Photonic bandedge lasers in two-dimensional square-lattice photonic crystal slabs

Soon-Hong Kwon, F.; Han-Youl Ryu; Guk-Hyun Kim, F.; Yong-Hee Lee; Sung-Bock Kim, F.
November 2003
Applied Physics Letters;11/10/2003, Vol. 83 Issue 19, p3870
Academic Journal
Square-lattice bandedge lasers are realized by room-temperature optical pumping of photonic crystal air-bridge slabs of InGaAsP quantum wells emitting at 1.5 μm. Lasing modes corresponding to the second bandedges near the X and M points are identified from their spectral positions and polarization directions. A low threshold incident pump power of less than 1 mW is achieved for the laser operating at the second bandedge near the X and M points, with only 15×15 lattice points. The measured characteristics of the bandedge lasers closely agree with the result of calculations based on the plane-wave-expansion method and the finite-difference time-domain method. © 2003 American Institute of Physics.


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