TY - JOUR T1 - Quantum Dot Photodetector Based on Photonic Crystal Slab in Mid Infrared Range TT - آشکارساز نقطه کوانتومی مبتنی برتیغه بلور فوتونی برای گستره مادون قرمز میانی JF - opsi JO - opsi VL - 20 IS - 0 UR - http://opsi.ir/article-1-141-en.html Y1 - 2014 SP - 1465 EP - 1468 KW - Photodetector KW - Photonic crystal KW - FDTD KW - Quantum Dot KW - Infrared. N2 - In this paper we design InAs/GaAs QDs photodetector based on photonic crystal (PhC) slab for mid infrared (IR) range. The active layer is located in PhC cavity with resonant mode of 2.9μm. QDs dielectric function using Lorentz dispersion is inserted to Maxwell equations and then equations solved with 3 dimensional finite difference time domain method. Results show light-matter interaction at this mode and absorption spectrum for this mode with full width at half maximum of 0.87μm, increase up to 8 times compared with other wavelengths. M3 ER -