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  • 1
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    Improved Waveguide Laser Array (1986)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Improved structure for integrated array of AlxGa1-xAs diode lasers causes array to oscillate predominantly in fundamental supermode (with all units at same phase), thereby producing intense, narrow light beam. New structure differs from older ones in that gain in spaces between laser channels is approximately equal to gain in channels.
    Keywords: ELECTRONIC COMPONENTS AND CIRCUITS
    Type: NPO-16500 , NASA Tech Briefs (ISSN 0145-319X); 9; 4; P. 49
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    Integrated Laser and Light Detector (1985)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Proposed infrared optical transmitter tracks distant beacon and automatically point transmitted beam toward beacon. Essential transmitter is integrated gallium arsenide device containing electronically-steerable semiconductor injection laser and position detector that senses direction to beacon. With satisfactory optics and sufficient power, system used for long-distance transmission.
    Keywords: ELECTRONIC COMPONENTS AND CIRCUITS
    Type: NPO-15943 , NASA Tech Briefs (ISSN 0145-319X); 8; 4; P. 450
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Semiconductor Laser Phased Array (1985)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Oscillations synchronized and modulated individually for beam steering. Phased array of GaAs infrared lasers put out powerful electronically-steerable coherent beam. Fabricated as integrated circuit on GaAs chip, new device particularly suited to optical communications, optical data processing and optical detection and ranging systems.
    Keywords: ELECTRONIC COMPONENTS AND CIRCUITS
    Type: NPO-15963 , NASA Tech Briefs (ISSN 0145-319X); 8; 3; P. 317
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Damping Relaxation Oscillations in Laser Diodes (1985)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Proposed semiconductor laser modulated at frequencies up to near its resonant frequency more efficiently than older devices. New laser uses two different effective carrier lifetimes: one for dc and lowfrequency operation and another for operation near resonant frequency. Laser part of bipolar transistor with capacitor that serves as ac short circuit.
    Keywords: ELECTRONIC COMPONENTS AND CIRCUITS
    Type: NPO-15980 , NASA Tech Briefs (ISSN 0145-319X); 9; 1; P. 45
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Optoelectronic Integrated Circuits For Neural Networks (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Many threshold devices placed on single substrate. Integrated circuits containing optoelectronic threshold elements developed for use as planar arrays of artificial neurons in research on neural-network computers. Mounted with volume holograms recorded in photorefractive crystals serving as dense arrays of variable interconnections between neurons.
    Keywords: ELECTRONIC COMPONENTS AND CIRCUITS
    Type: NPO-17652 , NASA Tech Briefs (ISSN 0145-319X); 14; 5; P. 28
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Semiconductor Laser With Two-Dimensional Beam Steering (1986)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Modification of monolithic semiconductor injection laser capable of one-dimensional electronic beam steering enables deflection of beam in second direction. Such laser chip provides beam pointing or raster scanning for applications in optical communications, data processing, image scanning, and optical ranging.
    Keywords: ELECTRONIC COMPONENTS AND CIRCUITS
    Type: NPO-16031 , NASA Tech Briefs (ISSN 0145-319X); 10; 4; P. 37
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    Electroabsorption Infrared Modulators (1986)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Solid-state infrared modulator arrays fabricated and tested successfully. Arrays based on electro-absorption, and because of high speed inherent in small devices of this kind, expected to perform well at multigigahertz frequencies in such applications as multiplexing, demultiplexing, high-speed recording, and printing.
    Keywords: ELECTRONIC COMPONENTS AND CIRCUITS
    Type: NPO-16481 , NASA Tech Briefs (ISSN 0145-319X); 10; 5; P. 38
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
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