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光折变全息图的热定影及H~+数密度的影响

Thermal Fixing of Photorefractive Hologram in Ce∶Fe∶LiNbO₃ and Its Relation to H⁺ Concentration

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【Author】 ZHANG Ze ming 1, XIE Jing hui 1, HE Qing sheng 2, JIN Guo fan 2, WU Min xian 2 (1 Dept. of Optical Engineering, Beijing Institute of Technology, Beijing100081, China; 2 State Key Laboratory of Precision Measurement Technology and Instru

【机构】北京理工大学光电工程系；清华大学精密测量技术与仪器国家重点实验室；清华大学精密测量技术与仪器国家重点实验室北京100081；北京100081；北京100084；北京100084；

【摘要】对 Ce∶ Fe∶ L i Nb O3晶体的体全息信息存储和热定影进行了理论和实验研究 ,从理论上分析了对不同空间频率的体全息图进行热定影所需的最小离子数密度 ,在国内首次对铌酸锂晶体中离子数密度进行了测试 ,并在不同的记录角度条件下进行了热定影实验 ,验证了理论分析的正确性更多还原

【Abstract】 Procedures of recording and thermal fixing of photorefractive holograms in the crystal Ce∶ Fe∶ LiNbO 3 are analyzed. The minimum ion concentration for thermal fixing in different recording conditions is discussed and for the first time at home a measurement method of H + concentration is proposed. The experimental results in different conditions accord well with our theoretical analysis.更多还原