Optische Nahfeldvorrichtung mit Laserquelle
文献类型：专利
| 作者 | HOPKINS LESLIE CONWELL; MURRAY CHERRY ANN; PARTOVI AFSHIN; PEALE DAVID REESE; YEH HSI-JEN JAMES; ZYDZIK GEORGE JOHN |
| 发表日期 | 1999-06-17 |
| 专利号 | DE69600964T2 |
| 著作权人 | AT & T CORP. |
| 国家 | 德国 |
| 文献子类 | 授权发明 |
| 其他题名 | Optische Nahfeldvorrichtung mit Laserquelle |
| 英文摘要 | Near-field optical apparatus (e.g, 100) according to the invention contains a novel semiconductor laser (108) photon source. The source is capable of providing substantially higher photon flux than prior art near field sources, potentially facilitating read-out rates in the megahertz range in exemplary near-field data storage and retrieval apparatus. The novel source comprises a non-uniform laser emission face (e.g., 62), with the emission face configured such that at least 50% of the total radiation emission is from a small (first) region (e.g., 66) of the emission face, of width less than lambda S/2, where lambda S is the emission wavelength of the laser. In an exemplary embodiment, a multilayer coating (64, 65) is provided on the emission face, such that radiation emission from the face is relatively low. A recess is formed in the coating such that substantial radiation emission from the recess occurs. The recess constitutes the first region. Exemplarily, the coating comprises at least one dielectric layer, with at least one conductor layer thereon. The recess extends through the conductor layer, and exemplarily is formed by FIB (focussed ion beam) etching. A variety of other embodiments are also disclosed, as are other applications of lasers according to the invention. |
| 公开日期 | 1999-06-17 |
| 申请日期 | 1996-08-28 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/47256]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | AT & T CORP. |
| 推荐引用方式 GB/T 7714 | HOPKINS LESLIE CONWELL,MURRAY CHERRY ANN,PARTOVI AFSHIN,et al. Optische Nahfeldvorrichtung mit Laserquelle. DE69600964T2. 1999-06-17. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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