Lasing in optimized two-dimensional iron-nail-shaped rod photonic crystals

Soon Yong Kwon, Seul Ki Moon, Jae Hyuck Choi, Se Hwan Jang, Kwang Yong Jeong, Hong Gyu Park, Jin Kyu Yang

Research output: Contribution to journalArticlepeer-review


We demonstrated lasing at the Γ-point band-edge (BE) modes in optimized two-dimensional iron-nail-shaped rod photonic crystals by optical pulse pumping at room temperature. As the radius of the rod increased quadratically toward the edge of the pattern, the quality factor of the Γ-point BE mode increased up to three times, and the modal volume decreased to 56% compared with the values of the original Γ-point BE mode because of the reduction of the optical loss in the horizontal direction. Single-mode lasing from an optimized iron-nail-shaped rod array with an InGaAsP multiple quantum well embedded in the nail heads was observed at a low threshold pump power of 160 μW. Real-image-based numerical simulations showed that the lasing actions originated from the optimized Γ-point BE mode and agreed well with the measurement results, including the lasing polarization, wavelength, and near-field image.

Original languageEnglish
Article number035026
JournalAIP Advances
Issue number3
Publication statusPublished - 2016 Mar

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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