Near-field analysis of beam properties of InGaAs ridge lasers

W. D. Herzog*, M. S. Unlu, B. B. Goldberg, G. H. Rhodes, C. Harder

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


A high power strained (In,Ga)As graded-index separate confinement heterojunction (GRIN-SCH) laser diodes designed to pump Erbium doped fiber amplifiers was studied. A direct method for measuring the beam propagation and waveguiding properties of this laser was demonstrated. Beam waist and astigmatism measurements in the near-field and at multiple points along the optical axis outside the laser cavity by imaging the beam from the laser facet are made. In the near-field, spatial shifts in the location of the lateral position of the mode are also measured for multiple spectral features.

Original languageEnglish (US)
Pages (from-to)109-110
Number of pages2
JournalConference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS
StatePublished - Dec 1 1996
EventProceedings of the 1996 9th Annual Meeting of IEEE Lasers and Electro-Optics Society, LEOS'96. Part 1 (of 2) - Boston, MA, USA
Duration: Nov 18 1996Nov 19 1996

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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