Surface grating loaded VCSEL with single mode power of over 80 mW

Shanting Hu*, Ahmed Hassan, Xiaodong Gu, Masanori Nakahama, Fumio Koyama

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We demonstrate a surface grating loaded VCSEL showing high power, good beam quality and stable single mode operation. In the struc- ture, a single slow light mode propagating laterally along the long cavity of an oxide VCSEL can be selected thanks to the surface Bragg-grating. Experimental results of spectrum, L/I characteristics and beam quality with different device lengths are presented. A single mode power of over 80mW is realized with a narrow diffraction-limited divergence angle of 0:15° for a VCSEL with an oxide aperture of 4 μmμ500 μm under CW operation. A higher single mode power is expected through extending the device length with the proven scaling law.

Original languageEnglish
JournalIEICE Electronics Express
Volume18
Issue number11
DOIs
Publication statusPublished - 2021
Externally publishedYes

Keywords

  • High power
  • Single mode operation
  • Slow light
  • VCSELs

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