Dual-bandgap hollow-core photonic crystal fibers for third harmonic generation Academic Article uri icon


  • We present two novel hybrid photonic structures made of silica that possess two well- separated frequency bandgaps. The addition of interstitial air holes in a precise location and size allows these bandgaps to open with a ratio of∼ 3 between their central frequencies at the air line ck_z/w= 1, thus fulfilling the basic guidance condition for third harmonic generation in hollow-core fibers. In addition, these designs may serve for high-power laser delivery of two well-separated wavelengths, such as visible and near infrared.

publication date

  • January 1, 2015