Title :
Low threshold 2-D photonic crystal lasers
Author :
Lee, Y.-H. ; Ryu, H.Y. ; Park, H.K. ; Kim, S.H. ; Kwon, S.H.
Author_Institution :
Dept. of Phys., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea
Abstract :
Several feasible forms of low threshold 2-D slab photonic crystal lasers such as nondegenerate unit-cell lasers and band edge lasers are discussed. Through the existence of very small, very high-Q resonant modes in the square lattice, we argue the effectiveness of the photonic bandgap in photon confinement. However, the issues still needing to be solved are those of electrical pumping and surface recombination. We believe the photonic crystal will help us to find the route to the ultimate thresholdless lasers that have extremely small mode volume and high-Q values. In addition, the demonstration of the cavity-less small volume band edge laser can lead us to a new form of very small practical lasers.
Keywords :
Q-factor; laser theory; photonic band gap; photonic crystals; surface recombination; waveguide lasers; 2-D slab photonic crystal lasers; InGaAsP material system; band edge lasers; electrical pumping; high-contrast air-slab waveguide structure; low threshold 2-D photonic crystal lasers; nondegenerate unit-cell lasers; photon confinement; photonic bandgap; small mode volume; square lattice; surface recombination; thresholdless lasers; very high-Q resonant modes; Laser modes; Laser theory; Lattices; Optical waveguides; Photonic band gap; Photonic crystals; Pump lasers; Q factor; Slabs; Whispering gallery modes;
Conference_Titel :
Lasers and Electro-Optics Society, 2002. LEOS 2002. The 15th Annual Meeting of the IEEE
Print_ISBN :
0-7803-7500-9
DOI :
10.1109/LEOS.2002.1134006
