Development of calibration technique of image sensors toward realization of imaging power meter for high power lasers
| Project/Area Number |
24760327
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Measurement engineering
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
NUMATA TAKAYUKI 独立行政法人産業技術総合研究所, 計測標準研究部門, 主任研究員 (60420288)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | レーザ / 感度 / プロファイラ / CCD / 近赤外 / 高出力 / 光減衰器 / 均一性 / パワーメータ / CMOS / 減衰器 / パワー密度 / 校正 / ビームプロファイラ / ビーム診断 / ビームサイズ / イメージセンサ / レーザーパワー |
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| Outline of Final Research Achievements |
Responsivity evaluation technique of CCD image sensors and an optical attenuation method applicable for high power lasers were developed to realize an image sensor-based laser power meter. Investigation of pixel to pixel uniformity of responsivity of Si-CCD sensors revealed strong dependence on exposure time and laser wavelength. Proposed optical attenuator utilizing re-coupling of evanescent wave allowed attenuation of 10 W, φ3 mm laser beam down below -70 dB being easily controllable with the gap between two prisms. Incident beam profile was saved through the strong attenuation process. The attenuator and sensitivity-evaluated CCD were assembled to construct the imaging power meter and applied to laser power measurement.
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Report
(5 results)
Research Products
(11 results)
