Tuneable photonic crystal lasers and a method of fabricating the same
文献类型：专利
| 作者 | SCHERER, AXEL; PAINTER, OSKAR |
| 发表日期 | 2004-03-23 |
| 专利号 | US6711200 |
| 著作权人 | CALIFORNIA INSTITUTE OF TECHNOLOGY |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Tuneable photonic crystal lasers and a method of fabricating the same |
| 英文摘要 | Room temperature lasing from optically pumped single defect in a two-dimensional photonic bandgap crystal is illustrated. The high Q optical microcavities are formed by etching an array of air holes into a half wavelength thick multiquantum well waveguide. Defects in the two-dimensional photonic crystal or used to support highly localized optical modes with volumes ranging from 2 to 3 (lambda/2n). Lithographic tuning of the air hole radius and the lattice spacing is used to match the cavity wavelength to the quantum well gain peak, as well as to increase cavity Q. The defect lasers were pumped with 10-30 nsec pulse of 0.4-1 percent duty cycle. The threshold pump power was 1500 milliwatts. The confinement of the defect mode energy to a tiny volume and the enhancement of the spontaneous emission rate make the defect cavity an interesting device for low threshold, high spontaneous emission coupling factor lasers, and high modulation rate light emitting diodes. Optic structures formed from photonic crystals also hold promise due to the flexibility of their geometries. Lithographic methods may be employed to alter the photonic crystal geometry so as to tune device characteristics. The integration of densely packed photonic crystal waveguides, prisons, and light sources integrated on a single monolithic chip is made possible. Lithographically defined photonic crystal cavities may also find use in some material systems as an alternative to epitaxially grown mirrors, such as for long wavelengths vertical cavity surface emitting lasers (VCSEL) and GaN based devices. |
| 公开日期 | 2004-03-23 |
| 申请日期 | 2000-09-06 |
| 状态 | 授权 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/49087]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | CALIFORNIA INSTITUTE OF TECHNOLOGY |
| 推荐引用方式 GB/T 7714 | SCHERER, AXEL,PAINTER, OSKAR. Tuneable photonic crystal lasers and a method of fabricating the same. US6711200. 2004-03-23. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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