Title :
Room temperature photonic crystal defect lasers at near-infrared wavelengths in InGaAsP
Author :
Painter, O.J. ; Husain, A. ; Scherer, A. ; O´Brien, J.D. ; Kim, I. ; Dapkus, P.D.
Author_Institution :
Dept. of Electr. Eng., California Inst. of Technol., Pasadena, CA, USA
fDate :
11/1/1999 12:00:00 AM
Abstract :
Room temperature lasing from optically pumped single defects in a two-dimensional (2-D) photonic bandgap (PBG) crystal is demonstrated. The high-Q optical microcavities are formed by etching a triangular array of air holes into a half-wavelength thick multiquantum-well waveguide. Defects in the 2-D photonic crystal are used to support highly localized optical modes with volumes ranging from 2 to 3 (λ/2n)3. Lithographic tuning of the air hole radius and the lattice spacing are used to match the cavity wavelength to the quantum-well gain peak, as well as to increase the cavity Q. The defect lasers were pumped with 10-30 ns pulses of 0.4-1% duty cycle. The threshold pump power was 1.5 mW (≈500 μW absorbed)
Keywords :
III-V semiconductors; Q-factor; crystal defects; etching; gallium arsenide; gallium compounds; indium compounds; laser tuning; lithography; microcavity lasers; optical fabrication; optical pumping; photonic band gap; quantum well lasers; 1.5 mW; 10 to 30 ns; 20 C; InGaAsP; air hole radius; air holes; cavity Q; cavity wavelength; defect lasers; etching; half-wavelength thick multiquantum-well waveguide; high-Q optical microcavities; highly localized optical modes; lattice spacing; lithographic tuning; near-infrared wavelength; optically pumped single defects; quantum-well gain peak; room temperature lasing; room temperature photonic crystal defect lasers; threshold pump power; triangular array; two-dimensional photonic bandgap crystal; Laser tuning; Optical arrays; Optical pumping; Optical waveguides; Photonic crystals; Pump lasers; Quantum well lasers; Temperature; Two dimensional displays; Waveguide lasers;
Journal_Title :
Lightwave Technology, Journal of
