STUDY OF THE FOUR-WAVE MIXING DIFFRACTION EFFICIENCY OFLONGITUDINAL-FIELD MULTIPLE-QUANTUM-WELLPHOTOREFRACTIVE DEVICE GROWN AT LOW TEMPERATURE

• 来源期刊: 中国物理（英文版）
• 学科: 物理学
• 关键词: multiple-quantum-well photorefractive device
• 年，卷（期）: 2001,（2）
• 所属期刊栏目: CLASSICAL AREAS OF PHENOMENOLOGY
• 页码范围: 121-123
• 页数: 3页
• 分类号: O4
• 语种: 英文

摘要

We investigate the relationship between the beam intensity and the four-wave mixing diffraction efficiency of the longitudinal-field multiple-quantum-well (LMQW) photorefractive device grown at low temperature. A optimum beam intensity is found. We also explain the different mechanisms of the beam intensity effect on the diffraction efficiency of the LMQW device and the transverse-field MQW device. Some advice on how to improve the diffraction efficiency is given.