Subwavelength transmission gratings and their applications in VCSELs

Stephen Y. Chou, Steve Schablitsky, Lei Zhuang

Research output: Contribution to journalConference articlepeer-review

12 Scopus citations


Birefringence, polarization, and wavelength filtering properties of subwavelength transmission gratings (SWTGs) and their applications in vertical cavity surface emitting lasers (VCSELs) are presented. Particularly, large birefringence (over two orders of magnitude larger than natural birefringence crystals) and polarization effects have been achieved in thin (240 nm thick or less) amorphous silicon subwavelength gratings (SWTGs). The SWTG polarizers were used to control the polarization of VCSELs (i.e., fixing, enhancing and switching of the polarization), making he maximum polarization of a VCSEL creased to 300:1 from 20:1. The SWTG's waveplates were used to build a polarization-switching VCSEL oscillator that has a can tunable frequency up to terahertz.

Original languageEnglish (US)
Pages (from-to)73-81
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1998
EventOptoelectronic Integrated Circuits II - San Jose, CA, United States
Duration: Jan 28 1998Jan 30 1998

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


  • Band filter
  • Birefringence
  • Electron beam lithography
  • Gratings
  • High frequency pulse
  • Lasers
  • Nanoimprint lithography
  • Polarization
  • Subwavelength


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