2013 Fiscal Year Final Research Report
Single-exposure phase-shifting digital holography using a random-complex-amplitude encoded reference wave
| Project/Area Number |
23560039
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | Wakayama University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
NUMATA Takuhisa 和歌山大学, システム工学部, 教授 (80135673)
NITANAI Eiji 和歌山大学, 産学連携・研究支援センター, 准教授 (00304189)
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| Project Period (FY) |
2011 – 2013
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| Keywords | ディジタルオプティクス / 情報フォトニクス / 位相シフト法 / 干渉計測 / ディジタルホログラフィ |
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| Research Abstract |
The improved single-exposure phase-shifting digital holography using a random-phase reference wave is proposed. The algorithm for obtaining a complex amplitude of an object wave is improved. In the proposed algorithm, the reference wave is treated as not a random-phase but a random-complex-amplitude. Therefore, the algorithm uses proper amplitude information of the reference wave. Furthermore, the appropriate reference wave in single-exposure phase-shifting digital holography using a random-complex- amplitude encoded reference wave is experimentally investigated. Although the reference wave is generalized, the quality of reconstructed images depends on it. When the reference wave satisfies a certain condition, reconstructed images cannot be obtained in this method. After the certain condition is presented, the appropriate condition is studied using a speckle property. Experimental results are given to confirm the proposed method.
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