Abstract
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 language | English |
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Article number | 035026 |
Journal | AIP Advances |
Volume | 6 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2016 Mar |
Bibliographical note
Funding Information:J.-K. Yang acknowledges support by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (No. 2013R1A1A2074801). H.-G.P. also acknowledges support by the NRF grant funded by the MSIP (No. 2009-0081565).
Publisher Copyright:
© 2016 Author(s).
ASJC Scopus subject areas
- General Physics and Astronomy