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Volume 23, Issue 6
Displaying 1-7 of 7 articles from this issue
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Toru MARUYAMA1995 Volume 23 Issue 6 Pages 379
Published: June 29, 1995
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSDownload PDF (106K) -
Takeshi KOBAYASHI, Hiroshige ISHIBASHI, Hiroshi NAKATSUKA1995 Volume 23 Issue 6 Pages 380-388
Published: June 29, 1995
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSIn this article, we demonstrate a new film growth method using laser ablation. This method is tentatively named “Eclipse Method” and is characterized by placement of a shadow mask between a target and substrate. The shadow mask can capture only the traveling droplets and allow sufficient transport of growth species toward the substrate. Thus the improved smoothness of the grown film surface can be obtained. Computer simulation and comparison with the experimental results showed that the thermal ablation dominates in the oxide targets, and therefore, the droplet-formation is an unavoidable problem for the conventional method. We illustrated the role of a mass filter of the shadow mask in the new Eclipse Method by the Monte Carlo simulation.View full abstractDownload PDF (1671K) -
Eiji FUTAGAMI, Toshiaki TAKADA, Junji KAWANAKA, Shoichi KUBODERA, Wata ...1995 Volume 23 Issue 6 Pages 389-395
Published: June 29, 1995
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSWe have developed a new xenon excimer light source in vacuum ultraviolet (VUV). The use of a pulsed gas jet discharge realized efficient cluster excitation and spatially localized emission in VUV with an extremely long pulse duration. An output power of 1.5 W was obtained with a pulse width of 5 ms at 176 nm, corresponding to an efficiency of 3.0%.View full abstractDownload PDF (804K) -
Nobu KUZUU1995 Volume 23 Issue 6 Pages 396-401
Published: June 29, 1995
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSOH content dependence of the intensity of ArF-excimer-laser induced absorption in fused silica synthesized under reducing conditions was investigated. The absorption spectrum of each silica has a peak at 220 nm, and the intensity of which increases with decreasing OH content. Above the OH content about 1150 ppm, ArF-laser induced absorption was not observed. Annealing in the He ambient, suppressed the creation of a 220 nm band, and no absorption was observed in the samples containing OH of greater than 800 ppm. The annealing in the H2 ambient was not more effective as compared with He. These results indicate that, the fused silica synthesized under reducing conditions and containing OH more than about 1150 ppm was found desirable for excimer laser optics. The fused silica containing OH of more than 800 ppm annealed in the He ambient can also be used as excimer laser optics.View full abstractDownload PDF (681K) -
Masahiro TOYODA, Hideaki MUTOU, Masao TAKABE, Kenichi ARAKI, Yoshinori ...1995 Volume 23 Issue 6 Pages 402-410
Published: June 29, 1995
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSExperimental results are presented of narrow laser beam transmission from a ground station to the GMS-4 (Geostationary Meteorological Satellite-4) that has a visible channel detector. The experiment was carried out by using a highly accurate satellite optical tracking technique developed in our laboratory. By simultaniously tracking the GMS-4 based on the optical observation data prior to the laser transmission, a very narrow divergence laser beam with 95 μrad was successfuly transmitted to the satellite. Using the same technique, we succeeded in narrower divergence beam transmission with 35 μrad which is close to our destination for future space laser communication. A method of precise laser beam alignment using it's atmospheric backscattering image is also described.View full abstractDownload PDF (1376K) -
Syohji TAKASE, Kenichi YAMAMOTO, Akinori IWAKAWA, Kouji TAINAKA, Nobur ...1995 Volume 23 Issue 6 Pages 411-418
Published: June 29, 1995
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSSelective and high-efficiency wavelength conversion of the fUndamental wave of tunable, high-power alexandrite laser emission into the first Stokes emission in H2 gas is reported. Soft focussing in a long Raman cell has yielded photon conversion efficiency of as high as 80% over the entire tunable range of the fundamental wavelength. An unexpected narrow spike has been occasionally observed in the depleted pump pulse transmitted through the cell. Optimization of cell length and the shape of the depleted pump pulse with and without the narrow spike are discussed in the framework of semiclassical treatment in transient regime.View full abstractDownload PDF (977K) -
Atsushi SUNAHARA, Hiroaki NISHIMURA, Hitoki YONEDA, Sadao NAKAI1995 Volume 23 Issue 6 Pages 419-427
Published: June 29, 1995
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSThe sensitivity of soft X-ray plates, Kodak 101-05 and ILFORD Q-PLATE at 1.1 keV was measured by using a self-calibrated X-ray bolometer as a standard detector for absolute measurements of soft X-rays. Cross-calibration was also made by using an X-ray sensitive diamond detector. Good agreement in the absolute sensitivity was obtained between the bolometer and the diamond detector.View full abstractDownload PDF (1186K)
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