The Review of Laser Engineering
Online ISSN : 1349-6603
Print ISSN : 0387-0200
ISSN-L : 0387-0200
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Volume 19, Issue 7
Displaying 1-12 of 12 articles from this issue
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  • [title in Japanese]
    Kiyotaka WASA
    1991 Volume 19 Issue 7 Pages 601-602
    Published: July 29, 1991
    Released on J-STAGE: February 26, 2010
    DOIhttps://doi.org/10.2184/lsj.19.7_601
    JOURNAL FREE ACCESS
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  • High Power Quasi-cw Laser Diode Array and System Design
    Shinji NIIKURA
    1991 Volume 19 Issue 7 Pages 603-608
    Published: July 29, 1991
    Released on J-STAGE: February 26, 2010
    DOIhttps://doi.org/10.2184/lsj.19.7_603
    JOURNAL FREE ACCESS
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    Recent developments in high power, high energy quasi-cw laser diode arrays offer system designers new opportunities for pumping solid state lasers. It is important to consider the thermal characteristics for system design. We discuss various configurations of heat removal system to understand critical parameters and to optimize system designs under various trade-offs.
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  • High Time-Resolution Spectroscopy using Diode Lasers
    Hiroki NAKATSUKA, Ryuzi YANO
    1991 Volume 19 Issue 7 Pages 609-618
    Published: July 29, 1991
    Released on J-STAGE: February 26, 2010
    DOIhttps://doi.org/10.2184/lsj.19.7_609
    JOURNAL FREE ACCESS
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    Among various types of lasers, diode lasers are the most compact and easy to control. We present a demonstration of active mode-locking of a commercially available conventional diode laser, and review some high time-resolution spectroscopy in condensed matter using diode lasers.
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  • High Energy Diode-Pumped Solid State Lasers
    Walter KOECHNER
    1991 Volume 19 Issue 7 Pages 619-626
    Published: July 29, 1991
    Released on J-STAGE: February 26, 2010
    DOIhttps://doi.org/10.2184/lsj.19.7_619
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    Very recent developments in the technology for pumping of solid-state lasers now point to a revolution in the design and application of these devices. This achievement has been brought about by the development of powerful laser diode arrays to serve as pumps for neodymium and other rare earth ions in solid-state hosts. The major benefit of diode pumping as compared to flashlamp pumped system is increased lifetime and higher efficiency. The current state-of-the-art of the design and development of high power side-pumped rod lasers is reviewed. Diode array pump sources, as well as pumping configurations and system architecture of a multi-stage Nd: YAG laser will be described. As an example, a multi-stage laser will be discussed which produced 1.25 Joules per pulse in the free lasing mode at a repetition rate of 40 Hz, 0.75J in a 17 nsec Q-switched pulse, and 0.5J per pulse at the frequency doubled wavelength of 532 nm.
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  • Fabrication of Thin-Film YBCO Josephson Junctions by Excimer Laser Irradiation
    Jian CHEN, Takashi NOZUE, Yoshiyuki KIYOSAWA, Hajime SUZUKI, Tsutomu Y ...
    1991 Volume 19 Issue 7 Pages 627-633
    Published: July 29, 1991
    Released on J-STAGE: February 26, 2010
    DOIhttps://doi.org/10.2184/lsj.19.7_627
    JOURNAL FREE ACCESS
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    Josephson junctions of high-Tc Y-Ba-Cu-O films have been successfully fabricated by ablating the films with a pulsed excimer laser. No degradation of the resistance-vs. -temperature characteristics of the films due to the laser ablation was found. The effect of radio frequency irradiation was investigaed at 77K. Clear Shapiro steps were observed under the microwave (8GHz) and millimeter-wave (94GHz) irradiation.
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  • Sensitivity Analysis of a Boundary Condition Error to Lidar Inversion Solutions
    Masao MATSUMOTO, Nobuo TAKEUCHI
    1991 Volume 19 Issue 7 Pages 634-640
    Published: July 29, 1991
    Released on J-STAGE: February 26, 2010
    DOIhttps://doi.org/10.2184/lsj.19.7_634
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    We attempted to formulate the estimation error of lidar inversion solutions (Klett and Fernald approaches) in terms of optical thickness to establish a unified error formula for the two solutions and to compare the solutions obtained by the different approaches. On the basis of the unified error formula, it is found that the error expression of the lidar inversion solution can be simplified by a “modified optical thickness” and that, in the case of overestimation of the boundary value, the error decreases more rapidly than in the case of underestimation. From the unified error formula and a numerical simulation, it can be concluded that, except for a certain case where the parameter k2 in the Klett approach is small, the estimation error by the Fernald approach is smaller than that by the Klett approach.
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  • Measurement of Si Atoms in RF Silane Plasma by Absorption Spectroscopy using a Ring Dye Laser
    Mitsuteru MUSHIGA, Masafumi SAKAKIBARA, Mineo HIRAMATSU, Toshio GOTO
    1991 Volume 19 Issue 7 Pages 641-647
    Published: July 29, 1991
    Released on J-STAGE: February 26, 2010
    DOIhttps://doi.org/10.2184/lsj.19.7_641
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    The absorption profile of the Si 288.2 nm line (3p2 1D2-3p4s 1P1) in a cw-RF SiH4 (10%) /Ar plasma generated in a plasma CVD chamber was determined by absorption spectroscopy using a ring dye laser. The Si atom density at the 3p2 1D2 level and the Si translational temperature were measured as functions of input power and total pressure in the cw-RF SiH4 (10%) /Ar plasma.
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  • CLEO'91/QELS'91 REPORT I
    Solid Satate Lasers, Ultrashort Pulse Generation, Nonlinear Wavelength Conversion
    Kunio YOSHIDA, Yuzo ISHIDA, Kouichi YAMAKAWA, Satoru YAMAGUCHI, Takato ...
    1991 Volume 19 Issue 7 Pages 648-667
    Published: July 29, 1991
    Released on J-STAGE: February 26, 2010
    DOIhttps://doi.org/10.2184/lsj.19.7_648
    JOURNAL FREE ACCESS
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  • CLEO'91/QELS'91 REPORT II
    Semiconductor Lasers, Optical Communications, O-E Devices
    Kenichi IGA, Toshihiko BABA, Hitoshi KAWAGUCHI, Setsuko MURATA, Masano ...
    1991 Volume 19 Issue 7 Pages 668-695
    Published: July 29, 1991
    Released on J-STAGE: February 26, 2010
    DOIhttps://doi.org/10.2184/lsj.19.7_668
    JOURNAL FREE ACCESS
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  • CLEO'91/QELS'91 REPORT III
    Gas Lasers, Laser Fusion, High Intensity Field Effects, Laser Spectroscopy
    Hajime NISHIOKA, Manabu TANIWAKI, Shu-ichi ASHIDATE, Tatsuki OKAMOTO, ...
    1991 Volume 19 Issue 7 Pages 696-715
    Published: July 29, 1991
    Released on J-STAGE: February 26, 2010
    DOIhttps://doi.org/10.2184/lsj.19.7_696
    JOURNAL FREE ACCESS
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  • CLEO'91/QELS'91 REPORT IV
    Laser Processing, Medical and Biological Applications
    Kou KUROSAWA, Shunichi SATO
    1991 Volume 19 Issue 7 Pages 716-725
    Published: July 29, 1991
    Released on J-STAGE: February 26, 2010
    DOIhttps://doi.org/10.2184/lsj.19.7_716
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    1991 Volume 19 Issue 7 Pages plate1
    Published: July 29, 1991
    Released on J-STAGE: February 26, 2010
    DOIhttps://doi.org/10.2184/lsj.19.7_plate1
    JOURNAL FREE ACCESS
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