The Review of Laser Engineering

[title in Japanese]

Keizo SUZUKI

1986Volume 14Issue 5 Pages 351-352
Published: May 28, 1986
Released on J-STAGE: February 26, 2010

DOIhttps://doi.org/10.2184/lsj.14.351

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Development of an FIR Laser System for Plasma Diagnostics

Osamu SUKEGAWA, Takeshi FUKUDA, Akira NAGASHIMA

1986Volume 14Issue 5 Pages 353-363
Published: May 28, 1986
Released on J-STAGE: February 26, 2010

DOIhttps://doi.org/10.2184/lsj.14.353

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A Polymerizing Method of Gradient-Index Copolymer Thin Films Containing Barium Ion by Irradiating YAG Laser

Kaoru SUZUKI, Iwao ASAMI, Tetsuya TANIYAMA, Takaya MASUTANI

1986Volume 14Issue 5 Pages 364-369
Published: May 28, 1986
Released on J-STAGE: February 26, 2010

DOIhttps://doi.org/10.2184/lsj.14.364

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Gradient index have been made by a laser polymerization in a copolymer thin films containing barium ion using the irradiation of scanning YAG laser. The monomer of copolymer is compound acrylic acid, organic carboxylic acid containing barium ion (45 mol%) and chlorostyrene. The laser polymerized gradient index thin films (thickness: 10μm) showed a 700μm wide, gaussian shape in the gradient-index distribution, whose maximum refractive-index difference is 0.024, and length is 1 cm.

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High Power Tunable Coherent Radiation Around 126nm with an Argon Excimer Laser

Wataru SASAKI, Yoichi UEHARA, Kou KUROSAWA, Etsuo FUJIWARA, Yoshiaki K ...

1986Volume 14Issue 5 Pages 370-377
Published: May 28, 1986
Released on J-STAGE: February 26, 2010

DOIhttps://doi.org/10.2184/lsj.14.370

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Generation of intense coherent radiation with an electron beam pumped argon excimer laser is presented for various kinds of cavity mirrors, such as thin film aluminum, quartz and Si. A tunable oscillation was established in the wavelength range from 124nm to 127.5nm, and the maximum output power of 2.2MW was obtained at the line center. The spectral region is extended using stimulated Raman scattering in hydrogen molecules. The high conversion efficiency is as high as about 50% in 8atm hydrogen gas.

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Increased X-ray Emission in keV Range from Laser-Produced Plasma with Use of Prepulse

Ryosuke KODAMA, Takayasu MOCHIZUKI, Kazuo TANAKA, Chiyoe YAMANAKA

1986Volume 14Issue 5 Pages 378-380
Published: May 28, 1986
Released on J-STAGE: February 26, 2010

DOIhttps://doi.org/10.2184/lsj.14.378

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X-ray conversion efficiency at 0.53μm-wavelength laser pulse with a precurser laser pulse is investigated systematically. Enhancement of the conversion efficiency at ke V range is obtained when the prepulse laser intensity ranges from 10¹³ to 10¹⁴ W/cm². The conversion efficiency increases with prepulse laser intensity but tends to saturate above certain range. Longer pulse interval produced larger enhancement.

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[title in Japanese]

1986Volume 14Issue 5 Pages 381-390
Published: May 28, 1986
Released on J-STAGE: February 26, 2010

DOIhttps://doi.org/10.2184/lsj.14.381

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