Monolithic integration of photodetector with vertical cavity surface emitting laser

D. Hasnain, K. Tai, Y. H. Wang, J. D. Wynn, K. D. Choquette, B. E. Weir, N. K. Dutta, A. Y. Cho

Research output: Contribution to journalArticlepeer-review


For the first time, monolithic integration of a photodetector with a vertical-cavity surface emitting laser (VCSEL) is demonstrated. We have designed and fabricated VCSELs with monolithically integrated pin photodetectors which dynamically monitor (and can thus control) the output power of the lasers. The VCSELs lase at room temperature and emit a highly coherent, low-divergence, circular beam directly from the top surface. The integrated photodetector shows a linear response to the laser emission with an effective responsivity of 0·25 A/W.

Original languageEnglish (US)
Pages (from-to)1630-1632
Number of pages3
JournalElectronics Letters
Issue number18
StatePublished - Aug 29 1991
Externally publishedYes


  • Integrated optics
  • Photodetectors
  • Semiconductor lasers

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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