Title :
Small oxide-free vertical-cavity surface-emitting lasers with high efficiency and high power
Author :
Xu Yang ; Ming Xin Li ; Guowei Zhao ; Freisem, Sabine ; Deppe, Dennis G.
Author_Institution :
Coll. of Opt. & Photonics, Univ. of Central Florida, Orlando, FL, USA
Abstract :
Data are presented showing high external differential quantum efficiency (DQE) and record-high output power in vertical-cavity surface-emitting lasers (VCSELs) with diameters below 3 μm. Good uniformity and reproducibility are achieved in devices with very small sizes. Over 75% DQEs are measured with maximum output powers of 5, 7.3, 8, 8.7 and 11.6 mW for 1, 1.5, 2, 2.5 and 3 μm diameter VCSELs, respectively.
Keywords :
surface emitting lasers; VCSEL; high external differential quantum efficiency; oxide-free vertical-cavity surface-emitting lasers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2014.3352
