Method for detection and imaging over a broad spectral range

Details Method for detection and imaging over a broad spectral range Method for detection and imaging over a broad spectral range

2007-09-25

2007-09-25

Porta, David (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

Superconducting type

Reexamination Certificate

active

11190784

ABSTRACT:
A method of controlling the coordinate sensitivity in a superconducting microbolometer employs localized light, heating or magnetic field effects to form normal or mixed state regions on a superconducting film and to control the spatial location. Electron beam lithography and wet chemical etching were applied as pattern transfer processes in epitaxial Y—Ba—Cu—O films. Two different sensor designs were tested: (i) a 3 millimeter long and 40 micrometer wide stripe and (ii) a 1.25 millimeters long, and 50 micron wide meandering-like structure. Scanning the laser beam along the stripe leads to physical displacement of the sensitive area, and, therefore, may be used as a basis for imaging over a broad spectral range. Forming the superconducting film as a meandering structure provides the equivalent of a two-dimensional detector array. Advantages of this approach are simplicity of detector fabrication, and simplicity of the read-out process requiring only two electrical terminals.

REFERENCES:
patent: 5538941 (1996-07-01), Findikoglu et al.
patent: 5553036 (1996-09-01), Takemura
patent: 2003/0175624 (2003-09-01), Nozaki et al.
patent: 2005/0123674 (2005-06-01), Stasiak et al.
patent: 19511982 (1996-10-01), None
J. Appl. Phys. 74 (6), 4251-63, S. Verghese et al., Sensitive Bolometers Using high Tc Superconducting Thermometers for Wavelengths 20-300 um, Sep. 1993.
J. Appl. Phys. 76, 1-24, Jul. 1, 1994, P.L. Richards, Bolometers for Infrared and Millimeter Waves.
IEEE Transactions on Applied Superconductivity, vol. 9, No. 2, Jun. 1999, M.J.M.E. DeNivelle et al., High Tc Bolometers with Silicon-Nitride Spiderweb Suspension . . . .
Physica C 329 (2000) 69-74, B. Lakew et al., High Tc Superconducting Bolometer on Chemically-Etched 7 um Thick Sapphire.
Appl. Phys. Lett. 69 (14), Sep. 30, 1996, S.J. Berkowitz, Low Noise High Temperature Superconducting Bolometers for Infrared Imaging.
IEEE Trans. Appl. Superconductivity, vol. 3, No. 1, Mar. 1993, YBa2Cu3O7 Superconductor Microbolometer Arrays Fabricated by . . . , B.R. Johnson et al.
Infrared Physics & Technology 38 (1997) 13-16, Infrared Radiation Detector Linear Arrays of High Tc Superconducting Thin Films, Z. Mai et al.
IEEE Trans. Appl. Superconductivity, vol. 7, No. 2, Jun. 1997, 2371-2373, High Tc GdBa2Cu3O7-8Superconducting Thi Film Bolometers, Li et al.
IEEE Tarns. Appl. Superconductivity, vol. 13, No. 2, Jun. 2003, 176-179, J. Delerue et al., YBCO Mid-Infrared Bolometer Arrays.
J. Appl. Phys. 68 (11), Dec. 1, 1990, 5409-5414., Grossman et al., Two-Dimensional Analysis of Microbolometer Arrays.
IEEE Trans. Appl. Superconductivity, vol. 11, No. 1, Mar. 2001, YBaCuO Mid Infrared Bolometers: Substrate Influence on Inter-Pixel Crosstalk, A. Gaugue et al.
IEEE Trans. Appl. Superconductivity, vol. 7, No. 2, Jun. 1997, Voltage-Biased High Tc Superconducting Infrared Bolometers with Strong Electrothermal Feedback, A.T.Lee et al.
Supercond. Sc. Technol. 13 (2000) 1235-1245, Recent Progress in High Temperature Superconductor Bolometric Detectors . . . A.J. Kreisler et al.

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