Abstract
We have fabricated large, two-dimensional (2D) arrays of optically pumped, phase-locked vertical cavity surface-emitting lasers that emit more than 50% of their light in a central on-axis lobe. The emission of the arrays was modified from the usual four-lobed far-field of 2D coupled arrays by incorporation of a binary phase-shift mask on the surface of the array. The array consists of Fabry-Perot resonators comprising GaAs/AlGaAs quantum wells surrounded by AlAs/AlGaAs quarterwave mirrors with a multiple order AlGaAs phase-delay layer on the top mirror stack. The phase-shift layer was etched away on alternating elements of the array. The resulting on-axis emission had an angular width of 2°for an array of approximately 100 elements.
Original language | English (US) |
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Pages (from-to) | 1484-1486 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 61 |
Issue number | 13 |
DOIs | |
State | Published - 1992 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)