Electro-Optical Sensing Apparatus and Method for Characterizing Free-Space Electromagnetic Radiation

Zhang, Xi-Cheng; Libelo, Louis Francis; Wu, Qi

Title: Electro-Optical Sensing Apparatus and Method for Characterizing Free-Space Electromagnetic Radiation

Patent · Tue Sep 14 00:00:00 EDT 1999

OSTI ID:833452

Zhang, Xi-Cheng; Libelo, Louis Francis; Wu, Qi

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 field and a laser beam in an electro-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.

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Research Organization:: Rensselaer Polytechnic Institute, Troy, NY (US)

Sponsoring Organization:: USDOE Office of Environmental Management (EM) (US)

Assignee:: DOEEMSP

Patent Number(s):: 5,952,818

Application Number:: R&D Project: EMSP 65004; 08/739,099; TRN: US200430%%1489

OSTI ID:: 833452

Resource Relation:: Other Information: PBD: 14 Sep 1999

Country of Publication:: United States

Language:: English

References (9)

Coherent detection of freely propagating terahertz radiation by electro‐optic sampling Nahata, Ajay; Auston, David H.; Heinz, Tony F. Applied Physics Letters, Vol. 68, Issue 2 https://doi.org/10.1063/1.116130	journal	January 1996
Free‐space radiation from electro‐optic crystals Hu, B. B.; Zhang, X. ‐C.; Auston, D. H. Applied Physics Letters, Vol. 56, Issue 6 https://doi.org/10.1063/1.103299	journal	February 1990
Broadband detection capability of ZnTe electro‐optic field detectors Wu, Q.; Litz, M.; Zhang, X. ‐C. Applied Physics Letters, Vol. 68, Issue 21 https://doi.org/10.1063/1.116356	journal	May 1996
Interferometric characterization of 160 fs far‐infrared light pulses Greene, B. I.; Federici, J. F.; Dykaar, D. R. Applied Physics Letters, Vol. 59, Issue 8 https://doi.org/10.1063/1.105268	journal	August 1991
Ultrafast electro‐optic field sensors Wu, Q.; Zhang, X. ‐C. Applied Physics Letters, Vol. 68, Issue 12 https://doi.org/10.1063/1.115665	journal	March 1996
Free‐space electro‐optic sampling of terahertz beams Wu, Q.; Zhang, X. ‐C. Applied Physics Letters, Vol. 67, Issue 24 https://doi.org/10.1063/1.114909	journal	December 1995
Chemistry is right for T-ray imaging Nuss, M. C. IEEE Circuits and Devices Magazine, Vol. 12, Issue 2 https://doi.org/10.1109/101.485909	journal	March 1996
Detection of High Power THz Pulses by Phase Retardation in an Electro-Optic Crystal Uhd Jepsen, P.; Schall, M.; Schyja, V. Ultrafast Processes in Spectroscopy https://doi.org/10.1007/978-1-4615-5897-2_144	book	January 1996
Imaging with terahertz waves Hu, B. B.; Nuss, M. C. Optics Letters, Vol. 20, Issue 16 https://doi.org/10.1364/OL.20.001716	journal	January 1995

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Related Subjects

47 OTHER INSTRUMENTATION
54 ENVIRONMENTAL SCIENCES
ELECTRIC FIELDS
ELECTROMAGNETIC RADIATION
LASERS

Title: Electro-Optical Sensing Apparatus and Method for Characterizing Free-Space Electromagnetic Radiation

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