2011 Fiscal Year Final Research Report
Solar-pumped fiber laser without concentrating the sunlight
| Project/Area Number |
21560045
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | Tokai University |
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Principal Investigator |
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| Project Period (FY) |
2009 – 2011
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| Keywords | レーザー / 太陽光励起レーザー / ファイバーレーザー |
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| Research Abstract |
We aim a solar-pumped laser without concentrating the sunlight. A Nd-doped glass fiber is packed in a box whose front window is dichroic, and it contains sensitizer dye solution. By irradiating a white light equivalent to a 20 times concentrated solar light, a 43dB/km of positive gain is observed. Expected gain by the natural sunlight is 2.2dB/km, and it is below the intrinsic loss of the fiber. The unexpected low gain is due to the low reflectivity of the sidewall of the box, and pump wavelength absorption of the dye solution.
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