| Presentation | 1996/6/21 Controls of Polarization and Phase Distributions by Using Liquid Crystal Keiichi Sueda, Kouji Tsubakimoto, Noriaki Miyanaga, Masanori Nakatsuka, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In the direct drive laser fusion, the smoothness of the intensity pattern of each beam has been improved by the use of the random phase plate. However an intensity distribution of the whole beam in a far field region consists of speckles due to random interference. We are investigating the polarization control for the instantaneous speckle smoothing to overcome this problems. To smooth the speckles using polarization control, we need a laser beam consists of two components of which polarization direction are orthogonal to each other. We used a half wave plate array of segmented nematic liquid crystal. We have demonstrated the alignment control of liquid crystal using photoisomerization induced by polarized UV laser to fabricate the PCP with the nonrubbing method. The speckle contrast was reduced by a factor of 30%. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | ICF / polarization / nematic liquid crystal / photoisomerization / methyl orange / phase distribution |
| Paper # | EID96-14 |
| Date of Issue |
| Conference Information | |
| Committee | EID |
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| Conference Date | 1996/6/21(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Electronic Information Displays (EID) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Controls of Polarization and Phase Distributions by Using Liquid Crystal |
| Sub Title (in English) | |
| Keyword(1) | ICF |
| Keyword(2) | polarization |
| Keyword(3) | nematic liquid crystal |
| Keyword(4) | photoisomerization |
| Keyword(5) | methyl orange |
| Keyword(6) | phase distribution |
| 1st Author's Name | Keiichi Sueda |
| 1st Author's Affiliation | Institute of Laser Engineering, Osaka University() |
| 2nd Author's Name | Kouji Tsubakimoto |
| 2nd Author's Affiliation | Institute for Laser Technology |
| 3rd Author's Name | Noriaki Miyanaga |
| 3rd Author's Affiliation | Institute of Laser Engineering, Osaka University |
| 4th Author's Name | Masanori Nakatsuka |
| 4th Author's Affiliation | Institute of Laser Engineering, Osaka University |
| Date | 1996/6/21 |
| Paper # | EID96-14 |
| Volume (vol) | vol.96 |
| Number (no) | 106 |
| Page | pp.pp.- |
| #Pages | 3 |
| Date of Issue | |