comprehensive examination of the different ways in which lenses typically are mounted in optical instruments, of the advantages and disadvantages of various mounting arrangements, and of the analytical tools that can be used to evaluate and compare different designs Each section contains an illustrated discussion of the technology involved and one or more practical examples, where feasible
18 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2025 | 28 |
| 2024 | 52 |
| 2023 | 18 |
| 2022 | 26 |
| 2021 | 53 |
| 2020 | 92 |