Zobrazeno 1 - 10
of 97
pro vyhledávání: '"G.D. Bacher"'
Autor:
Marvin B. Klein, J.A. Coy, David D. Nolte, Gilmore J. Dunning, G.D. Bacher, M. P. Chiao, David M. Pepper
Publikováno v:
Optics letters. 24(5)
The responsivity at a constant detection area of non-steady-state photoinduced electromotive force (photo-emf) detectors is improved by a factor equal to the number of contact pairs contained in asymmetric interdigitated surface contacts. The polar n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c5faad9c5d7526a0183170fbb1962b32
https://pubmed.ncbi.nlm.nih.gov/18071500
https://pubmed.ncbi.nlm.nih.gov/18071500
Autor:
Marvin B. Klein, M. P. Chiao, G. J. Dunning, J.A. Coy, David D. Nolte, David M. Pepper, G.D. Bacher
Publikováno v:
Technical Digest. Summaries of papers presented at the Conference on Lasers and Electro-Optics. Postconference Edition. CLEO '99. Conference on Lasers and Electro-Optics (IEEE Cat. No.99CH37013).
Summary form only given. Laser-based ultrasound detection uses photo-induced emf. The low responsivity of all conventional photo-emf sensors has been a serious challenge because it is more than an order of magnitude less sensitive than conventional p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07408f49170d8b10baf935edf22ace5e
https://doi.org/10.1109/cleo.1999.834514
https://doi.org/10.1109/cleo.1999.834514
Autor:
I. Lahiri, T. R. O’Meara, David M. Pepper, G. J. Dunning, G.D. Bacher, Marvin B. Klein, M. P. Chiao, David D. Nolte, P. V. Mitchell
Publikováno v:
Nonlinear Optics '98. Materials, Fundamentals and Applications Topical Meeting (Cat. No.98CH36244).
In recent years, there has been a need for improved basic materials evaluation during and after processing. In particular, there is a need for nondestructive, noncontact characterization of critical materials without mechanical loading, inspection of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a15ba55f126617174f77441eb7af9a54
https://doi.org/10.1109/nlo.1998.710351
https://doi.org/10.1109/nlo.1998.710351
Autor:
Marvin B. Klein, G.D. Bacher, David D. Nolte, B. Pouet, Gilmore J. Dunning, J.A. Coy, David M. Pepper
Publikováno v:
Nonlinear Optics: Materials, Fundamentals, and Applications. Technical Digest. Postconference Edition. TOPS Vol.46 (IEEE Cat. No.00CH37174).
We demonstrate enhanced responsivity in GaAs photo-EMF adaptive photodetectors using a novel asymmetric interdigitated electrode configuration with fine spacing. We observe enhancements even when only a fraction of an optical fringe is collected betw
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59dca33e2e2f5ee51d809005dabee791
https://doi.org/10.1109/nlo.2000.883576
https://doi.org/10.1109/nlo.2000.883576
Publikováno v:
Nonlinear Optics: Materials, Fundamentals and Applications.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6bfb5790f5ad5a4c1343de4974238bf9
https://doi.org/10.1364/nlo.2000.tub4
https://doi.org/10.1364/nlo.2000.tub4
Publikováno v:
Conference on Lasers and Electro-Optics (CLEO 2000). Technical Digest. Postconference Edition. TOPS Vol.39 (IEEE Cat. No.00CH37088).
Summary form only given.Photo-induced EMF provides an attractive means to perform adaptive interferometry that is insensitive to speckle or vibrations. One particular application is for laser-based ultrasound detection if the sensitivity of the techn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d68c6f01351aab1e9d7d5966ccc875a
https://doi.org/10.1109/cleo.2000.906780
https://doi.org/10.1109/cleo.2000.906780
Autor:
G. J. Dunning, David D. Nolte, J.A. Coy, B. Pouet, G.D. Bacher, Marvin B. Klein, D. M. Pepper
Publikováno v:
AIP Conference Proceedings.
An ongoing challenge for laser-based ultrasound sensors is to improve the sensitivity of adaptive photodetectors. This class of sensor is compact, robust, and simple to implement. Moreover, it can optically detect the desired ultrasound information a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::974055a346fdb51f53b3c28809a4ad85
https://doi.org/10.1063/1.1291318
https://doi.org/10.1063/1.1291318
Publikováno v:
SPIE Proceedings.
Laser-based ultrasonic (LBU) measurement shows great promise for on-line monitoring of weld quality in tailor-welded blanks. Tailor-welded blanks are steel blanks made from plates of differing thicknesses and/or properties butt- welded together, they
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64d36efa21dc13e968f91ca59b053e78
https://doi.org/10.1117/12.372829
https://doi.org/10.1117/12.372829
Autor:
Pierre H. Brodeur, G.D. Bacher, Marvin B. Klein, Emmanuel Lafond, Bruno F. Pouet, Brian M. Pufahl
Publikováno v:
SPIE Proceedings.
Stiffness properties of paper materials can readily be characterized in the laboratory using conventional ultrasonic techniques. For on-line inspection on a paper machine, due to the high translation velocity and the somewhat fragile nature of the mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50134b7cc55bc97a2351de4b6d6f50d3
https://doi.org/10.1117/12.339961
https://doi.org/10.1117/12.339961
Publikováno v:
SPIE Proceedings.
In recent years, a number of adaptive interferometers have been used for the remote detection of laser-generated ultrasonic waves in parts under inspection. One type of adaptive interferometer uses two-wave mixing in a photorefractive material to for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2886c37bd0e0a6877bb5f5b076a9e324
https://doi.org/10.1117/12.339966
https://doi.org/10.1117/12.339966