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Volume 13, Issue 12
Displaying 1-8 of 8 articles from this issue
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Tadao SHIMIZU1985 Volume 13 Issue 12 Pages 910-911
Published: December 28, 1985
Released on J-STAGE: February 26, 2010
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Wataru SASAKI1985 Volume 13 Issue 12 Pages 912-926
Published: December 28, 1985
Released on J-STAGE: February 26, 2010
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Takuzo SATO1985 Volume 13 Issue 12 Pages 927-938
Published: December 28, 1985
Released on J-STAGE: February 26, 2010
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Yoshiyuki KAWAMURA1985 Volume 13 Issue 12 Pages 939-947
Published: December 28, 1985
Released on J-STAGE: February 26, 2010
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Tetsuro KOBAYASHI, Akihiro MORIMOTO, Tadasi SUETA1985 Volume 13 Issue 12 Pages 948-958
Published: December 28, 1985
Released on J-STAGE: February 26, 2010
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by In-Au alloy sealing methodNobuaki IEHISA, Kuniaki FUKAYA1985 Volume 13 Issue 12 Pages 959-964
Published: December 28, 1985
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSAn In-Au alloy sealing was found to satisfy all the requirements imposed on the developing a sealed-off CO2 laser which has long life and high reliability. The sealing between different materials such as quartz, SUS303, Si and Zn Se was shown to withstand the thermal shock test, and gave the He leak rate lower than 1×10-9 atm-cc/sec both before and after the tests. The value of it could guarantee the shelf life of the laser tube for longer than 10 years. It was also proved that the transmittance characteristics of dielectric coated output couplers did not change after the sealing process. The sealed-off CO2 lasers with La1-xSrxCo O3 perovskite oxide cathodes sealed with this method turned out the operational life of 3000 hours at the power level of 50 W/m.View full abstractDownload PDF (597K) -
Keiichi TANAKA, Shoichi KAWABATA1985 Volume 13 Issue 12 Pages 965-973
Published: December 28, 1985
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSA new servo-control system is described which employs a 16-bits microcomputer for stabilizing a frequency of 633 nm He-Ne laser on one of hyperfine components of an absorption line of 127I2. The computer controls the laser to do frequency scanning, finds a specified component and stabilizes the frequency of the laser on the component. The computer controls an A/D converter to repeat sampling, which takes 16 sample values at each sampling, from the third derivative of the laser output, and processes them to find the absorption signal and to stabilize the laser.
The experiment shows that the stability of the laser is 2.4×10-10 which is evaluated by a variance of the frequency fluctuation.View full abstractDownload PDF (932K) -
1985 Volume 13 Issue 12 Pages 974-985
Published: December 28, 1985
Released on J-STAGE: February 26, 2010
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