Two-element phased array of antiguided vertical-cavity lasers

Darwin K. Serkland, K. D. Choquette, G. R. Hadley, K. M. Geib, A. A. Allerman

Research output: Contribution to journalArticlepeer-review


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 languageEnglish (US)
Pages (from-to)3754-3756
Number of pages3
JournalApplied Physics Letters
Issue number24
StatePublished - Dec 13 1999
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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