Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Yunlu Zou"'
Publikováno v:
Optics and Lasers in Engineering. 26:199-219
A digitial double-pulsed holographic system will be described. Two separate holograms of an object under test are recorded within a few microseconds using a CCD-camera and stored in a frame grabber. Different recording arrangements for Fresnel hologr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b04428d530fa056ac9982d7443cd31c
https://doi.org/10.1016/0143-8166(95)00113-1
https://doi.org/10.1016/0143-8166(95)00113-1
Publikováno v:
Pure and Applied Optics: Journal of the European Optical Society Part A. 5:313-321
In this paper we describe a digital shearing interferometer system. The set-up is composed of a Mach - Zehnder interferometer which allows us to split the image of one object and to recombine the two images shifted and tilted. The tilt between the tw
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ffb7b2328d2269c215f59e418203bf9
https://doi.org/10.1088/0963-9659/5/3/008
https://doi.org/10.1088/0963-9659/5/3/008
Publikováno v:
Journal of Modern Optics. 43:639-646
A two-wavelength surface contouring system based on electronic speckle pattern interferometry (ESPI) with a pulsed ruby laser is reported. Two states of the test object were recorded at different wavelengths of the laser. The wavelength change was co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e2eb6dfb59fc966dcdd8832ba4e8d18
https://doi.org/10.1080/09500349608232771
https://doi.org/10.1080/09500349608232771
Publikováno v:
Journal of Modern Optics. 43:395-407
A hologram of an object is recorded using a CCD-sensor and stored in a frame grabber. The hologram is reconstructed digitally using a computer by simulation of Fresnel diffraction. The complex amplitudes of the reconstructed wave fields and the coher
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eec8c6bafbed09a43cdf09b3d2f28c10
https://doi.org/10.1080/09500349608232752
https://doi.org/10.1080/09500349608232752
Publikováno v:
Optics Communications. 118:186-192
In this paper we describe a digital holographic system for the comparison of two reflecting surfaces (e.g. spherical mirrors). Two holograms of the two objects to be compared are recorded using a CCD-camera and stored in a frame grabber. Two methods
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4a5094e5787c9be7f28687871316409
https://doi.org/10.1016/0030-4018(95)00248-7
https://doi.org/10.1016/0030-4018(95)00248-7
Publikováno v:
Journal of Modern Optics. 42:367-374
In this paper we describe a digital double-pulsed holographic system. Two separate holograms of an object under test are recorded within a few microseconds using a charge-coupled device camera and stored in a frame grabber. The holograms are digitall
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0fc33d32c1b1c8447bcc8fa5eb12f31f
https://doi.org/10.1080/09500349514550321
https://doi.org/10.1080/09500349514550321
Publikováno v:
Applied optics. 31(31)
When the method of contouring an object surface by electronic speckle pattern interferometry is based on shifting the illumination beams, the shifted phase of the interference speckle pattern has a new relationship with the depth of the test surface.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a72469867297d29cb6297f188014bebe
https://pubmed.ncbi.nlm.nih.gov/20733887
https://pubmed.ncbi.nlm.nih.gov/20733887
Publikováno v:
Applied optics. 31(31)
We present a new arrangement for contouring by electronic speckle pattern interferometry with four illumination beams, thereby making it unnecessary to move anything during the measurement.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::962a0b5a8ce9175ad055ba4dccdf53a8
https://pubmed.ncbi.nlm.nih.gov/20733883
https://pubmed.ncbi.nlm.nih.gov/20733883
Publikováno v:
Optical Solutions for Homeland and National Security.
A real-time distributed fiber sensor is described, which is based on Brillouin optical time-domain reflectometry using our propriety fiber laser technology. The sensor offers capabilities of protecting security sectors to larger perimeters using comm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::155382b1dd3244929c7e6676ca38e2a3
https://doi.org/10.1364/oshs.2005.p3
https://doi.org/10.1364/oshs.2005.p3
Autor:
Yunlu Zou, Charles Pergantis, Andrew A. Kostrzewski, Gajendra D. Savant, Dai Hyun Kim, Tin M. Aye
Publikováno v:
SPIE Proceedings.
This paper describes the development of real-time non-contact metrology based on holographic interferometry and neural network fringe analysis software to detect defects in composite materials. The object under inspection is illuminated by a high-pow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f06e3c4b4d0536e461da3172d047b78c
https://doi.org/10.1117/12.397799
https://doi.org/10.1117/12.397799