The Review of Laser Engineering
Online ISSN : 1349-6603
Print ISSN : 0387-0200
ISSN-L : 0387-0200
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Volume 17, Issue 10
Displaying 1-7 of 7 articles from this issue
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  • [title in Japanese]
    Sadao NAKAI
    1989 Volume 17 Issue 10 Pages 678
    Published: October 28, 1989
    Released on J-STAGE: March 17, 2010
    DOIhttps://doi.org/10.2184/lsj.17.10_678
    JOURNAL FREE ACCESS
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  • Infrared and Far-Infrared Lasers for Plasma Diagnostics
    Shigeki OKAJIMA
    1989 Volume 17 Issue 10 Pages 679-694
    Published: October 28, 1989
    Released on J-STAGE: March 17, 2010
    DOIhttps://doi.org/10.2184/lsj.17.10_679
    JOURNAL FREE ACCESS
    Download PDF (1784K)
  • Diode Pumped Solid State Laser
    Takatomo SASAKI
    1989 Volume 17 Issue 10 Pages 695-705
    Published: October 28, 1989
    Released on J-STAGE: March 17, 2010
    DOIhttps://doi.org/10.2184/lsj.17.10_695
    JOURNAL FREE ACCESS
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    Laser diode pumped solid state lasers are efficient, compact, long lived, all solid state lasersources of coherent radiation. Potential applicatiosn of them include micromachining, coherent radar, medical uses, miniature visible sources for digital optical strage and various kind of sensors. The researchpoints of diode laser pumped solid state lasers are to find new solid state materials for higherefficiency, to obtain higher energy and peak power, to construct a laser with microchip size and toget green or blue and mid infrared radiation.
    The present status and future trend of the development are described.
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  • High Power Operation of Visible-Light Laser Diodes
    Genichi HATAKOSHI, Yutaka UEMATSU
    1989 Volume 17 Issue 10 Pages 706-713
    Published: October 28, 1989
    Released on J-STAGE: March 17, 2010
    DOIhttps://doi.org/10.2184/lsj.17.10_706
    JOURNAL FREE ACCESS
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    High-power InGaAlP laser diodes with a narrow-stripe and a broad-stripe structures have been investigated.Reduction in the optical power density at the cavity facet is effective for the realization ofhigh power operation for both types of lasers. A broad-stripe structure is useful for obtaining highoutput power levels exceeding 100mW. In designing such high power InGaAlP lasers, thermal effectsare very important, because InGaAlP has high thermal resistivity. The simulation analysis performedby using a self-consistent heat conduction model shows that the temperature rise in the active layeris considerably influenced by the cavity length and the cladding layer thickness, as well as heatsink/submount materials. High-power operation with output power levels exceeding 100mW wasrealized for a broad stripe InGaAlP laser with optimized structural parameters mounted on a diamondheat sink.
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  • All Solid State Copper Vapor Laser
    Hiroshi DEGUCHI, Takuya HATAKEYAMA, Etsuo FUJIWARA, Shougo SUGAWARA, E ...
    1989 Volume 17 Issue 10 Pages 714-720
    Published: October 28, 1989
    Released on J-STAGE: March 17, 2010
    DOIhttps://doi.org/10.2184/lsj.17.10_714
    JOURNAL FREE ACCESS
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    A copper vapor laser pumped with an all-solid-state switch modulator has been demonstrated forthe first time. The solid state switch modulator consists of static induction (SI) thyristors and twostage magnetic pulse compression circuits with saturable reactors. The maximum energy transferefficiency of the modulator was 67%. The modulator could work with high transfer efficiency over awide input energy range by optimization of the reset currents for saturable reactors. The averagelaser power was 21W at a 5kHz repetition rate.
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  • Detection System of the Cryogenic Target Default for Laser Fusion Experiment
    Masaki SAITO, Shinji URUSHIHARA, Kazuhiro SUZUKI, Kazuo A. TANAKA, Tat ...
    1989 Volume 17 Issue 10 Pages 721-726
    Published: October 28, 1989
    Released on J-STAGE: March 17, 2010
    DOIhttps://doi.org/10.2184/lsj.17.10_721
    JOURNAL FREE ACCESS
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    Cryogenically cooled deutrium (D2) targets have been used for laser fusion experiments. They requirevery delicate operations to control the amount of the liquid fuel (D2) in a plastic foam shell andto set the shell precisely at the focal position. If these targets should fall away before laser irradiation, intense laser beams may cause severe damages to some optical components. An automatic protectionsystem has been designed, fabricated, and tested to protect the optical components in the highpower laser system from any costly damage.
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  • [title in Japanese]
    1989 Volume 17 Issue 10 Pages plate1
    Published: October 28, 1989
    Released on J-STAGE: March 17, 2010
    DOIhttps://doi.org/10.2184/lsj.17.10_plate1
    JOURNAL FREE ACCESS
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