| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Outline of Final Research Achievements |
Random lasers have not been in practical use because of their low emission efficiencies. To improve the lasing efficiency, we have introduced a medium structure in which super-diffusive transport of light occurs. It is shown that introduction of spacer particles in appropriate conditions results in quasi-super-diffusive (QSD) random media. An electromagnetic simulation reveals the features of the intensity distribution inside the laser media and the spectrum of emitted light in QSD media. An increase of spectral peak intensity is observed experimentally for QSD media, indicating the possibility of improving the lasing efficiency by changing the light transport properties of random laser media.
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