Study on the near-field non-linearity (SMILE) of high power diode laser arrays | |
Zhang, Hongyou1,2; Jia, Yangtao3; Li, Changxuan3; Zah, Chung-En3; Liu, Xingsheng2,3; Zhang, Hongyou (zhanghy01@focuslight.com) | |
2018 | |
会议日期 | 2018-01-30 |
会议地点 | San Francisco, CA, United states |
卷号 | 10513 |
DOI | 10.1117/12.2287580 |
英文摘要 | High power laser diodes have been found a wide range of industrial, space, medical applications, characterized by high conversion efficiency, small size, light weight and a long lifetime. However, due to thermal induced stress, each emitter in a semiconductor laser bar or array is displaced along p-n junction, resulting of each emitter is not in a line, called Near-field Non-linearity. Near-field Non-linearity along laser bar (also known as "SMILE") determines the outcome of optical coupling and beam shaping [1]. The SMILE of a laser array is the main obstacle to obtain good optical coupling efficiency and beam shaping from a laser array. Larger SMILE value causes a larger divergence angle and a wider line after collimation and focusing, respectively. In this letter, we simulate two different package structures based on MCC (Micro Channel Cooler) with Indium and AuSn solders, including the distribution of normal stress and the SMILE value. According to the theoretical results, we found the distribution of normal stress on laser bar shows the largest in the middle and drops rapidly near both ends. At last, we did another experiment to prove that the SMILE value of a laser bar was mainly affected by the die bonding process, rather than the operating condition. © 2018 SPIE. |
产权排序 | 1 |
会议录 | Components and Packaging for Laser Systems IV |
会议录出版者 | SPIE |
语种 | 英语 |
ISSN号 | 0277786X |
ISBN号 | 9781510615113 |
内容类型 | 会议论文 |
源URL | [http://ir.opt.ac.cn/handle/181661/30037] |
专题 | 西安光学精密机械研究所_瞬态光学技术国家重点实验室 西安光学精密机械研究所_炬光科技有限公司 |
通讯作者 | Zhang, Hongyou (zhanghy01@focuslight.com) |
作者单位 | 1.State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shanxi; 710077, China 2.University of Chinese, Academy of Sciences, Beijing; 100049, China 3.Focuslight Technologies Inc., Xi'an, Shanxi; 710077, China |
推荐引用方式 GB/T 7714 | Zhang, Hongyou,Jia, Yangtao,Li, Changxuan,et al. Study on the near-field non-linearity (SMILE) of high power diode laser arrays[C]. 见:. San Francisco, CA, United states. 2018-01-30. |
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