Room-temperature light emission from an airbridge double-heterostructure microcavity of Er-doped Si photonic crystal
Yue Wang , Jun-ming An , Yuan-da Wu , Xiong-wei Hu
Optoelectronics Letters ›› : 47 -51.
Room-temperature light emission from an airbridge double-heterostructure microcavity of Er-doped Si photonic crystal
We experimentally demonstrate an efficient enhancement of luminescence from two-dimensional (2D) hexagonal photonic crystal (PC) airbridge double-heterostructure microcavity with Er-doped silicon (Si) as light emitters on siliconon-insulator (SOI) wafer at room temperature. A single sharp resonant peak at 1 529.6 nm dominates the photoluminescence (PL) spectrum with the pumping power of 12.5 mW. The obvious red shift and the degraded quality factor (Q-factor) of resonant peak appear with the pumping power increasing, and the maximum measured Q-factor of 4 905 is achieved at the pumping power of 1.5 mW. The resonant peak is observed to shift depending on the structural parameters of PC, which indicates a possible method to control the wavelength of enhanced luminescence for Si-based light emitters based on PC microcavity.
Photonic Crystal / Resonant Peak / Resonant Wavelength / Photonic Crystal Structure / Pump Power Increase
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