Bibliographic Citation
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| Title | Achieving broad-area laser diodes with high output power and single-lobed far-field patterns in the lateral direction by loading a modal reflector |
| Creator/Author | Shigihara, Kimio ; Nagai, Yutaka ; Kakimoto, Syoichi ; Ikeda, Kenji (Mitsubishi Electric Corp., Hyogo (Japan). Optoelectronic and Microwave Devices Lab.) |
| Publication Date | 1994 Aug 01 |
| OSTI Identifier | OSTI ID: 6929085 |
| Other Number(s) | Journal ID: ISSN 0018-9197; CODEN: IEJQA7 |
| Resource Type | Journal Article |
| Resource Relation | Journal Name: IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (United States); Journal Volume: 30:8 |
| Subject | 42 ENGINEERING; SEMICONDUCTOR LASERS; OPTICAL SYSTEMS; FABRICATION; LASER CAVITIES; MATHEMATICAL MODELS; OPERATION; PERFORMANCE; USES; LASERS; SEMICONDUCTOR DEVICES; SOLID STATE LASERS |
| Description/Abstract | A modal reflector, which consists of a high-reflectivity region surrounded by low-reflectivity regions, is added to the front facet of two types of broad-area laser diodes (LD's) to control the lateral models. One type of LD is the self-aligned laser with a bent active layer (SBA LD) that has a real index-guiding mechanism. The other is a planar-stripe LD that consists of a Zn-diffused region to confine the current flow and has a gain-guiding mechanism. For the SBA LD's with a modal reflector, stable single-lobed far-field patterns (FFP's) are obtained at up to 0.3 and 0.4 W output powers in continuous wave (CW) operation and pulsed operation, respectively. In addition, for planar-stripe LD's with a modal reflector, stable single-lobed FFP's are obtained at up to 0.4 W in CW operation. The lateral modes inside the cavity are analyzed by utilizing a slit model and FFP's are calculated. Good agreement is found between experimental and calculated FFP's for a large Fresnel number. |
| Country of Publication | United States |
| Language | English |
| Format | Medium: X; Size: Pages: 1683-1690 |
| System Entry Date | 2009 Dec 17 |
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