Low-threshold photonic-band-edge laser using iron-nail-shaped rod array

Jae Hyuck Choi, You Shin No, Min Soo Hwang, Soon Yong Kwon, Kwang Yong Jeong, Soon Hong Kwon, Jin Kyu Yang, Hong Gyu Park

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


We report the experimental demonstration of an optically pumped rod-type photonic-crystal band-edge laser. The structure consists of a 20 × 20 square lattice array of InGaAsP iron-nail-shaped rods. A single-mode lasing action is observed with a low threshold of ∼90 μW and a peak wavelength of 1451.5 nm at room temperature. Measurements of the polarization-resolved mode images and lasing wavelengths agree well with numerical simulations, which confirm that the observed lasing mode originates from the first Γ-point transverse-electric-like band-edge mode. We believe that this low-threshold band-edge laser will be useful for the practical implementation of nanolasers.

Original languageEnglish
Article number091120
JournalApplied Physics Letters
Issue number9
Publication statusPublished - 2014 Mar 3

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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