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  • 1
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    Unknown
    Investigation of laser dynamics, modulation and control by means of intra-cavity time varying perturbation (1975)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The generation of tunable visible, infrared, and ultraviolet light is examined, along with the control of this light by means of novel mode-locking and modulation techniques. Transient mode-locking of the Nd:YAG laser and generation of short tunable pulses in the visible and the alkali metal inert gas excimer laser systems were investigated. Techniques for frequency conversion of high power and high energy laser radiation are discussed, along with high average power blue and UV laser light sources.
    Keywords: LASERS AND MASERS
    Type: NASA-CR-142018 , ML-2404 , REPT-22
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Rapid laser induced energy transfer in atomic systems (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Analytical and experimental studies of the rapid transfer of stored populations from metastable states to selected target states of a different species are reported. Both laser-induced or laser-switched collision and laser-induced two-photon spontaneous emission are described. It is shown that the laser-induced collision method is particularly useful in the visible and UV spectral regions. It has applications in photochemistry, gas-phase kinetics, and in high-power, high-energy gas-phase lasers. The anti-Stokes source is useful in the VUV and soft X-ray spectral regions.
    Keywords: LASERS AND MASERS
    Type: Radiation energy conversion in space; Conference; Jan 26, 1978 - Jan 28, 1978; Moffett Field, CA
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Studies on lasers and laser devices (1983)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The goal of this grant was to study lasers, laser devices, and uses of lasers for investigating physical phenomena are studied. The active projects included the development of a tunable, narrowband XUV light source and its application to the spectroscopy of core excited atomic states, and the development of a technique for picosecond time resolution spectroscopy of fast photophysical processes.
    Keywords: LASERS AND MASERS
    Type: NASA-CR-170173 , NAS 1.26:170173 , GL-3564
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Spontaneous Raman scattering as a high-resolution XUV radiation source (1983)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: A type of high resolution XUV radiation source is described which is based upon spontaneous anti-Stokes scattering of tunable incident laser radiation from atoms excited to metastable levels. The theory of the source is summarized and two sets of experiments using He (1s2s)(1)S atoms, produced in a CW hollow cathode and in a pulsed high power microwave discharge, are discussed. The radiation source is used to examine transitions originating from the 3p(6) shell of potassium. The observed features include four previously unreported absorption lines and several sharp interferences of closely spaced autoionizing lines. A source linewidth of about 1.9 cm(-1) at 185,000 cm(-1) is demonstrated. Previously announced in STAR as N83-18422
    Keywords: LASERS AND MASERS
    Type: AD-A140351 , IEEE Journal of Quantum Electronics (ISSN 0018-9197); QE-19; 1795-180
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Studies of laser and laser devices (1980)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The generation of tunable, infrared, and ultraviolet light, and the control of this light by mode-locking and modulation techniques are discussed. Particular emphasis is given to energy storage and extraction using atomic levels, the development of a tunable narrowband vacuum ultraviolet light source, and to the generation and applications of ultrashort optical pulses.
    Keywords: LASERS AND MASERS
    Type: NASA-CR-163144 , SU-GL-3132
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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