Abstract
We demonstrate antiguided coupling of two adjacent vertical-cavity surface-emitting lasers (VCSELs), obtaining a 1 × 2 phase-locked array at 869 nm. The lateral index modification required for antiguiding is achieved by a patterned 3 nm etch performed between two epitaxial growths. In contrast with prior coupled VCSELs, adjacent antiguided VCSELs can emit in phase and produce a single on-axis lobe in the far field. Greater than 2 mW of in-phase output power is demonstrated with two VCSELs separated by 8 μm. Moreover, phase locking of two VCSELs separated by 20 μm is observed, indicating the possibility of a promising class of optical circuits based upon VCSELs that interact horizontally and emit vertically.
Original language | English (US) |
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Pages (from-to) | 3754-3756 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 75 |
Issue number | 24 |
DOIs | |
State | Published - Dec 13 1999 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)