| 通过λ/2波片外腔同位相弱反馈实现激光二极管激光的强度噪声压缩 |
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| 引用本文： | 董瑞芳,张俊香,张天才,张靖,谢常德,彭堃墀. 通过λ/2波片外腔同位相弱反馈实现激光二极管激光的强度噪声压缩[J]. 物理学报, 2001, 50(3): 462-466 |
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| 作者姓名： | 董瑞芳 张俊香 张天才 张靖 谢常德 彭堃墀 |
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| 作者单位： | 山西大学光电研究所,教育部量子光学重点实验室,太原030006 |
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| 基金项目： | 国家自然科学基金(批准号:69837010);山西省自然科学基金(批准号:20001016)资助的课题. |
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| 摘 要： | 由于低温下单模半导体量子阱激光器与准直透镜出现双折射效应,导致输出光场偏振状态发生变化,使单个线偏模的光子数噪声增加.利用λ/4波片补偿双折射,同时采用λ/2波片前后表面的同位相余反射光完成对激光二极管激光器的弱反馈,在抽运电流为34.65mA时,获得压缩度为2.8dB,输出功率约24mW的光子数压缩光关键词：噪声压缩弱反馈反关联
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| 关 键 词： | 噪声压缩 弱反馈 反关联 |
| 文章编号： | 1000-3290-2001-50(03)-0462-05 |
| 收稿时间： | 2000-04-03 |
| 修稿时间： | 2000-04-03 |
INTENSITY NOISE SQUEEZING OF LASER DIODE WITH INPHASE EXTERNAL WEAK FEEDBACK BY HALF WAVE PLATE |
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| DONG RUI-FANG,ZHANG Jun-xiang,ZHANG Tian-cai,ZHANG JING XIE,CHANG-DE,PENG Kun-chi. INTENSITY NOISE SQUEEZING OF LASER DIODE WITH INPHASE EXTERNAL WEAK FEEDBACK BY HALF WAVE PLATE[J]. Acta Physica Sinica, 2001, 50(3): 462-466 |
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| Authors: | DONG RUI-FANG ZHANG Jun-xiang ZHANG Tian-cai ZHANG JING XIE CHANG-DE PENG Kun-chi |
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| Abstract: | Due to the birefringence effect of the quantum well laser and the collimating lens in a low temperature cryostat, the polarization of the output light was changed, therefore the photon number fluctuation of the output individual linearly polarized mode was increased. By compensating the birefringence with a quarter wave plate, and utilizing an inphase external weak feedback to laser diode laser by means of residuary reflection from the two surfaces of a half wave plate, we obtained the output light of 24mW with the photon number fluctuation 2.8dB below the Standard Quantum Limit at the pump current of 34.65mA. |
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| Keywords: | noise squeezing weak external feedback quantum anti-correlation |
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