1996 Fiscal Year Final Research Report Summary
Development of Infrared Echelle Grating
| Project/Area Number |
07554048
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 試験 |
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| Research Field |
Astronomy
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
MAIHARA Toshinori Kyoto-Univ., Department of Physics, Associate Professor, 大学院・理学研究科, 助教授 (90025445)
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| Co-Investigator(Kenkyū-buntansha) |
IWAMURO Humihide Kyoto-Univ., Department of Physics, Instructur, 大学院・理学研究科, 助手 (80281088)
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| Project Period (FY) |
1995 – 1996
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| Keywords | grating / infrared / echelle / spectrograph / spectroscopy |
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| Research Abstract |
The purpose of this developmental work is to fabricate a metal grating by a high precision mechining procedure. The specifications of the test grating have been set so that the grating could be used in the near-infrared in very high orders, as high as 30-th or more, having extremely coarse grooves. We have actually fabricated a 50*50 mm square grating by cutting a block of aluminum alloy.
We have made extensive optical and spectroscopic tests by a spectrophotometer and have compared with theoretical grating efficiency predicted by a grating simulator software, by which we have proved to possess high performance in any practical applications. The test grating developed in the present research has been incorporated into a special grating spectrometer for astronomical use, showing a satisfactory spectroscopic efficiency as well as a low scattering characteristics. In this way, the fabrication procedure of metal grating is supposed to be established at least in a reasonable size range.
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