Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Patent
1997-08-29
2000-08-29
Nguyen, Vinh P.
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
324 96, G01R 31308
Patent
active
061114162
ABSTRACT:
Apparatus and methods for characterizing free-space electromagnetic energy, and in particular, apparatus/method suitable for real-time two-dimensional far-infrared imaging applications are presented. The sensing technique is based on a non-linear coupling between a low-frequency electric (or magnetic) field and a laser beam in an electro-optic (or magnetic-optic) crystal. In addition to a practical counter-propagating sensing technique, a co-linear approach is described which provides longer radiated field-optical beam interaction length, thereby making imaging applications practical.
REFERENCES:
patent: 3675125 (1972-07-01), Jaecklin
patent: 3769584 (1973-10-01), Iten et al.
patent: 3927945 (1975-12-01), Bates
patent: 4070621 (1978-01-01), Bassen et al.
patent: 4595876 (1986-06-01), Kuhara et al.
patent: 4618819 (1986-10-01), Mourou et al.
patent: 4873485 (1989-10-01), Williamson
patent: 4891581 (1990-01-01), Takiguchi
patent: 4896103 (1990-01-01), Shimanuki et al.
patent: 4910458 (1990-03-01), Forsyth et al.
patent: 4928058 (1990-05-01), Williamson
patent: 5006789 (1991-04-01), Williamson
patent: 5134361 (1992-07-01), Pillow
patent: 5406194 (1995-04-01), Dykaar et al.
Wu et al., "Free-Space Electro-Optic Sampling of Terhertz Beams," Appl. Phys. Lett., Vo. 67, No. 24, pp. 1-3, Dec. 1995.
Jespen et al., "Detection of High Power THz Pulses by Phase Retardation in an Electro-Optic Crystal," International Symposium on Ultra-Fast Processes In Spectroscopy, Trieste, Italy Oct. 30-Nov. 3, 1995, pp. 1-7.
Hu et al., "Imaging with Terahertz Waves," Optic Letters, vol. 20, No. 16, pp. 1716-1719, May 1995.
A Lauren Publication Biophotonics, "Bell Labs''T-rays' Provide Unique Images With a Variety of Potential Applications," Biophotonics International, pp. 58-59, Jul./Aug. 1995.
Nahata et al., "Coherent Detection of Freely Propagating Terhertz Radiation by Electro-Optic Sampling," Appl. Phys. Lett., vol. 68, No. 2, pp. 150-152, Jan. 1996.
Nuss, Martin C., "Chemistry is Right for T-Ray Imaging," IEEE Circuits and Devices, pp. 25-29, Mar. 1996.
Hu, B.B., Zhang, X.-C., Auston, D.H. and Smith, P.R., "Free-Space Radiation From Electro-Optic Crystals", 1990 American Institute of Physics, Appl Phys, Lett. 56(6), Feb. 5, 1990 (pp. 506-508).
Green, B.I., Federici, J.F., Dykaar, D.R., Jones, R.R. and Bucksbaum, P.H., "Interferometric Characterization of 160 fs Far-Infrared Light Pulses", 1991 American Institute of Physics, Appl. Phys. Lett. 59(8), Aug. 19, 1991 (pp. 893-895).
Wu, Q. and Zhang, X.-C., "Ultrafast Electro-Optic Field Sensors", 1996 American Institute of Physics, Appl. Phys. Lett. 698(12), Mar. 18, 1996 (pp. 1604-1606).
Wu, Q., Litz, M. and Zhang, X.-C., "Broadband Detection Capability of ZnTe Electro-Optic Field Detectors", 1996 American Institute of Physics, Appl. Phys. Lett. 68(21), May 20, 1996 (2924-2926).
Riordan Jenifer Ann
Sun Feng-Guo
Zhang Xi-Cheng
Kobert Russell M.
Nguyen Vinh P.
Rensselaer Polytechnic Institute
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