Simulation of Photonic-Crystal Surface-Emitting Lasers with Air-Hole and Air-Pillar Structures

Photonics

Gray Lin¹  Chia-Yu Kuo¹  Zi-Xian Yang¹ 

[1] Institute of Electronics, National Yang Ming Chiao Tung University, Hsinchu City 30010, Taiwan;

关键词: photonic crystals;    surface-emitting lasers;    coupled-wave theory;    band-edge modes;   

DOI  :  10.3390/photonics8060189

来源: DOAJ

【 摘 要 】

Photonic-crystal surface-emitting lasers (PC-SELs), with and without regrowth, are theoretically simplified as air-hole and air-pillar structures, respectively. In this paper, square-latticed air-hole and air-pillar PC-SELs are simulated by a three-dimensional coupled-wave theory model and the design guideline is illustrated with a PC basis of a right isosceles triangular and double circular shapes. The optimum PC filling factor is determined by infinite PC cavity analysis and the slope efficiency of finite-size PC-SEL is then calculated for the lowest threshold band-edge mode. In comparison with air-hole PC-SEL, air-pillar PC-SEL exhibits lower threshold gain, larger gain discrimination but lower slope efficiency. To achieve slope efficiency of comparable value, the cavity area of air-pillar PC-SEL is about four times larger than that of air-hole PC-SEL.

【 授权许可】

Unknown