A low-threshold high-index-contrast grating (HCG)-based organic VCSEL

作者：Shayesteh Mohammad Reza; Darvish Ghafar^*; Ahmadi Vahid

来源：Optics and Laser Technology, 2015, 75: 173-176.

DOI：10.1016/j.optlastec.2015.06.020

• Organic semiconductor
• High-index-contrast grating (HCG)-based VCSEL
• Hybrid photonic crystal microcavity (HPC)
• Optical excitation
• Lasing threshold

We propose a low-threshold high-index-contrast grating (HCG)-based organic vertical-cavity surface-emitting laser (OVCSEL). The device has the feasibility to apply both electrical and optical excitation. The microcavity of the laser is a hybrid photonic crystal (HPC) in which the top distributed Bragg reflector (DBR) is replaced by a sub-wavelength high-contrast-grating layer, and provides a high-quality factor. The simulated quality factor of the microcavity is shown to be as high as 282,000. We also investigate the threshold behavior and the dynamics of the OVCSEL optically pumped with sub-picosecond pulses. Results from numerical simulation show that lasing threshold is 75 nJ/cm(2).

• 出版日期2015-12