Recent advances on CW current injection blue VCSELs

Shing Chung Wang*, Tien-chang Lu, Hao-Chung Kuo

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Scopus citations


The current injection GaN-based vertical cavity surface emitting lasers with hybrid mirrors have demonstrated the CW operation at room temperature. The laser hybrid cavity composes of a 29-pair high-reflectivity AlN/GaN bottom DBR, a 7-lamda cavity region, and a 10-pair SiO2/Ta2O5 dielectric DBR. The laser structure has utilized a thin ITO layer of 30 nm as the transparent conducting layer, combining with a thin heavily doped p-type InGaN contact layer to reduce the optical loss while maintaining good current spreading capability. The laser has typical emission wavelength around 412 nm with a threshold current of about 9.7 mA at room temperature. Further details of the laser design and performance characteristics are described.

Original languageEnglish
Title of host publicationVertical-Cavity Surface-Emitting Lasers XVI
Number of pages6
StatePublished - Jan 2012
EventVertical-Cavity Surface-Emitting Lasers XVI - San Francisco, CA, United States
Duration: 25 Jan 201226 Jan 2012

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


ConferenceVertical-Cavity Surface-Emitting Lasers XVI
CountryUnited States
CitySan Francisco, CA


  • Distributed Bragg Reflectors
  • GaN
  • vertical cavity surface emitting lasers (VCSEL)

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