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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Lei Liu Hongwei Qu Yun Liu Yufei Wang Aiyi Qi Xiaojie Guo Pengchao Zhao Yejin Zhang Wanhua Zheng |
| Copyright Year | 1995 |
| Abstract | High-power low-vertical-divergence laser diodes based on the longitudinal photonic band crystal (PBC) concept are investigated at a wavelength of 900 nm. The thicknesses of the layers in the longitudinal PBC waveguide are prudently optimized by mode analysis, and the lowest vertical far-field angle is found to be achieved by mode coupling. A self-consistent model is also utilized to study the device performances in detail, which shows excellent optical properties without obvious electronic performance degradation. In the experiment, continuous wave power up to 1 W/facet and vertical far-field angles of less than 10° (full-width at half-maximum) and ~50° (with 95% power content) are achieved simultaneously, with epitaxial wafer containing PBC layers of ten periods. The agreement among the design, simulation, and experiment shows a bright prospect for further reduced vertical divergence angle with high power output. |
| Sponsorship | IEEE Lasers and Electro-Optics Society |
| Starting Page | 440 |
| Ending Page | 446 |
| Page Count | 7 |
| File Size | 884704 |
| File Format | |
| ISSN | 1077260X |
| Volume Number | 21 |
| Issue Number | 1 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2015-01-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Indexes Optical waveguides Diode lasers Cavity resonators Epitaxial growth Laser beams Pump lasers beam divergence Laser beam laser diodes quantum well lasers |
| Content Type | Text |
| Resource Type | Article |
| Subject | Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering |
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