Publications by authors named "Fang-Liang Yan"
Article Synopsis
- - The study presents a surface-emitting quantum cascade laser (QCL) utilizing second-order buried distributed feedback (DFB) and distributed Bragg reflector (DBR) gratings for enhanced feedback and light emission.
- - Experimental results show that the laser emits a single-lobe far-field radiation pattern with a narrow full width at half maximum (FWHM) of 0.18°, indicating precise control over the light output direction.
- - The DFB/DBR structure enables efficient vertical light emission with a significant surface outcoupling efficiency of 46% in continuous-wave operation and 60% in pulsed operation, achieving a single-mode emission with a notable side-mode suppression ratio of about 25 dB.
