&lt;title&gt;Amber's uncooled microbolometer LWIR camera&lt;/title&gt;

Meyer, Bill; Cannata, Robert F.; Stout, Arthur; Gin, Andrew; Taylor, P.; Woodbury, E. J.; Deffner, John; Ennerson, Fred A.

doi:10.1117/12.243054

Cited by 18 publications

(5 citation statements)

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“…Thus large positive TCR values (the maximum is 4%/K) are observed, and from 300K to 335K, TCR values of the LBMO/STO film is over 2%/K. The TCR value of a conventional vanadium oxide bolometer is about 2%/K, (10) so that the LBMO/STO film is considered to be a candidate for an uncooled bolometer material. But for the shown at near-room temperature.…”

Section: Measurementsmentioning

confidence: 99%

“…(9) For uncooled infrared bolometer materials, TCR should be higher than 2%/K, the TCR value of a conventional VOx bolometer, in the temperature range of near room temperature. (10) (LBMO) thin films, in particular substrate-dependent electric properties. At first, the optimization of oxygen condition in the films was carried out by measurements of microstructures and the electric properties.…”

Section: Introductionmentioning

confidence: 99%

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The substrate-film lattice mismatch in La0.7Ba0.3MnO3 thin films for uncooled infrared bolometric applications

2001

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PaperThe substrate-film lattice mismatch in La0.7Ba0.3MnO3 thin films for uncooled infrared bolometric applicationsNon-member Ken-ichi Hayashi (Keio University) Non-member Eiji Ohta (Keio University) Member Hideo Wada (Japan Defense Agency) La0.7Ba0.3MnO3 (LBMO) thin films known to colossal magnetoresistance were deposited for uncooled infrared bolometers. The optimum oxygen pressure was examined in the process of the laser ablated LBMO films, and films were deposited on SrTiO3 (100), LaAlO3 (100) and MgO (100) substrates under the optimum oxygen pressure. The lattice mismatch between these substrates and LBMO films changed the surface structure of films. In X-ray diffraction and atomic force microscope, the LBMO film deposited on SrTiO3 (the LBMO/STO film) showed a high orientation for the substrate, and the grain growth of the LBMO/STO film was progressed. The temperature dependence of resistivity has a good agreement with that of LBMO bulk. In the near-room temperature, the LBMO/STO film showed a high TCR value, about 4%/K. Moreover, TCR values of the LBMO/STO film were over 2%/K from 300K to 335K. On the other hand, LBMO films deposited on LaAlO3 and MgO substrates, having large substrate-film lattice mismatches, showed a low TCR value, below 2%/K, in the near-room temperature.

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Section: Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The substrate-film lattice mismatch in La0.7Ba0.3MnO3 thin films for uncooled infrared bolometric applications

2001

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“…At present, IR FPAs utilizing microbolometers demonstrate the best NETD [36]. The only problem with these arrays is related to the bias requirement that causes (i) 1// low-frequency current noise and (ii) temperature drift of the signal offset and responsivity due to the dissipation of electrical power in array.…”

Section: Micromachined Two-color Infrared Detectors With Thermal Chomentioning

confidence: 99%

GOALI: Systems Integration of Uncooled YBaCuO IR Detectors

Butler¹,

Çelik‐Butler²

2001

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Public Reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comment regarding this burden estimates or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302, and ABSTRACT (Maximum 200 words)Infrared imaging has demonstrated itself as a vital aspect of modern weapons systems. Infrared (IR) imaging has the potential to play an equally important role in commercial applications in medicine and transportation. Automobiles equipped with infrared imaging capabilities have been envisioned for the near future. This technology has the potential to tremendously improve personal safety by enabling good vision at night and under adverse weather conditions. Infrared imagers in automobiles may also be an enabling technology for "intelligent super-highways". However, IR imaging systems currently used by the military are too costly for consumer applications. This necessitates the development of inexpensive, uncooled infrared imaging systems that possess high detectivity for night vision applications. This research investigated the integration of semiconducting YBaCuO into micromachined thermal isolation structures to produce uncooled infrared detectors. Various detector structures were developed including a self-supporting structure where the 300 to 400-nm-thick thin film YBaCuO thermometer was held above the substrate by its electrode arms producing a detector with very low thermal mass (as low as 2.3 nJ/K) while maintaining an absorption of 30%. Also dual microcavity detectors were developed for to produce a relatively flat spectral reponse over a large optical bandwidth. 14. SUBJECT TERMS Dr. Leonov is a full-time Post-Doctoral Associate working on the project, under the sponsorship of Raytheon Systems Co. As this project is a GO ALI, substantial cost-sharing is provided by Raytheon. Dr. Leonov characterized the pyroelectric detector arrays supplied by the company for their responsivity, detectivity, noise, thermal conductance and electrical impedance. Correlation between noise and thermal properties was investigated. During the last phase, Dr. Leonov is going to play a substantial role in integration of the Raytheon Systems with the devices fabricated at Southern Methodist University (SMU). Graduate StudentName: Almasri, Mahmoud Worked for more than 160 Hours: Yes Contribution to Project: Mr. Almasri is Ph.D. student fully supportedby the NSF grant. During the past reporting period, he has designed, fabricated and tested different self-supporting, planar and mesa-style YBaCuO microbolometer stuctures. Since no bridge was used in these IR detectors, the thermal mass and therefore the thermal resp...

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“…Its performances are notle. Furthermore, it is to be influenced by the environment [2]. In the mid of 1990s', the research which dealt with the semi-conducting phase of Y 1 Ba 2 Cu 3 O 7-x thin film was conducted abroad (x>0.5) [3,4].…”

Section: Introductionmentioning

confidence: 99%

The Study on the Infrared Thermal Radiation Response of Y1Ba2Cu3O7-X Semiconducting Film

2010

AMM

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Y1Ba2Cu3O7-x semiconducting thin films with different buffer have been manufactured by direct current magnetic sputtering and annealing method, and their infrared thermal radialization respond have been studied. The microstructure of Y1Ba2Cu3O7-x film is analyzed by XRD and Raman spectrum. The electronic resistance temperature coefficient value and hall effect of Y1Ba2Cu3O7-x film are measured. The results show that the uniformity of the semiconducting Y1Ba2Cu3O7-x thin film which have buffer layer is better and their Signal-to-Noise is higher. It is believed that the Y1Ba2Cu3O7-x not only have good speciality for its thermal radiation respond in infrared band but also have good performance in sub-millimeter band. It will act as new sensor elements of infrared bolometer working at room temperature.

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<title>Amber's uncooled microbolometer LWIR camera</title>

Cited by 18 publications

References 0 publications

The substrate-film lattice mismatch in La<sub>0.7</sub>Ba<sub>0.3</sub>MnO<sub>3</sub> thin films for uncooled infrared bolometric applications

The substrate-film lattice mismatch in La<sub>0.7</sub>Ba<sub>0.3</sub>MnO<sub>3</sub> thin films for uncooled infrared bolometric applications

GOALI: Systems Integration of Uncooled YBaCuO IR Detectors

The Study on the Infrared Thermal Radiation Response of Y<sub>1</sub>Ba<sub>2</sub>Cu<sub>3</sub>O<sub>7-X</sub> Semiconducting Film

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