Coherent operation of 2×2 vertical cavity laser array by resonance tuning

Bradley Thompson, Dominic F. Siriani, Kent D Choquette

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Coherently coupled vertical cavity surface emitting laser (VCSEL) arrays are of interest for high brightness operation [1], whereby multiple laser elements are coherently combined into a narrow divergence single radiation mode. 2×2 VCSEL element arrays have been pursued in the past [2, 3], but there has always been an issue with the low yield of coherently coupled arrays. Recently resonance tuning has been explored to achieve coherence in 1×2 VCSEL arrays [4]. By independent current injection into each array element, the emission wavelength of each element can be tuned due to the combined effect of the thermal and electronic dependence of the refractive index [5], enabling coherent coupling in the array [4]. This work demonstrates the next extension of resonance tuning by achieving coherent operation of an initially incoherent 2×2 array.

Original languageEnglish (US)
Title of host publication2015 IEEE Photonics Conference, IPC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages2
ISBN (Electronic)9781479974658
StatePublished - Nov 9 2015
EventIEEE Photonics Conference, IPC 2015 - Reston, United States
Duration: Aug 30 2015Aug 31 2015

Publication series

Name2015 IEEE Photonics Conference, IPC 2015


OtherIEEE Photonics Conference, IPC 2015
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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