Journal: Proceedings of SPIE

Abbreviation

Proc. SPIE Int. Soc. Opt. Eng.

Publisher

SPIE

Journal Volumes

ISSN

0277-786X

Description

Filters

Reset filters

Search Results

Publications1 - 10 of 698
  • Euclid imaging channels
    Item type: Conference Paper
    Amiaux, J.; Auguères, J.L.; Boulade, O.; et al. (2010)
    Proceedings of SPIE ~ Space telescopes and instrumentation 2010 : optical, infrared, and millimeter wave : 27 June-2 July 2010, San Diego, California, United States
  • Detection of early bladder carcinoma by fluorescence cystoscopy with Hexvix (R): Improvement of the specificity by microcystoscopy
    Item type: Conference Paper
    Lovisa, Blaise; Jichlinski, Patrice; Aymon, Daniela; et al. (2008)
    Proceedings of SPIE ~ Proceedings of SPIE: Photonic Therapeutics and Diagnostics IV
  • On-chip THz quantum cascade laser dual frequency combs
    Item type: Other Conference Item
    Scalari, Giacomo; Rösch, Markus; Villares, Gustavo F.; et al. (2017)
    Proceedings of SPIE ~ Quantum Sensing and Nano Electronics and Photonics XIV
  • Functional microimaging
    Item type: Journal Article
    Voide, R.; van Lenthe, G. Harry; Schneider, P.; et al. (2006)
    Proceedings of SPIE
  • THz optical beatnote detection with a fast hot electron bolometer operating up to 31 GHz
    Item type: Other Conference Item
    Cibella, Sara; Forrer, Andres; Beck, Mattias; et al. (2023)
    Proceedings of SPIE ~ Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVI
    We studied the performance of hot-electron bolometers (HEBs) operating at THz optical frequencies based on superconducting niobium nitride films. We report on large optical bandwidth measurement of the voltage response of the detector carried out with different THz sources. We show that the impulse response of the fully packaged HEB at 7.5 K has a 3 dB cut-off around 2 GHz, but a considerable detection capability is also observed above 30 GHz recorded in mixing mode operation by using a THz frequency comb quantum cascade laser
  • High-average power femtosecond VECSELs with tunable repetition rates up to 10 GHz
    Item type: Conference Paper
    Sieber, O. D.; Wittwer, V. J.; Hoffmann, M.; et al. (2012)
    Proceedings of SPIE
  • Epitaxial lead-chalcogenides on Si and BaF2 for mid-IR detectors and emitters including cavities
    Item type: Conference Paper
    Zogg, Hans; Arnold, Martin; Felder, Ferdinand; et al. (2008)
    Proceedings of SPIE ~ Infrared Spaceborne Remote Sensing and Instrumentation XVI
  • Conceptual phase; A design of a cryogenic shutter mechanism for the SAFARI flight instrument
    Item type: Conference Paper
    Eigenmann, Max; Wehmeier, Udo J.; Vuilleumier, Aurèle; et al. (2012)
    Proceedings of SPIE ~ Modern technologies in space- and ground-based telescopes and instrumentation II : 1-6 July 2012, Amsterdam, Netherlands
  • Optimization of a 3.6-THz Quantum Cascade Laser for Real-Time Imaging with a Microbolometer Focal Plane Array
    Item type: Conference Paper
    Behnken, Barry N.; Karunasiri, Gamani; Chamberlin, Danielle; et al. (2008)
    Proceedings of SPIE ~ Terahertz Technology and Applications
    Real-time imaging in the terahertz (THz) spectral range was achieved using a 3.6-THz quantum cascade laser (QCL) and an uncooled, 160×120 pixel microbolometer camera fitted with a picarin lens. Noise equivalent temperature difference of the camera in the 1-5 THz frequency range was calculated to be at least 3 K, confirming the need for external THz illumination when imaging in this frequency regime. After evaluating the effects of various operating parameters on laser performance, the QCL found to perform optimally at 1.9 A in pulsed mode with a 300 kHz repetition rate and 10-20% duty cycle; average output power was approximately 1 mW. Under this scheme, a series of metallic objects were imaged while wrapped in various obscurants. Single-frame and extended video recordings demonstrate strong contrast between metallic materials and those of plastic, cloth, and paper - supporting the viability of this imaging technology in security screening applications. Thermal effects arising from Joule heating of the laser were found to be the dominant issue affecting output power and image quality; these effects were mitigated by limiting laser pulse widths to 670 ns and operating the system under closed-cycle refrigeration at a temperature of 10 K.
  • Vibration control via shunted embedded piezoelectric fibers
    Item type: Conference Paper
    Belloli, Alberto; Niederberger, Dominik; Kornmann, Xavier; et al. (2004)
    Proceedings of SPIE ~ Damping and isolation
Publications1 - 10 of 698