The Review of Laser Engineering
Online ISSN : 1349-6603
Print ISSN : 0387-0200
ISSN-L : 0387-0200
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Volume 16, Issue 6
Displaying 1-10 of 10 articles from this issue
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  • [title in Japanese]
    Koichi INADA
    1988 Volume 16 Issue 6 Pages 290-291
    Published: June 28, 1988
    Released on J-STAGE: February 26, 2010
    DOIhttps://doi.org/10.2184/lsj.16.290
    JOURNAL FREE ACCESS
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  • A Precision Laser-Trigonometer
    Fumio MURAKAMI
    1988 Volume 16 Issue 6 Pages 292-301
    Published: June 28, 1988
    Released on J-STAGE: February 26, 2010
    DOIhttps://doi.org/10.2184/lsj.16.292
    JOURNAL FREE ACCESS
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    This paper reviews a laser-trigonometer which utilizes laser diode as a light source and lateral-effect photodiode as a position-sensing device. The principle of operation and signal processing in the instrument are described. Several application areas are outlined.
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  • Resonant Optical Pumping of CIII by XUV Radiation from a CO2 Laser Produced Plasma
    Hiroyuki KUBOMURA, Katsumi MIDORIKAWA, Hideo TASHIRO, Susumu NAMBA, Mi ...
    1988 Volume 16 Issue 6 Pages 302-309
    Published: June 28, 1988
    Released on J-STAGE: February 26, 2010
    DOIhttps://doi.org/10.2184/lsj.16.302
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    Resonant photoexcitation by XUV radiation from a CO2 laser produced plasma was investigated as a possible means to achieve laser action in the UV region. A carbon plasma containing CIII was pumped by Mn VI emission at 310.18 Åemanating from Mn plasma generated nearby. Both plasmas were produced by focused CO2 laser pulses onto solid targets. Population densities of pumped CIII ions in the upper levels, 4p1P° and 4f1F°, were estimated at 5×1011cm-3 and 4×1010cm-3, respectively. The optimum intensity of CO2 laser to obtain efficient pump radiation at 310.182Å was approximately 500 MW/cm2. These results are explained by a simple hydrodynamic model of the laser-produced manganese plasma.
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  • The Transmission Characteristics of High Power CW YAG Laser Light through Optical Fibers
    Hiroshi MIURA, Keiji OKINO
    1988 Volume 16 Issue 6 Pages 310-317
    Published: June 28, 1988
    Released on J-STAGE: February 26, 2010
    DOIhttps://doi.org/10.2184/lsj.16.310
    JOURNAL FREE ACCESS
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    The transmission characteristics of fused quartz fibers for flexible delivery of high power CW YAG laser light for material processings were examined. A novel optical system was developed and used to launch YAG laser light having a large beam divergent angles and high output power, into a small core diameter fiber. The comparison between graded index fibers and step index one's have shown that output laser beam intensity profiles are similar to the refractive index pro - files of the fiber used. Some welding experiments with these fiber systems showed that there is a remarkable welding penetration/welding bead width ratio enhancement if graded index fiber is used against step index one.
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  • Solar-Blind Effect in Ultraviolet Lidars
    Takashi SHIBATA, Tohoru NARIKIYO, Seiya ICHIMORI, Hideharu AKIYOSHI, M ...
    1988 Volume 16 Issue 6 Pages 318-327
    Published: June 28, 1988
    Released on J-STAGE: February 26, 2010
    DOIhttps://doi.org/10.2184/lsj.16.318
    JOURNAL FREE ACCESS
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    Solar-blind effect in ultraviolet lidars is investigated analytically and experimentally, evaluating the background solar radiance, the cut-off characteristics of solar-blind filters, and the wavelength dependence of Rayleigh and Mie lidars. If the quality of the solar-blind filter is good, the widest altitude range is covered with the transmission wavelength slightly shorter than the cut-off wavelength, that is 305-308 nm. Using the first and the second Stokes lines of the H2 Raman laser pumped by a Kr F laser, a compact solar-blind DIAL for ozone detection with a range of 3 km is demonstrated. In the case of large lidar station, it can be expected to construct a solar-blind ozone lidar with an altitude range of 20 km by the use of a wavelength combination of 291.6 and 308 nm.
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  • Report on CLEO88 I
    Lasers
    Sadao NAKAI, Hiroyuki DAIDO, Yoshiyuki KAWAMURA, Tadashi KANABE, Shige ...
    1988 Volume 16 Issue 6 Pages 328-336
    Published: June 28, 1988
    Released on J-STAGE: February 26, 2010
    DOIhttps://doi.org/10.2184/lsj.16.328
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  • Report on CLEO '88 II
    Laser Fusion and Laser Technologies, Industrial Applications Including Material Processing
    Sadao NAKAI, Toshitaka YAMADA, Ken ISHIKAWA
    1988 Volume 16 Issue 6 Pages 337-342
    Published: June 28, 1988
    Released on J-STAGE: February 26, 2010
    DOIhttps://doi.org/10.2184/lsj.16.337
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  • Report on CLEO'88III
    Laser Applications in Microelectronics, Optical Communications, including Fiber Optics and Sources
    Koji SUGIOKA, Koichi TOYODA, Osamu WADA
    1988 Volume 16 Issue 6 Pages 343-347
    Published: June 28, 1988
    Released on J-STAGE: February 26, 2010
    DOIhttps://doi.org/10.2184/lsj.16.343
    JOURNAL FREE ACCESS
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  • Report on CLEO'88 IV
    Ultrafast Optics and Electronics, Atmospheric, Space and Ocean Optics
    Takayoshi KOBAYASHI, Mitsuo MAEDA
    1988 Volume 16 Issue 6 Pages 348-351
    Published: June 28, 1988
    Released on J-STAGE: February 26, 2010
    DOIhttps://doi.org/10.2184/lsj.16.348
    JOURNAL FREE ACCESS
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  • Report on CLEO'88 V
    Nonlinear Optics, Optical Signal Processing, Switching and Storage Device
    Yasukazu IZAWA, Masayuki IZUTSU
    1988 Volume 16 Issue 6 Pages 352-355
    Published: June 28, 1988
    Released on J-STAGE: February 26, 2010
    DOIhttps://doi.org/10.2184/lsj.16.352
    JOURNAL FREE ACCESS
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